Section 6 Troubleshooting
6-3
Cole Palmer
Checklist
Unit will not start
Check the controller for error codes, see Error Codes in this section.
Ensure the circuit protector is in the on ( I ) position.
Make sure supply voltage is connected and matches the unit's nameplate rating
±10%
No display on controller
Recycle the circuit protector on the rear of the controller.
Unit will not circulate process uid
Check the reservoir level. Fill, if necessary.
Check the application for restrictions in the cooling lines.
The pump motor overloaded. The pump's internal overtemperature overcurrent
device will shut off the pump causing the ow to stop. This can be caused
by low uid, debris in system, operating unit in a high ambient temperature
condition or excessively conned space. Allow time for the motor to cool down.
Make sure supply voltage matches the unit's nameplate rating ±10%.
Inadequate temperature control
Verify the setpoint.
Make sure the condenser is free of dust and debris.
Check the uid concentration.
Ensure unit installation complies with the site requirements in Section 3.
Make sure supply voltage matches unit nameplate rating ±10%.
If the temperature continues to rise, make sure your application's heat load does
not exceed the rated specications.
Check for high thermal gradients (e.g., the application load is being turned on
and off or rapidly changing).
Unit shuts down
Ensure button wasn't accidently pressed.
Ensure the circuit protector is in the on ( I ) position.
Check the controller for error codes.
Make sure supply voltage is connected and matches the unit's nameplate rating
±10%.
Restart the unit.
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