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Evap fans not running after power loss and restart

The evaporator fans didnt run upon restart after a loss of power. Now the system runs at about 1 psi suction and 160 lbs head afetr i wired the fans hot all the time. Any help?

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It sounds like you could be stuck on a defrost cycle? The system is in a pump down cycle, check solenoid valve is off but compressor is not cutting on pressure switch.

Posted on Mar 05, 2009

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Refrigerator not cooling.


No the evaporator fan not running has nothing to do with the compressor. I would suspect that you are freezing up over the evaporator because the fan is not running and when it ices up the air can not flow through properly therefore causing the refrigerator side to get warmer. Replace the fan and you should be fine. Take the back panel inside the freezer off and see if you are all iced up. If you bare then I would replace the fan . You also said the defrost heater did not come on. That will also cause a freeze up. Possible replacement of the defrost heater may be needed. Good Luck!

Jul 25, 2015 | Amana Refrigerators

1 Answer

Freezing up


The first thing you want to do is open the freezer and see if the fan inside there is running. The reason is the freezer cools the refrigerator side by circulating air from the freezer. If the fan is running then your problem is one or more parts of the defrost system is malfunctioned and in return your problem arises. There are three parts to the system, the defrost timer or in some cases control board, defrost thermostat also known as a bi-metal, and the defrost heater. The defrost system is set up to operate as so. The defrost timer or control board will turn the machine off, in some cases every 8 hours, some 12. During this time period the defrost heaters, located behind the freezer wall and rest underneath the evaporator, yet wires to them run up the side of it, are energized and emit heat that raises upward to melt the ice that has formed on the evaporator coils. The bi-metal or defrost thermostat is at the top of the evaporator. When the heat from the heater starts to reach the bi-metal, it breaks the circuit turning the heater off. The whole purpose of this is because the freezer cool the refridgerator side by drawing air across the coils and blowing to the other side via the evap fan motor. In my opinion, if you change one part of the defrost system change them all because usually when one part fails another will follow, so save yourself the time and the food loss, the cost difference is minute.

Jun 21, 2012 | Kenmore Refrigerators

1 Answer

Evaporator is iced up


The first thing you want to do is open the freezer and see if the fan inside there is running. The reason is the freezer cools the refrigerator side by circulating air from the freezer. If the fan is running then your problem is one or more parts of the defrost system is malfunctioned and in return your problem arises. There are three parts to the system, the defrost timer or in some cases control board, defrost thermostat also known as a bi-metal, and the defrost heater. The defrost system is set up to operate as so. The defrost timer or control board will turn the machine off, in some cases every 8 hours, some 12. During this time period the defrost heaters, located behind the freezer wall and rest underneath the evaporator, yet wires to them run up the side of it, are energized and emit heat that raises upward to melt the ice that has formed on the evaporator coils. The bi-metal or defrost thermostat is at the top of the evaporator. When the heat from the heater starts to reach the bi-metal, it breaks the circuit turning the heater off. The whole purpose of this is because the freezer cool the refridgerator side by drawing air across the coils and blowing to the other side via the evap fan motor. In my opinion, if you change one part of the defrost system change them all because usually when one part fails another will follow, so save yourself the time and the food loss, the cost difference is minute.

May 27, 2012 | Whirlpool Refrigerators

1 Answer

Refrigerator not cold


The first thing you want to do is open the freezer and see if the fan inside there is running. The reason is the freezer cools the refrigerator side by circulating air from the freezer. If the fan is running then your problem is one or more parts of the defrost system is malfunctioned and in return your problem arises. There are three parts to the system, the defrost timer or in some cases control board, defrost thermostat also known as a bi-metal, and the defrost heater. The defrost system is set up to operate as so. The defrost timer or control board will turn the machine off, in some cases every 8 hours, some 12. During this time period the defrost heaters, located behind the freezer wall and rest underneath the evaporator, yet wires to them run up the side of it, are energized and emit heat that raises upward to melt the ice that has formed on the evaporator coils. The bi-metal or defrost thermostat is at the top of the evaporator. When the heat from the heater starts to reach the bi-metal, it breaks the circuit turning the heater off. The whole purpose of this is because the freezer cool the refridgerator side by drawing air across the coils and blowing to the other side via the evap fan motor. In my opinion, if you change one part of the defrost system change them all because usually when one part fails another will follow, so save yourself the time and the food loss, the cost difference is minute.

May 18, 2012 | Frigidaire Refrigerators

1 Answer

Voltage to evap fan 94v not working runs slow @ 120v


Hi, I deal with evaporator motors on a day to day basis.If the motor is running but not up to full speed, the inner windings of the motor are going out. If the motor runs as you say, is it getting only 94 volts to it? If this is the case, check the incoming voltage to the unit itself. Check to see on the schematics what is between the motor where you may be loosing your voltage. Defrost thermostat, or timer. Check power to the timer first and get back to me. The defrost thermostat supplies power to the fan when the evaporator temperature gets cold enough and the contacts will close and send power to one side of the motor. If it is going bad, it will cause you to loose part or all of the voltage. If you have a meter, check this. It is round and sealed with 2 terminals on it. If it is cold enough, you can check the leads to ground and see if you are getting less then 120 volts coming out the motor side. If so, replace the thermostat. Please keep me posted.
Sincerely,
Shastalaker7
PS Be safe around electricity. Also, this defrost stat snaps around a evap. line.

Dec 28, 2009 | Amana Refrigerators

2 Answers

Refrigerator has a clicking sound and does not run


Replace the motherboard (part # WR55X10942) but be careful to check that the evaporator fan (inside the freezer) turns on when you power up the refrig again. A bad evaporator fan motor can take out the motherboard. If compressor starts with new board but not evap fan, unplug immeadiatelly and replace the evap fan motor to save new board.

Sep 11, 2009 | Refrigerators

1 Answer

New evaporator fan not running smoothly


Great ! ! Usually the main control board is the problem , when the evap fan doesn't run .

Sep 07, 2009 | GE (PSS26MSRSS) Side by Side Refrigerator

1 Answer

Compressor & Evap. Fan both work for 12 hours then evap stops


I believe that because defrost is done by the mother control board this is why this is happening the part of the board that controls defrost is malfunctioning and the only way to resolve the problem is to replace the mother board part number WR55X10656 You can find the replacement board at these places below. Sea Breeze

http://appliancepartsse.blogspot.com/

http://appliancepartsse.blogspot.com/

Aug 25, 2009 | GE Refrigerators

3 Answers

Frigerator not cooling not cooling at all


make and model # was there frost on the evap.?

Sep 12, 2007 | Daewoo FR-147RV

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