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DEFROST MECHANICAL CHECKS FLOW CHART
DEFROST SYSTEM
No Defrost Incomplete Defrost Excessive Defrost
Reversing Valve Stuck Poor Sensor Location Wrong Defrost Control
Timer Setting
No Defrost Timer Wrong Defrost Control
Control Power Timer Setting Poor Sensor Location
Failed Defrost Control Failed Defrost Relay Low System Charge
(doesnʼt stop O.D. Fan)
Failed Defrost Relay Thermostat Satisfies Wind Affecting
During Defrost in Defrost
Loose Defrost
Sensor
TROUBLESHOOTING
Troubleshooting
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