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Air leakage accounts for 25 percent to 40 percent of the energy used for heating and cooling and also reduces the effectiveness of other energy-efficiency measures such as increased insulation and high-performance windows.
Reduced air infiltration combined with proper ventilation not only reduces energy bills but also improves the quality of your indoor air. There are a number of ways to construct a tight thermal envelope including house wraps like Tyvek or Typar and spray foam. A tighter building envelope reduces the amount of unconditioned air, drafts, noise, and moisture that enter your home. A tighter building envelope reduces the infiltration of outdoor air pollutants, dust and radon as well as eliminating paths for insect infestation. Moisture and condensation on cold surfaces inside wall cavities can lead to mold problems and structural damage. A too tight home, one that does not allow the timbers, insulation and siding to breathe is not a desirable thing. One of the principal rules of building energy efficient homes is "Build Tight, Ventilate Right." As I emphasized in my article "Building an energy-efficient home in Boise, Idaho" article, the Systems Engineering Approach to home building considers the interaction between the building site, envelope, and mechanical systems, as well as other factors, throughout the design and construction process and recognizes that features of one component in the house can greatly affect others. I definitely think that everything from large buildings to small houses need to be more energy efficient with the use of a building envelope or other such technology (ex. Chuck is a member of NAHB and its state and local chapters and chairs the local Green Building Council. Chuck is a Certified Green Professional, a Graduate Master Builder, and a Certified Graduate Builder. Pet ownership has many benefits: Picking the perfect family dogSo you have decided to add a furry friend to your family.
Homemade frugal solution to mirror and window cleaningThere are hundreds of products on the market that can and also claim they are great cleaning agents. If everyone gets involved with energy saving and whole communities start to think about the way they use electricity, heat and water, the potential to lower energy cost and cut carbon emissions is substantial. Simply making a few minor changes in your habits can be one of the most effective ways to start saving energy and you’ll soon be looking for more and more ways for yourself to save money and reduce your carbon footprint. Your first step to a more energy efficient home should be to understand how you use energy and what it costs.
A good place to start is your utility bills – you need to know how much you’re paying normally, so that you will be able to keep track of the savings once you implement your new energy saving regime. Print out these energy saving tips (see below) to get you started and view related products available from Calleja.
Typically, your appliances and home electronics are responsible for about 20 percent of your energy bills. A well-designed landscape can not only add beauty to your home but it also can reduce your cooling costs. Calleja offers a range of solutions that can help you to reduce both energy costs and your carbon footprint.
GOFAR Services, LLC - Appliance Repair Houston, TX - Chapter 4COMPRESSOR IS RUNNINGBUT REFRIGERATOR IS NOT COLDCOMPRESSOR IS RUNNING BUT REFRIGERATOR IS NOT COLDBefore you perform any of the other tests in this chapter, make sure that the compressor is running. If you look out your window but cana€™t see the masts because they are obstructed by other buildings then the power density will be mainly absorbed by those buildings and too low to worry about. If the substation is immediately next to your home there is little in a practical sense you can do to reduce the magnetic fields.
Unless the substation is immediately adjacent to your house the EMFa€™s from these small street substations fall to background levels within about 3 meters. WI-FI and DECT phones are overwhelmingly the main contributors to household electro pollution with power densities far above any nearby mobile phone mast. If your internet connection is by telephone you will need the Netgear DG834 model opposite. If your internet connection is via a cable connection you would need the Linksys wired modem opposite.
These alarms use the same technology as DECT cordless phones and will continuously pulsate microwave energy throughout the babya€™s room and beyond. Best to change your old cathode-ray monitors (the ones with the deep backs) to any type of flat screen monitor as these give of far less Electromagnetic fields than the old type which thankfully you cana€™t buy any more. In order to get your body back to its proper earth bound resonance you need to be sleeping earthed.A  Explanation of what is sleeping earthed and how you can do it is found on my website. Geobiology explores the relationship between life and the Eartha€™s physical and chemical environment. The history of geobiology in this respect dates back to 1929 when a German aristocrat Baron Gustov Von Pohl, an eminent dowser, made the extraordinary claim that cancer was caused by a€?energy linesa€™ that ran under the beds of the people that had died from the disease. Underground Streams: a€?Water will flow through any underground passage, fracture of fissure. The dark square with flashing white lines is a photographic print of microwaves radiating in the space above an underground watercourse taken in total darkness. Diagram depicts the flow of underground water and consequential chemical reactions within certain geological features that could be the origin of geopathic stress issues.
The dipolar nature of water molecules can also be part of the origin of electromagnetic fields originating from ground contained water. The electromagnetic spectrum refers to the range of different types of Electromagnetic Radiation.a€?These are usually sorted by the frequency. For visual explanation, NASA have a simple but useful diagram, and there is a far more detailed diagram available from thinkgeek (purchase required). We believe that one of the main reasons that EMFs (particularly microwave frequencies) are potentially bioactive is due to the nature of the signal itself. We have evolved with the natural levels of EMFs produced by both the sun and world around us. Power frequency (50Hz in the UK) is given off by any appliance or transmission of AC (alternating current) electrity. Childhood leukaemia has been internationally accepted as linked to powerfrequency exposure magnetic fields, with a wealth of literature finding increases in risk to this and other illnesses. It is well documented and generally accepted that over-exposure to ultraviolet rays can cause burning and skin cancer. There are internationally accepted guidelines by the International Commission for Non-Ionising Radiation Protection (ICNIRP) that have been designed to limit both residential and occupational exposure to levels that are safely below those that can heat up tissue. However, recently there has been a number of studies showing very specific biological effects far lower than these levels (see our Studies list), and as yet there is no international guidance that has taken any of these studies into effect. Powerfrequency electromagnetic fields are generated by any appliance running off AC (alternating current) power - anything plugged into a main power socket will generate them to some degree.
At the moment, health effects primarily associated with powerfrequency EMFs are due to the magnetic component - these include, but are not limited to, Childhood Leukaemia, Adult Leukaemia, Amyotrophic Lateral Sclerosis, Miscarriage, and Clinical Depression. There is a fairly brief overview of health risks and evidence in the health concerns section of the electric power transmission article on Wikipedia. The last type of geopathic disturbance that I want to talk about before we have a look at man-made electromagnetic energies concerns the earth's natural geomagnetic field (the one that makes a compass needles pointA  north).
The first geomagnetogram (G1) typically represents the values of the Earths normal geomagnetic field taken by me in a farmer's field near Poynings village not far from where I live. The second geomagnetogram (G2) was taken above a sprung mattress from a lady suffering from chronic fatigue syndrome and severe depression, and has a magnetic anomaly of 22,435.4 nT. The Cliff of Tears a€?It is important not to underestimate the value of the earth's natural geomagnetic field (DC Field) which interacts with our bodies in many positive waysA  This DC field rarely shows an anomaly above or below 2% of its normal strength which differs according to the latitude in which you live. Unnatural Alterations in the Earth's Geomagnetic Field a€?A second and equally important influence on the sequence of mitosis is the role in which the normal earth's geomagnetic field (DC field) influences the formation and production of a healthy pregnancy.
Health risks due to exposure to electromagnetic fields EMFa€™s in the home were first suggested in America by Wertheimer and Leeper, when they estimated the levels people were exposed to, using a€?wire codesa€™, and the local incidence of childhood leukaemia. Stress sensitive hormones such as prolactin and thyroxide have been found to be elevated in people at work in high electromagnetic environments.A  Prolactin plays a key role in moderating parts of the neuro-immune system and may also be an important precipitator of auto immune diseases. It has been scientifically proven for the first time, with a double blind study by means of an electrocardiogram, that the detrimental effects of a€?water veinsa€? and other geopathically disturbing phenomena can cause serious health problems to persons exposed to them. This presentation took place in March 2003 in the large auditorium of the Saint Johanns-hospital Landesklinjken SalzburgA  Germany. At locations where Geopathic stress zones are present, subsurface water plays a predominantrole, either as lakes, slowly moving underground water, or as water streams. Technical electromagnetic fields can also drastically affect the human body, as soon as certain field strengths are reached. The electromagnetic spectrum refers to the range of different types of Electromagnetic Radiation.These are usually sorted by the frequency. The Cliff of Tears It is important not to underestimate the value of the earth's natural geomagnetic field (DC Field) which interacts with our bodies in many positive waysA  This DC field rarely shows an anomaly above or below 2% of its normal strength which differs according to the latitude in which you live. An airtight building envelope contributes directly to the energy efficiency and comfort of a home. Outdoor air that leaks indoors makes it difficult to maintain comfort and energy efficiency. The vertical joints of the insulation board are tongue and groove and the horizontal joints are flashed with poly z-flashing. Properly sealing the building envelope will also reduce moisture infiltration from outdoor air in humid climates. Exterior air barriers and drainage planes prevent moisture from entering wall cavities eliminating or significantly reducing these problems.
The cost savings from using smaller HVAC equipment are used to offset the additional cost of high efficiency heating and cooling equipment. Once you realise how much energy is wasted by some appliances around the house, you’ll be in a better postion to asses where you can make a difference. These appliances and electronics include everything from washing machines and dryers, to computers. If you were already planning to landscape, these tips provide an ideal way to beautify your home while saving on your monthly energy bill. You can reduce your monthly water heating bills by selecting the appropriate water heater for your home or pool and by using some energy-efficient water heating strategies.
If it is not running, see Chapter 5.Some refrigerators are very quiet and smooth when they operate.
Or if you are addicted to cordless phones by the low energy Eco + friendly types that only emit a signal when you are using them.A  Google Siemens Gigaset Low Radiation Phones. An example of this is a digital bedside alarm clock that only need 6 volts to operate but plugged into your 240 volt ring circuit.
Click first on my a€?Studenta€™s Notesa€™ button and scroll to the end for pictures and explanation.
The term was adopted many years ago by some German dowsers, a€?geobiologistsa€™ who specialised in surveying houses for both geopathic and electromagnetic stress using both dowsing and scientific instruments.
To test his theory he persuaded the Mayor of the Bavarian town of Vilsbiburg to allow him to survey the town for such energies with his dowsing rod. As it does so it produces its own electromagnetic field often high into microwave frequency.
It has been known for a long time that when there is flowing water under a dwelling the inhabitants always feel more tired, are prone to premature aging and have a loss of vitality than those who sleep above neutral ground. As an extremely dialectic medium, water favours the formation of potential vortices, which immediately after their formation contract swiftly. Background levels of EMFs vary hugely depending on which part of the spectrum being looked for - natural light is an obvious example.
Electrical wiring creates electric and magnetic powerfrequency fields throughout houses and other wired buildings, but these levels are usually very low unless there is a wiring fault. Most areas of science can only deal in probabilities, and that becomes clearer as more scientific studies investigating health effects are produced. There is more disagreement about ill health effects from radiofrequency radiation, which is newer for most of the population, though a well-established 'microwave sickness' has been described.
As a result fortunes are spent on protective sun cream and information services as to prudent avoidance of such exposures. Molecules in the food are vibrated by high levels of microwave frequency Electromagnetic energy, causing it to heat up and subsequently cook. This, coupled with misleading statements designed to imply that there is currently no published evidence showing a link from organisations such as WHO, are the primary reasons why this topic remains in such hotly-disputed contention. ICNIRP have set guidelines for residential and occupational exposure to powerfrequency magnetic fields, based primarily on electric shock responses and induced currents, currently set at 100 microtesla (AµT) - equivalent to 1 Gauss. The evidence on these is mixed, but the link with Childhood Leukaemia is now considered to be pretty solid, with a doubling in risk at magnetic fields above 0.4 AµT (again far below the guidelines set by ICNIRP). The bottom line is that nature neverA  intended us to sleep on such a disturbed site as shown in figure G2 which has been artificially produced by the bed being placed near to a radiator ( causing the high spike to the right of the graph)A  and the springs causing the rest of the disturbed site.

As you can see the magnetic contours of this bed size area (6a€™x4a€™) are very gentle and slightly undulating showing an overall geomagnetic anomaly of 582 nT (nano Tesla). The sprung mattresses I have measured so far over the past two years have had magnetic anomalies between 4,000 and 61,000 nT. However there are instances in nature where abnormal magnetic anomalies exist usually due to a sudden change in mineralogy or geological structure over a short distance. It appears that the exposure of a dividing cell to an inhomogeneous DC magnetic field causes a physical force to be exerted on the chromosomes or on one of the other microscopic structures associated with mitosis, resulting in structural abnormalities in the chromosomes. Since that time, international research has increased year by year, and the potential health risks have been identified as cancer (especially childhood leukaemia, probably the most studied illness because of the original findings), depression, suicide, miscarriage, some forms of dementia, respiratory and immune system problems.
Research by scientists such as Ross Adey in the USA and Dr Cyril Smith here in Britain is moving the frontier of our understanding. Hubank of Vienna: a€?Speaking at a conference in England paid tribute to a group of Austrian researches composed of medical doctors, physicists and biochemists. There is clear indication that a combination of technical fields and Geopathic stress zones can multiply the effect and therefore become extremely harmful to all living beings.
Tightly sealing the house's envelope, combined with proper ventilation, can reduce energy bills and eliminate unwanted drafts and pollutants. This allows the insulation board to act as an exterior air barrier as well as a drainage plane for rain control. As a result, tight envelopes can maintain a more consistent level of comfort throughout a house.
Stan, ill bring my thermal video cam to your house and let you interpret the "crap" of air seal.
The Mayor agreed and in January that year Baron Von Pohl accompanied by the Mayor and other officials measured numerous energy lines that ran through the streets and houses of the town. This field will fluctuate depending on what is dissolved in it, how fast it is flowing or whether it is interacting with any other type of earth energy. While water running beneath a domestic dwelling should be avoided, a stream situated nearby and open to the sky will favourably discharge its negative energies harmlessly into the atmosphere. Taking its electric charge distribution in to account, turning a water molecule will result in a changed field composition.
The electric field is produced by stationary charges, and the magnetic field by moving charges (currents).
The earth's magnetic fields are static fields, unlike man-made alternating current (AC), which has no natural counterpart.
Unfortunately the studies are not always well done, and the flaws in any given study (showing an effect or otherwise) are often not reported.
Precautionary levels which will protect us from illness have not been agreed on, as some countries wish the levels to be lower than others.
If you stood in front of an operational microwave with no door your insides would slowly be cooked. The reason for these abnormally high magnetic abnormalities is a result of the bed springs intensifying the magnetic flux of these fields, made worse by the interaction of high magnetic fields around the bed and house from numerous electrical appliances, extension cables running under the bed and transformers placed near to the bed.
One instance of this is in the USA, at a place called Gyngywamp, near Croton, Connecticut knownA  as 'The Cliff of Tears' where visitors to this site very frequently become depressed, gums start to bleed and nose bleeds occur.
Messages pass between the brain, nerves and organs and even from cell to cell by electro- magnetic signalling.
In the course of several years research using classical medical methods they investigated about 1000 people for the effects of these geopathic interference zones. There were about 400 people present including numerous renowned specialists; physicians, physicists and geologists, in the all-German audience.
Also, metal ions moved by water can induce small intensity broadband electromagnetic fields (EMF). This exterior sheathing eliminates the need for building paper or housewrap thus reducing construction costs.
Baron Von Pohla€™s energy lines were then compared with the towna€™s record of houses where people had died from cancer during the last ten years, which showed a remarkable coincidence. Dr WA?rst conducted experiments in several German towns, in the rooms of cancer patients and found unusual amounts of gamma radiation in the houses he surveyed using a Geiger a€“counter. Interference with the earths natural energy field is particularly marked by the flow of these underground streams especially where two watercourses or other types of energy line cross. If thus in a pipe a hydronamic flow vortex is produced, an electric and magnetic vortex and eddy current, are the result.
Microwave frequency exposure is a relatively new phenomenon: 100 years ago the background radiation was millions of times lower than it is now, and it is as recent as the mobile phone boom (~1990's) that the modern, digitally pulsed signals have become ubiquitous in the Western world. Because of this, microwave ovens are stringently designed against leaks, and opening the door operates a safety mechanism which disables the oven, thus removing the risk to the operator. Within our evolutionary history our bodies own magnetic field has integrated with this magnetic field which is responsible for controlling amongst other things, circadian rhythms, mood changes and certain hormone production such as melatonin and serotonin.
Our forefathers sleeping on straw or feathered mattresses in houses devoid of any electrical fields or microwave energy would not have experienced such geomagnetic disturbances. Much of the research in the past 35 years into EMF health effects has concentrated on magnetic fields because they are easier to measure and it was thought they were more likely to interact with our bodiesa€™ cells. When this is interfered with by outside EMFa€™s problems begin to emerge, as the systems that control and regulate our bodies are impaired. They found that the altered electrical and magnetic field above a geographical distressed zone changed the electrical impulses passing along the nerves of the body. Well this surprised the establishment at the time, and knowing Vilsbiburg to have a high degree on cancer victims anywayA  he was asked to repeat the exercise in the City of Stetten which had a far lower incidence of cancer thus ironing out any chance factors.
StA¤ngle, who had a very good reputation of locating water bearing fissures in crystalline rock with his dowsing rod developed a stintilisation counter more sensitive and accurate than a Geiger counter and carried out a scientific survey in the French town of Moulins where a local physician, Dr, J Prichard claimed that cancer victims in the town dwelt above geological faults. In a league table of radiation associated with biological damage, the outside line of a subterranean water course would be at the very top since it is found in association with many terminal and debilitating diseases. You can't see, feel or hear electromagnetic fields, apart from visible light, which is a part of the electromagnetic spectrum. Each static magnetic field bump or sink on geomagnetogram (G2) may speed up or slow down body fluids (blood and lymphatic) in exposed areas such as the brain, heart, lung, liver, legs etc. Most scientists believe that, although EMFa€™s do not directly cause the illness in most cases, at least, living in fields above 200 nT (nano Tesla) may make a person develop the cancer or other illness, when if they didn't live in this field level, their bodies would be able to repair themselves, or cope with the daily damage from other causes in a healthier way. This wrong or confused information resulted in the dysfunction of individual organs and also explained the high number of diseases. Whilst WA?rst and StA¤ngle thought that gamma radiation from fissures could be a significant cause of cancer, more recent studies suggest that this is unlikely as gamma radiation tends to whiz straight through the body rather than causing direct hits on DNA.
Sleep time exposure to the same sharp variations of magnetic fields for years may induce some chronic health effect.
Indeed, in the town nearby, doctors and nurses are familiar with this sudden onset of illness in visitors to this old Indian sacred site. They proved a weakening in the immune system, which interacts with the wrongly programmed nervous system in persons who had been exposed. Using a randomized double blinded trial*, it has been scientifically shown that Geopathic stress zones do cause chronic stress and therefore can weaken the body's defence systems.
Finally, this stress, in combination with a possible suppression of certain functions of the immune system.
Harger, chairman of the city's medical scientific association, declared that all such a€?deadly earth currentsa€™ ran beneath the beds of all the 5,348 people who had died from cancer during the last 21 years. The culprit is thought to be the more pernicious alpha radiation from Radon which is found with high levels of gamma radiation. The World Health Organization in a health criteria report recognizes interactions between variations in static magnetic fields in cellular tissues to include an induction of electrical potentials and magneto hydrodynamic effects in the circulatory systems and by direct stimulation of nerve and muscle cells even under extremely weak thresholds.
The causation seems to be that within a few meters the geomagnetic DC field varies from 330 milligauss at an 80 degree dip to 700 milligauss at a 59 degree dip. Confirmation of these experiments continue to appear and links have been, formed with the onset of cancer, Alzheimer's Disease, Chronic Fatigue Syndrome, Miscarriages, Multiple Sclerosis (MS) and other diseases of the central nervous system. Research in this field continues with an increasing number of sophisticated environmental measuring instruments coming on the market to aid the geobiologist in identifying causative factors to illness and disease. The very high electric fields associated with high voltage overhead power lines also cause air ionization, charging toxic aerosols so that they become even more dangerous. If you are still unsure and you own an ammeter, test the current draw of the compressor at the compressor leads. To varying degrees the health consequences of staying above one of these geopathically stressed locations can be replicatedA  in our own homes by the choice of mattresses we use.A  The bottom line is, if you suspect your sleeping site is being disturbed by an unusually high magnetic anomaly then buy a bed that has a wooden base and place there upon a mattress that has no springs and make sure it is not placed near a radiator or other heavy metal object. In the 1930a€™s a French engineer Pierie Cody who lived in the sea-port of Le HavreA knew of local a€?cancer housesa€™ in the port where many people had died from cancer over the years.
This equipment known as the Genitron Felix - 3 detects ultra short and radio microwave frequencies with the ability to print them out on a [UKW- Spektrometer und Linienschreiber] This equipment is used in German universities and research institutes that confirms dowsable energy above subterranean water lines.
Effects central nervous system and the brain in the ways which effect powerful hormonal mechanisms. After checking large numbers of these dwellings, Cody concluded that the air in these a€?Cancer Housesa€™ were ionized to an unusual degree.
Important areas to be aware of are bedrooms, especially where pillows are on beds, because EMFa€™s affect an area of the brain, called the pineal gland, which works to protect the body against illness overnight.
From various other tests Cody concluded that the ionization radiation consisted of positively charged Alpha Particles.
It is also a good idea to look at places like a favourite armchair, or in front of a computer or TV. The only known source of alpha particle emission in dwellings was from a radioactive gas called Radon. It is important that places like these where you are sitting or lying still for a longish period of time should have low EMFa€™s; cells tend to cope better with external fields if the person is moving around. When you are sitting still and particular cells keep being interfered with by EMFa€™s, there is an increased risk that the damage may become unrepairable.
If the knob has an "off" setting which stops the compressor from running, it is thecold control.In the absence of an "off" setting, the easiest way to tell them apart is to pull the plastic knob off the control.
It is worthwhile taking particular precautionary action with regard to childrena€™s living environments.
The idea is to keep the compartment at a different temperature from the rest of the food compartment; a more optimum temperature for the particular food that you're keeping in these compartments. This is known as "sweating." So-called "Energy Saver" switches control small, low-wattage "mullion" heaters in the side and door panels that prevent the outside of the refrigerator from getting cool enough for sweating to occur.
Air flows over it by convection; the warm air rises and is replaced by cooler air from below. Feel for a steady flow of warm air from the drain pan side; it should be obvious (see Figure 11). It has the veryimportantjob of directing airflow beneath the fridge, assuring that the condenser fan is drawing air over the condenser and not just sucking air in through the back of the fridge.
They are sealed units and cannot be rebuilt.Replacing the condenser fan motor can be dirty and difficult. When installing a new motor with bracket mounts, it may be easier to install the brackets loosely on the motor until you can locate the mounting screws in their holes.
Thus, when trouble-shooting the evaporator fan, you must depress the door switch(es).Open your freezer door, depress all door switches and listen for the evaporator fan.
Look first for a separate access panel or a tower within the freezer that houses the fan (Figure 14). Check for anything that may be blocking the fan, including ice from a backed-up defrost drain or a frost problem. If nothing is blocking the fan and it still does not run, check for voltage across the fan motor leads (with the door switch depressed, of course.)If you have voltage across the fan motor leads, the fan motor is bad. Itcancause ice to build up in the internal ductwork.If you hear a "whistling" or "warbling" noise emanating from the fan motor itself or from the inside of the food or freezer compartment, it is probably coming from the evaporator fan motor.
They don't cost much.REPLACING THE EVAPORATOR FAN MOTORIn replacing the fan motor, you must make sure that the rotation of the new fan motor is the same as the old one. The easiest way to do this is to look for the shading poles on the old fan motor (Figure 16).If they are on opposite corners from the ones on the new fan motor core, it is a simple enough task to reverse the new rotor in its core. Do not remove the icemaker (if installed.)Look at and feel the panel covering the bottom or back of the freezer compartment. You will see a removable panel covering the entire back or bottom of your freezer compartment. Make sure the power is off the refrigerator before disassembling any lighting circuit.On some bottom-evap models, you may have to remove some of the plastic moulding around the door frame to access some of the evaporator panel screws. This can usually be accomplished by placing a pan of very hot water in various places on the panel, or by blowing warm air on it with a blow-dryer.

Therefore, when you are diagnosing a defrost problem, it's a good idea to try to avoid melting the ice encasing the terminating thermostat until you've made your diagnosis. If the thermostat opens before you've had a chance to see if the heater works, you'll have to by-pass it. There are many styles, but most are variations of the three types pictured in Figure 20.Aback-evaporatormodel is one with the evaporator mounted vertically against theinside back wallof the freezer compartment. These may be bottom freezer models, side-by-sides (Figure 17) or top freezer models (Figure 18.)Abottom-evaporatormodel is one with the evaporator mounted horizontally (flat) beneath a panel on thebottomof the freezer compartment (Figure 19). Does it have a fluffy (snowy) white consistency, or is it solid and clear-ish or slightly milky white-ish?Check the frostpattern. Or is it not frosted at all?On back-evap models, examine the drain pan directly beneath the evaporator. Is it clear, or is it filled with solid ice?Each of these symptoms indicates a different problem. If you have lots of white, snowy ice, keep reading.4-5 DEFROST SYSTEMIf the frost is snowy and white in appearance, you have a defrost problem. The three main components of the defrost system are the defrost timer, the defrost heater and the terminating thermostat.4-5(a) DEFROST TIMERS AND ADAPTIVE DEFROST CONTROLIn most older refrigerators and some newer ones, a motor-driven timer (Figure 21) is used to stop the compressor and initiate a defrost cycle. If you have a Whirlpool or Kenmore refrigerator with a flex-tray icemaker, the defrost timer is integrated into the icemaker. This is true whether you are using the icemaker to make ice or not; it is running constantly to time your defrost cycles. If you have a defrost problem and you have one of these machines, follow the instructions in section 4-6.Nowadays, refrigerators are being made as efficient as possible, due in no small part to government energy efficiency requirements. Defrost heaters use a lot of energy, so designers are mimimizing the total amount of time that the heater is energized. Such factors include ambient humidity and temperature, the water content and temperature of the food you put into the fridge, icemaking within the freezer, and how often the door is opened and closed.For example, if you go away on vacation for a week, the refrigerator door will obviously not be opened for a long time. Less humid air will enter the fridge than if someone was at home, and opening and closing the door. Frost buildup will be much slower than usual, so the refrigerator will not need to be defrosted as often as normal. It also will not need to be chilled as often, so compressor run times will be shorter and less frequent.Designers are using microprocessors (on solid state circuit boards) to adapt defrost intervals and durations to compensate for differences and changes in operating conditions.
Such techniques are calledAdaptive Defrost Control, commonly abbreviated as ADC.To make decisions about the correct defrost duration and interval, the control board must have input about the conditions that the fridge is operating under. Each manufacturer uses a different logic scheme and different inputs, such as door open time, compressor run time, duration of the previous defrost cycle, and duration and intervals of door openings.Door open info is provided to the logic board by the door switch - the same one that controls the refrigerator's internal lights.
For example, the ADC is programmed with a maximum amount of time that the heater can stay on; say, for 16 minutes. Often they are mounted under a cover plate or in a bracket that hides all but the advancement pinion.
The easiest way to recognize them is that the harness connection is always labelled with the compressor, defrost heater, L1 and L2. The easiest way to see the heater is to look for the heavy, rubber-coated wires leading to it; one on each end. The element has no protective tubing and generally wraps around beneath the evaporator in a large "U" shape.You must exercise caution when handling these heaters to prevent burning yourself. If that happens, you want to turn the heater off soon after the ice melts, to prevent the evaporator compartment from heating up too much. If theterminating thermostatsenses too high a temperature in the compartment, it opens, and cuts power to the heater. The thermostat will then stay open until the compartment again reaches a very low temperature.
In other words, it waits to reset itself until the cooling cycle starts again.If the evaporator is more heavily frosted, the ice may not all melt within the time allotted by the timer.
The heater will stay on until thetimerstops the defrost cycle, and restarts the cooling cycle.If you initiate defrost (turn the timer on) and the heaterdoes notheat up, then usually the heater or terminating thermostat is bad.
If you initiate defrost and the heaterdoesturn on, then usually the timer or ADC board is bad, and you must replace it.To diagnose which component is bad, you must initiate the defrost mode, or test continuity through the defrost heater and terminating thermostat. Within ten minutes (usually much less) you should be able to see a red glow from the defrost heater(s), which is (are) mounted beneath the evaporator.If you have an aluminum-tube heater as described in section 4-5(b), it will not glow red, but youwillsee ice melting away from its coils. Timers can get old, worn and coked up with dust, and may develop hard spots in the bearings.
If youdo nothear or see indications that the defrost heater is working, then it is necessary to investigate a little further. If you cannot tell for sure, get the information for your model fridge from your parts man. DIAGNOSIS: DEFROST HEATER AND TERMINATING THERMOSTATIf you do not hear or see indications that the defrost heater is working, you could be looking at one of several different problems. The heatermaybe so icebound that it would takehoursfor the heater to melt enough ice for you to see the heater begin to work. If they are not connected to a terminal block, you will need to cut the leads to test for continuity. Make sure you're not testing continuity across the terminating thermostat too; it may be wide open above 40 or 50 degrees. With glass-tube heaters, be careful that the glass is not cracked or broken and that you do not cut yourself. It's cheap.If you have an ammeter, try to determine if the heater is drawing any power before you melt any ice. In trying to find the heater leads, be careful that you do not melt so much ice that the terminating thermostat opens. If you suspect that the terminating thermostat might be open, temporarily bypass the terminating thermostat with an alligator jumper as described below.If you cannot find the heater leads, an alternativeis to check the current in one lead of the main power cord.
Double-check this diagnosis by jumping across (shorting) the terminating thermostat with your alligator jumpers.
If the two thermostat leads are not on a terminal block, you will have to cut the leads to jump the thermostat. Remember that it's a wet environment.LIFTING THE EVAPORATORIf you have a bottom-evap model fridge, replacing the heater will involve the delicate task of lifting the evaporator up to get to the heater.
If you break or puncture one of those tubes, you're looking at a potentially expensive sealed system repair.Thaw out the evaporator as thoroughly as is humanly possible.
Remove the evaporator mounting screws (if there are any) and gently lift up the end of the evaporator opposite the tubes. Prop up the evaporator with a blunt instrument (I use my electrical pliers or a flashlight) and change the heater.
Do what you went in there to do, but as much as possible, avoid moving the evaporator around too much.When you finish, gently lower the evaporator back into place.
The hard tray is finished in a dark gray or black color and has rotating fingers that eject the cubes from the unit; the flex-tray has a white plastic, flexible tray that inverts and twists to eject, much the same as a manual ice cube tray would work.
The hard-tray and separate defrost timer is by far the more common arrangement.This defrost system has the same components described in the defrost system in section 4-5, except that the defrost timer is integrated into the icemaker. However, the actual switch that controls the heater is accessible.Remove the icemaker and the evaporator panel as described in section 4-4. Take the plastic cover off the face of the icemaker and remove the three screws holding the metal faceplate to the icemaker head. Plug the icemaker back into its electrical socket and observe the drive motor in the upper lefthand corner of the icemaker head.
The defrost switch is the small, rectangular switch in the upper righthand corner of the icemaker head. Using electrical tape, tape it out of the way so it does not touch any other metal object in the icemaker head. Using your resistance meter, you should see continuity (and no resistance) between the empty terminal (where the BLACK lead was) and the PINK terminal.You should see NO continuity between the empty (BLACK) and ORANGE terminal.
When the switch toggle is depressed, continuity will be just the opposite: BLACK-ORANGE-CONTINUITY, BLACK-PINK-NO CONTINUITY. If the switch is okay, the problem is probably your defrost heater or terminating thermostat. Alignment of the gears is critical; follow the instructions that come with the gear sets carefully. If you replace the motor, you will have to re-align the defrost timing gear mechanism.RE-ASSEMBLYIf you have not removed the defrost timing gear housing from the back of the icemaker head or the motor from the front of the head, you will not need to re-align thedefrost timinggear mechanism. However, youwillneed to realign thedrivegear mechanism.Align the hole in the small drive gear with the alignment hole in the icemaker head and install the gear.
If they do not line up perfectly, momentarily plug the icemaker in or apply 110 volt power to the two center leads of the plug This will turn the drive motor slightly.
Lift the spring-loaded shut-off arm (ice level sensor) as you install the cam and let it rest in the cam hollow. Carefully install the metal cover plate, making sure the end of the wire shut-off arm (ice level sensor) is in its pivot hole in the metal cover plate.
Make sure the icemaker is turned on (ice level sensor arm is down) or it won't make ice.4-7 HOT GAS DEFROST PROBLEMSIf you have a refrigerator with a hot gas defrost system, the defrost mechanism is somewhat different from those described in previous sections of this book. If you suspect that you might have a hot-gas defroster but you are not sure, ask your appliance parts dealer. Most of these refrigerators were built before 1970, but not all.The main difference in a hot gas system is that there is no electrical heater or separate terminating thermostat.
The defrost cycle is controlled by a defrost timer similar to the one you'll find in electric defrost systems, but the timer controls asolenoid valveinstead of aheater.
These units have a temperature sensing bulb, similar to that found on the cold control (see section 4-9 and Figures 21 and 33) as a part of the timer. Its function is to sense the temperature of the evaporator so the defrost mechanism knows when to shut off.Troubleshooting a defrost problem in this system involves two steps.
Wait and watch your evaporator for 10-15 minutes.If the frost starts to melt, then your defrost timer has gone bad. Thoroughly melt the rest of the frost from your evaporator and replace the defrost timer.If the frost doesnotstart to melt, then your defrost solenoid is probably bad. Fortunately, the defrost solenoid is usually designed so the electrical coil can be replaced without cutting into the sealed system. Trace the Freon tubing until you find electrical wires joining the tubing at a certain point.
UNEVEN FROST PATTERNS, OR NO FROST AT ALLThe evaporator should be bitterly cold to the touch.
If the evaporator is either slightly cool or not cold at all, and your compressor is runningconstantly(not short-cycling; see section 4-9) you have a more serious problem.
The same diagnosis applies if just the first coil or two in the evaporator is (are) frosted and the rest are relatively free of ice or perhaps even lukewarm.What's happening is that the Freon is not getting compressed enough in the compressor. This could be due to two causes: either the amount of Freon in the system is low, or the compressor is worn out.
Itmayonly require recharging the Freon system, which, depending on the refrigerant used, may cost you a little, or a LOT. I have only seen one exception to this diagnosis, and this is described in section 7-2.Don't let the age of the refrigerator affect your diagnosis. Not too long ago, one of the largest appliance companies put out a series of refrigerators with compressors that were either poorly designed or poorly constructed; I never did find out which. These were their giant, 20 to 25 cubic-foot flagship models, with techno-marvelous gadgets like digital self-diagnosis and ice and water in the door, and they were built with compressors that wore out within 2 years.Fortunately, the biggest and best companies warrant their refrigerators for five years or more, so these refrigerators were still covered under warranty. COLD CONTROLIf your refrigerator is cold but not as cold as usual, and you cannot trace it to any of the other problems in this chapter, your cold control may be defective.
To test its cut-in and cut-out temperatures, you can try putting the capillary bulb in ice water and measuring the temperature with a thermometer, but it's a wet, messy, job and it's difficult to control the temperatures. The capillary tube is the liquid-filled temperature-sensing element of the cold control, and operates in the same manner as a thermometerbulb; in fact, the end of the capillary tube may have a bulb. The tube and bulbmaybe coiled right next to the cold control, or they may be led away to another part of the compartment.If you are justtesting(electrically) the cold control, you can jumper directly from one wire lead to the other. By doing this, you are closing the switch manually, and assuming the machine is not in the defrost mode, the compressor should start.If you arereplacingthe cold control, it will be necessary to trace where the capillary tube goes, and remove the whole tubewiththe cold control.

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