Справочник Пользователя для Therma-Stor Products Group R175

5

No dehumidification, air mover runs but compressor does 
not.
. 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.
.   Loose connection in blower circuit
2.   Obstruction prevents impeller rotation
3.   Defective air mover

Unit removes some water but not as much as expected.
.   Air temperature and/or humidity have dropped
2.   Humidity meter and/or thermometer used are out of 

calibration

3.   Unit has entered defrost cycle
4.   Air filter dirty
5.   Defective defrost thermistor
6.   Low refrigerant charge
7.   Air leak such as loose cover
8.   Defective compressor
9.   Restrictive exhaust or inlet ducting

Unit runs but does not pump water.
.   Hose kinked or plugged
2.   Pump motor defective
3.   Pump check valve plugged
4.   Bad connection in pump circuit
5.   Hose disconnected internally
6.   Defective control board (pump phase)

Unit pumps water automatically but not when PURGE 
button is pushed.
. Bad connection in PURGE button circuit
2. Defective control board

Evaporator coil frosted continuously, low dehumidifying 
capacity.
. 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.
. Defective relay
2. Defective control board
3. Upper housing not sealed to tower
No hour meter display when the HOURS button is pressed.
.   Unit is plugged in
2.   Battery charge is low. Replace battery
3.   Defective control board

The motorized impeller has a PSC motor and internal 
thermal overload protection. If defective, the complete 
assembly must be replaced.
.   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

The defrost thermistor is 
attached to the refrigerant 
suction line between 
the accumulator and the 
evaporator.
To replace thermistor:
.   Unplug the dehumidifier
2.   Remove the front housing
3.   Cut cable ties and remove aluminum tape.
4.   Remove control panel
5.   Unthread thermistor from control housing grommet
6.   Detach thermistor from control board jumper, J
7.   Reassemble thermistor and dehumidifier using the 

above procedure in reverse

Figure 4: Thermistor attached
to the refrigerant line.

Figure 5: Picture of pump and reservoir.