Component Function and Testing

Thermostat

Thermostat is in a series circuit betw een high voltage

Check resistance across terminals, or for pow er at thermostat or high

 

 

 

 

 

 

 

 

board and defrost heater.

voltage board A/C output.

 

 

 

 

 

 

 

 

Opens and breaks circuit w hen thermostat senses

 

 

 

 

 

 

 

 

 

preset temperature above freezing.

 

 

 

 

 

 

 

 

 

After defrost thermostat opens, thermostat remains

 

 

 

 

 

 

 

 

 

open until end of defrost cycle and refrigerator starts

 

 

 

 

 

 

 

 

 

cooling again and defrost thermostat senses a preset

 

 

 

 

 

 

 

 

 

temperature generally below freezing.

 

 

 

 

 

 

 

 

 

At this temperature, defrost thermostat resets (closes)

 

 

 

 

 

 

 

 

 

for next defrost cycle.

 

 

 

 

 

 

 

 

 

 

 

Valve, w ater

Valve control w ater flow to ice maker.

Check resistance across coil w indings.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

RS1200001 Rev. 1

24

April 1998

Page 24
Image 24
Amana Bottom Mount Refrigerator service manual Component Function and Testing