36
Diagnostics
Thermostat Satisfies
in Defrost
Failed Defrost Relay
(doesn’t stop O.D. Fan)
Loose Defrost
Sensor
Incomplete
Defrost
Excessive
Defrost
No
Defrost
Wrong Defrost Control
Timer Setting
Poor Sensor
Location
Low System
Charge
Poor Sensor
Location
Wrong Defrost Control
Timer Setting
Reversing Valve
Stuck
No Defrost Timer
Control Power
Failed Defrost
Control
Failed Defrost Relay
During Defrost
Defrost
System
Wind
Affecting
Defrost Mechanical Checks Flowchart
DIAGNOSTICS