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Quest Dry RDS 10
Installation, Operation and Maintenance Instructions
9
www.QuestOnTheJob.com
Quest Dry RDS 10
Installation, Operation and Maintenance Instructions
quest
quest
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. Upper housing is not sealed to lower housing
Compressor runs with POWER button OFF.
1. Defective relay
2. Defective control board
3. Upper housing not sealed to tower
5.3 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 four screws attaching the bottom plate to the lower housing
3. Disconnect the impeller leads
4. Remove the four screws holding the impeller to the bottom plate
5. Reassemble the new impeller using the above procedure in reverse
5.4 Thermistor
The defrost thermistor is attached to the refrigerant suction line between the accumulator and the evaporator.
To replace thermistor:
1. Unplug the dehumidifier
2. Remove the front housing
3. Cut cable ties and remove insulation and aluminum tape.
4. Remove control panel
5. Unthread thermistor from control housing grommet
6. Detach thermistor from control board jumper
7. Reassemble thermistor and dehumidifier using the above procedure in reverse
Figure 4: Thermistor attached
to the refrigerant line.
