Acme How To Logo Acme How To Logo
Related Articles
Appliance Repair

New Appliances

Electrical Repair

HVAC Repair

Home Maintenance





Newsletter

Sign up to receive our free Maintenance Reminder Newsletter

Learn More


How to Test the Defrost Thermostat

continued from page 1

The panel may be held in place by retainer clips or screws. Remove the screws or depress the retainer clips with a small screwdriver. On some older top freezers it is necessary to remove the plastic molding to access the freezer floor. Removal of that molding can be tricky -never force it. If you decide to remove it, you do so at your own risk - it is prone to breaking. Try warming it first with a warm, wet towel.

The thermostat is connected by two wires. The wires are connected with slip on connectors or a wiring harness. Firmly pull the connectors or harness off of the terminals (do not pull on the wire). You may need to use a pair of needle-nose pliers to remove the connectors. Inspect the connectors and the terminals for corrosion. If the connectors are corroded they should be replaced.

Test the thermostat for continuity using a multitester. Set the multitester to the ohms setting X1. Place a probe on each terminal. The multitester should display a reading of zero when the thermostat is cold and a reading of infinity when it is warm (40 to 90 degrees F depending on the model). If the thermostat does not pass this test it should be replaced.

page 2 of 2

Previous page





Search for Articles on Acme How To

Ask an Appliance Technician Now

We have partnered with JustAnswer so that you can get an answer ASAP.

JustAnswer