Once you have found your refrigerator's defrost timer, remove it for testing.

Once the 10 hours is over, the defrost timer will switch back to pin 2, activating the defrost. Defrost timers almost always have four metallic terminals extending from the bottom. Here's the evaporator thermistor for your model: Thermistor WR55X10025 The compressor should turn off and the heater should turn on. Caution: This is a Static sensitive part and must be handled with care. One of the key components of the defrost system is the defrost timer. Test the Defrost Timer. Step 1 - Understand What and Where. The defrost timer tells the refrigerator thermostat when to turn off the cooling, usually about every …
Refrigerator seems to be working fine but the freezer isn't cold enough in one of our rentals. But I was hoping to check the defrost timer while I was there but couldn't find it. The mother board is mounted on the back of the refrigerator. Like a clock, this keeps the rhythm of defrosting and cooling going according to pre-set time intervals. Locate your refrigerator's defrost timer. Before testing the defrost timer, unplug the refrigerator to avoid an electrical shock hazard. Refrigerator icemaker kit, The kit includes the fill cup, 4 pin wire harness adapter, and tube.

To check the defrost timer motor, clip one probe of the VOM to each motor wire, setting the scale to RX100. Unplug first.

Unplug the refrigerator first, then test the defrost heater first, take the wires off before testing.

You should feel heat coming out of the unit.

To gain full access to the defrost timer, pull the sensor bulb out of its housing. Once you have found your refrigerator's defrost timer, remove it for testing.

Ultra Durable WR9X483 Refrigerator Defrost Timer DIRECT Replacement for OEM Part by Blue Stars – Exact Fit For GE & Kenmore Refrigerators – Replaces WR09X10130 WR9M418 WR9X10075 PS310852 4.8 out of 5 stars 15 If the icemaker is not working, make sure the freezer temperature is around zero degrees Fahrenheit. Depress the locking tabs holding the timer in place and lift the part up and out of the control panel. )[/COLOR] No. Note: This video is intended to give you the general idea of the part replacement procedure. Your appliance may differ depending on the manufacturer and model.

Mechanical defrost systems use a mechanical timer to initiate a defrost cycle every so often.

Remove the timer once you have located it. Defrost timers almost always have four metallic terminals extending from the bottom. Locate your defrost timer. I had the bottom of the freezer out and looked at the coils and heater. The electronic adaptive defrost control board will automatically activate.
If the timer does not send power to the defrost components or advance out of the defrost cycle within 30 minutes, this indicates that the defrost timer … Unplug first. If the needle jumps, the defrost timer is faulty. Remove the control panel from the refrigerator and place it on a flat work surface. No. Also depending on the model it may not use a defrost timer. You can test a defrost timer by measuring the resistance in the circuits when the timer is in each mode. ... Below is a picture of a main board that will be located on the back of GE refrigerator models covered in this section. The cam has a switch on it and an indent which controls cool and defrost.

There is no adjustment for defrost frequency or time on the timer. The GE refrigerator timer is located down behind the toe plate and in front of the condensor coils.

All of the information in this defrost timer replacement video is applicable to the following brands: GE, Hotpoint, Kenmore, RCA

I'm hoping this corrects the problem. Replace it with a new one of the same type. The defrost timer is usually found behind the front grill "toe kick" of the refrigerator. It can be located behind the refrigerator's lower kickplate, in the refrigerator's control panel, or even behind the refrigerator on its back wall.