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PartSelect Number PS11738231
This refrigerator defrost thermostat will cut out at 55 degrees Fahrenheit and kick back in when the temperature drops to 20 degrees Fahrenheit. The thermostat itself is a little over an inch long while its extending wires are almost seven inches long.
This part works with the following brands: Whirlpool, Admiral, Estate, Inglis, Kenmore, KitchenAid, Roper, Maytag, Crosley, Jenn-Air, Hardwick, Magic Chef, Amana, Caloric & Glenwood.
This part fixes the following symptoms:
Removed timer kit (this was the second time for this part)/ replaced - this is a fairly simple job and take 5 minutes. The defrost thermostat take about 10 minutes to get to and take out the old one, replacement is a 2 minute job, unplug and replace, the longest part of this job is getting the back of the freezer off and then replaced, but it is fairly simple to do. Total time to diagnose about 15 minutes, replacement parts arrived in 2 business days, replacement time 15 - 18 minutes total. Recommend getting the thermostat and timer together. The first time this happened, only order the timer but I think the problem was the thermostat all along and the time seemed to be operating but when it came on every eight hours it tripped the circuit breaker Not sure which was really the problem, but all working fine now.
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After unplugging the appliance I needed to thaw a large ice buildup off the evaporator cover panel before I could even remove the panel. The freezer being on the lower part of the appliance has the evaporator mounted vertically and it was 100% encapsulated in rock hard ice. It took over an hour to thaw the ice and collect all the water with a shop vacuum, since the condensate pan began to overflow. One thawed, I checked all wiring for good connection, checked heater, defrost thermostat, timer unit with multimeter. The defrost thermostat checked out fine after putting it into another freezer for a 15 minute cooldown, but I noticed a crack in the seal and suspected internal moisture and decided to replace that part. A simple plug in of two leads to the new part after clipping it to the evaporator, replacement of the panel, and the appliance was up and running problem free. A workbench disection of the old part confirmed my assessment, it had internal rust and water and had failed causing the defrost cycle failure.
The refrig seemed warm so I checked the temp of some liquid with a thermometer. Readings were above 60 degrees and I knew food would spoil soon. I vacuumed the dog fur off the cooling coils underneath the machine to see if that would help. Nope. I realized cold air from the freezer was not reaching the refrig. The fan was working but no cold air was coming out. I figured a blockage either in the air duct from the refrig or in the return duct to the freezer. I didn’t see any blockage in the refrig section. I took everything out of the freezer and removed the back wall. The cooling coils were completely frozen solid with frost. Being a frost free machine, I knew there were heaters that were controlled by a timer that melted this frost away periodically and that this cycle was no longer working. I found a schematic on the web, maybe your site, and educated myself on the heater circuit. The circuit consisted of a timer, thermostat near the coils, and a cal rod heater all wired in series. The timer was easy to get to and being a mechanical device I figured it must be the culprit. I ordered one online. I checked its operation and it worked fine. Realizing time was short, I hot wired the cal rod around the thermostat and rotated the timer to its heat position. The frost melted quickly and I put the freezer back together and ordered a thermostat. I canceled the timer order. When it arrived, I installed the new thermostat and it has worked fine for the past month. A little colder than usual as I don’t yet have the settings back to where they were. I have checked the operation of the old thermostat. It’s supposed to close at 30 degrees and open at 45. I have done a continuity check on it by putting it in the freezer, letting it cool down, take it out, let it warm up and it seems to work fine. So I have doubts if I really solved the problem. Wire connections were tight and not corroded. Maybe the timer was hung up on debris that I freed by cycling it. I don’t think this is the end of the story.
I took the cover off of the evaperator in the back of the freezer compartment and thawed the ice out with a heat gun. I then replaced the bimetal defrost timer I did have to change one connection as it would not plug into the harness. I found the Defrost timer in the front of the refrigerator behind the filter cover at the bottom. Just one screw and a quick plug in and everything is working wonderfully. no more icing up
removed cover in back of freezer and observed that defrost cycle seemed to happen too often. In comparing the existing part # with the factory part, I determined that possibly the wrong part was installed previously. (it had a 6 hr cooling cycle with a 45 min defrost...spec said I should be 8 hr cool & 20 min defrost) I did research on applianceguru.com... well worth the 5 bucks! I ordered a timer & thermostat & purchased a special refrigerator brush to clean the coils on the bottom. Cleaned the coils, replaced the parts in about 15 minutes and WA-LA! the freezer started getting really cold, but the fridge wouldn't get below 55. but it FELT cold! I swapped thermometers with the freezer & found out the thermometer was faulty!!! I now have the cool control backed down to 5/7 & freezer to 6/7. temps are freeze 0 and cool 40. works better than since we bought home 5 yrs ago! research & troubleshooting took a bit of time, but by the time I ordered parts I felt very comfortable I had the right parts. All said, cost me about 40 bucks instead of probably $200 from tech... schematics from partselect.com were very helpful as well!!
1- Remove food from freezer and store in ice chest2- Turn off refrigerator3- Remove freezer drawers, 2 drawers, no fastener4- Remove freezer slide out drawer front , 2 screws5- Remove ice cube tray holder, 2 screws6- De-ice back panel with hair dryer / blower7- Remove back panel in freezer, 8 screws8- Defrost refrig coil with hair dryer / blower9- Unplug Bimetal Thermostat, 2 wires, orang / brn10- Remove Bimetal Thermostat from coil, 1 clip11- Install new Bimetal Thermostat12- Re-assemble, reverse order
Used information on internet as to how to check and repair unit. Due to high cost to have repair come to let me know it was broken, being handy with repairs, I took it upon myself to check the timer and therm, ordered the parts from this site , got them within 5 days, took about 40 minutes to use simple tools to remove and replace the timer and therm, used hair dryer to defrost coil unit and turned unit on, lit has been working well since then, about 2 weeks since repair. Saved lots on repair/labor cost and parts cost. Well satisfied, will use this product company again. I WAS AMAZED HOW EASY REPAIR WAS, WIFE HAPPY NOW!
This is easy. Remove lower vent in front of frig to change timer. Unplug and put new one in. . . . 10 Min. To change the thermostat remove food, take off back panel, defrost ice with hairdryer and locate thermostat (to the right above coil) remove old thermostat from connectors and replace with new. One connector needs to be spliced cause it does not match. No problem just use old connector and splice and seal with shrink tubing to prevent moisture from connection. In jersey repair guy charges you 100. 00 Bucks to just walk in the door. . . Forget that. Works fine
First of all let me say I can't believe I fixed it! And I can thank this website for it, they also had my part at my front door in less than 24 hours. I am so amazed! I am a stay at home Mom, and because my husband is always off with the military I knew the job was up to me to fix. And because times are tough we certainly couldn't afford a repairman. After reading many stories here about the same problem I had, I diagnosed what was wrong with my refrigerator. The defrost thermostat was faulty. First thing to do was turn off the refrig and then unplug it. I then emptied the bottom freezer, used a screwdriver to remove back panel wall. Lo and behold the coils were covered with ice. I defrosted the freezer using a blow dryer, also had to empty the drip pan in the back. when it got full of water. ANd because there is no way to remove the drip pan, I actually got a small air hose from my son's old fish tank(clean one) and then siphoned the water into a pot, took all of 10 minutes! I then used needle nose pliers to remove the bad defrost thermostat from the refrig's wiring.The defrost thermostat which had a bulge in it so knew I was on the right path. I looked at the new defrost thermostat and they had different ends on it then the one I just removed, and I remember reading what another member did, and that was to cut off the connecting caps, strip the wires , use electrical tape to join them and use a crimping tool to place the old caps on to the new defrost thermostat .I then inserted the thermostat to the freezer's wiring. Hope that makes sense to everyone. WEll, everything is running great! Thank-You Part Select, you saved me lots of money!
Removed the cover to the timer, 2 nut screws. Easy. Then emptied freezer, and took off back plate with nut driver. Replaced thermostat. 2 wire plugs that were easy to complete. Left back off, let thermostat normalize temperature, then switched to defrost setting. Worked like a charm.
I removed the back cover in the freezer section by removing six screws. The entire coil, the thermostat and the lines were all iced over. I used a hairdryer to defrost everything. I removed the thermostat by uncoupling the connectors and unclipping it from the coil tubing. I found the thermostat was bulging and deformed. I jumped out the thermostat using an insulated clip lead. I taped it so it would not short to anything. I plugged the unit in, turned the unit to "1" and advanced the defrost timer to defrost. I could hear the water hissing on the coil. I ordered the thermostat. It arrived in 3 days. The new one had a different terminal. I cut off the matching one from the old part and used a scotch-lok to make the connection to the new part. I slapped it in, dressed the wires and replaced the cover. I noticed that when I advanced the timer after replacing the thermostat, it did not immediately come on. The thermostat has an operating temperature window. I checked it several days later and found no frost. Everything works great.
I have a side by side Amana fridge about 12 years old. One day I noticed everything was not cold anymore. I checked the temp with my infrared thermometer and it was about 70 in the top of the fridge, 40-50 in the bottom, and freezer was the same! So after pulling out the two baskets in the bottom of the freezer and the side rails that hold the baskets, I used a 1/4 nut driver to remove the back lower panel. After looking at the electrical schematic on the back of the fridge, I jumpered around the defrost thermostat, a little cylinder with two wires coming out of it. Bingo, the fan turned on. Well after a few days of running fine with it jumpered my new one arrived. I never really tested my old one with a meter so I did that and it tested fine, so I plugged the old one back in and it worked fine for a few days. Then one day I noticed that fan wasn't running again so I just put the new one in. I had to cut one of the connectors off as it was female instead of male and crimp cap it together, but besides that it went fine. So after connecting it I noticed the fan motor was buzzing but not spinning. I wiggled wires around and determined the connector going into the fan motor had to be a certain way to make the connection. I unplugged it, it wasn't corroded or anything but if pulled down on, it would not make connection. So pulling up on the connector proved that it would make good connection, so a ziptie keeping the wires tight in the up direction proved to be the solution. I'm pretty sure my old defrost thermostat was not the problem. So that's my story. Hope it helped.
remove ice maker vent and back piece. Unclip defrost thermostat and unplug. Plug new thermostat in and clip to element, reattach back piece, vent and ice maker. Is a tight fit getting icemaker out, there are 3 screws 2 on top and one on bottom.
for timer-removed front base cover, removed timer from mount plate- r2 timer-reattached plug- installed front base cover. for defrost thermostat- remove all trays and slide mounts-removed back metal cover- remove thermostat and unplug wires. Cut three inch section of brown wire with terminal from old thermostat and replace on new thermostat using an in line splice. reassemble
unplug refrigerator,remove content [shelves] then remove panel screws,slide thermostat from tube and unplug both wire ends,match up both thermostat[old unit have male round connector] you'll need round connector.cut old unit wire off,cut new unit wire,strip both ends join with solder and cover with heat-shrink and reinstall,fridge is cooling now.
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