Quest CDG 74
Installation, Operation and Maintenance Instructions
1-877-420-1330
9
www.QuestHydro.com
4.
Air filter dirty
5.
Defective defrost thermistor
6.
Low refrigerant charge
7.
Defective compressor
8.
Restrictive exhaust ducting
Unit runs but does not pump water.
1.
Hose kinked or plugged
2.
Pump motor defective
3.
Pump check valve plugged
4.
Bad connection in pump circuit
5.
Hose disconnected internally
Unit pumps water automatically but not when PURGE button is pushed.
1.
Bad connection in PURGE button circuit
2.
Defective control board
Evaporator coil frosted continuously, low dehumidifying capacity.
1.
Defrost thermistor loose or defective
2.
Low refrigerant charge
3.
Dirty air filter or restricted air flow
4.
Front housing is not sealed to rear housing
Compressor runs with POWER button OFF.
1.
Defective relay
2.
Defective control board
4.3 Air Mover
The motorized impeller has a PSC motor and internal thermal overload protection. If defective, the complete assembly
must be replaced.
1.
Unplug power cord
2.
Remove the front housing
3.
Disconnect the impeller leads
4.
Remove the four screws holding the impeller to the mounting plate
5.
Reassemble the new impeller using the above procedure in reverse
