WaterLogic WL900 Operating instructions

WL900 Manual Page 51 – Revision: 5-12-2021
POWER TROUBLESHOOTING INDEX
1. No Power to Unit, LED Panel does not Illuminate
2. Compressor Runs but does not Chill
3. Compressor is not Running
4. Unit has Power, but Water is not Chilled or Heated
5. Unit has Power, LED Panel does not Illuminate or only partially Illuminates
1. No Power to Unit, LED Panel does not Illuminate
Possible Cause Solution
Circuit Breaker tripped Check the circuit breaker, reset any tripped breaker.
Blown Fuse Check Fuse in Unit Replace if necessary.
Loose Power Cord Check that the power cord is properly plugged in.
PCB Failure Check the PCB for Power incoming and outgoing.
2. Compressor Runs but does not Chill
Possible Cause Solution
Condenser is dirty Clean the condensing coil of any obstructions or dust.
Reduction of airflow
across condenser coils
Make sure unit is not under minimum ventilation
requirements.
Compressor very hot to
the touch
Low or lost refrigerant. Refrigerant recharge required.

WL900 Manual Page 52 – Revision: 5-12-2021
3. Compressor is not Running
Possible Cause Solution
Compressor Starting
Circuit
Remove cap on side of compress, inspect for damage or
defects.
4. Unit has Power, but Water is not Chilled and Heated
Possible Cause Solution
Transformer Failure Replace Transformer
PCB Power Cable
Connected Improperly
Check connection of power line to the PCB
PCB Failure Replace PCB
5. Unit has Power, Front Panel Does not Illuminate or only partially
Illuminates
Possible Cause Solution
LED Failure
LED boards may have failed, inspect and replace as
needed.
LED Panel Connection
Ensure the connections from the Front Panel LED boards
to the main PCB are made properly and secure.