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Component Function and Testing
RS1200001 Rev. 1 24 April 1998
Thermostat Check resistance across terminals, or for power at thermostat or high
voltage board A/C output.
Valve, water Valve control water flow to ice maker. Check resistance across coil windings.
Thermostat is in a series circuit between high voltage
board and defrost heater.
Opens and breaks circuit when 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.