Quest CDG 74
Installation, Operation and Maintenance Instructions
1-877-420-1330
8
www.QuestHydro.com
4.2 Troubleshooting
No dehumidification, neither hour meter display nor compressor run and POWER button does not turn ON.
1.
Unit unplugged or no power to outlet
2.
Defective control board
3.
Loose connection in internal wiring
No dehumidification, neither hour meter display nor compressor run with POWER button ON.
1.
Defective control board
2.
Loose connection in internal wiring
Some dehumidification, air mover runs continuously but compressor only runs sporadically.
1.
Unit is in defrost cycle, DEFROST light on
2.
Defrost thermistor defective or loose
3.
Loose connection in compressor circuit
4.
Defective compressor overload
5.
Defective compressor
6.
Defective relay
7.
Upper housing is not sealed to lower housing
No dehumidification, air mover runs but compressor does not.
1.
Bad connection in compressor circuit
2.
Safety float switch closed, check pump reservoir
3.
Defective compressor capacitor
4.
Defective compressor overload
5.
Defective compressor
6.
Defective control board
Air mover does not run. Compressor runs briefly but cycles on and off.
1.
Loose connection in blower circuit
2.
Obstruction prevents impeller rotation
3.
Defective air mover
Unit removes some water but not as much as expected.
1.
Air temperature and/or humidity have dropped
2.
Humidity meter and/or thermometer used are out of calibration
3.
Unit has entered defrost cycle
