GE PSB42LSRBV Manual page 80

 The fresh food defrost, evap drain pan, & icemaker fill tube heaters are in a
parallel circuit.
 The heaters are in series with a bi-metal defrost safety thermostat.
 Check for a combined resistance of 91 at terminal block CN09 between pin 1 &  Check for a combined resistance of 91 at terminal block CN09 between pin 1 &
pin 2 (when defrost safety thermostat is closed).
 Check for 120VAC at terminal block CN09 between pin 1 & pin 2 when the fresh
food is in defrost mode.
 The defrost safety thermostat opens @ 140
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GE imagination at work
Fresh Food Defrost Heater Testing
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GE Profile 42-48 Refrigerators (4/1/05)
GE CONFIDENTIAL & PROPREITARY INFORMATION - NOT FOR PUBLIC DISCLOSURE
Copyright 2007 General Electric Company – 12/14/2009
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