Troubleshooting Guide

5 | Page
1. Use the ON/OFF button on the User Interface Assembly to turn the mode to OFF, then
flip the ON/OFF toggle switch to OFF, to reset the diagnostic code.
2. Turn the ON/OFF toggle switch back ON. With the mode still OFF, Press and hold the
MODE button and ON/OFF button to enter the Installer Test Mode.
3. The fan will run for 3 minutes with the display showing “AIR SAMPLING” and “TEST”, and
the inlet air RH. After three minutes, the “DEHUMIDIFYING” will replace “AIR SAMPLING”
on the display and the compressor will start – you should be able to hear this. The
compressor will run for one minute, and then the display will show “TEST DONE” and
return to the OFF mode.
If the compressor didn’t start (go to step 4), there is an electrical issue to address. If the
compressor did start (go to step 5), then you will need to verify that the refrigeration
system is working properly.
4. If the compressor doesn’t start
a. Turn the ON/OFF toggle switch to OFF.
b. Remove the panel on the side of the dehumidifier where the drain tube comes out,
and then remove the insulation piece. Inside the dehumidifier, remove the
electrical box cover.
c. Verify that the brown and orange wires are connected to the Internal Control board.
Verify that two brown wires are connected to one pole of the run capacitor and one
red wire is connected to the other pole. Give each wire a light tug to make sure all
connections are sound.
• If any of the wires were disconnected, place the side panel back on (do not
secure with screws yet), and repeat steps 2 and 3 above. If it starts, go to step 5
Run Capacitor Poles