FREQUENTLY ASKED QUESTIONS
HOT WATER CIRCULATOR
Pumps not running in 'AUTO'
Possible Cause:
| Timer in controller not set to ‘ON’ |
Solution:
| Toggle timer to ‘ON’ |
System in fault
Possible Cause:
| Overload fault due to high current draw |
Solution:
| Ensure pumps are not seized/jammed |
Pumps making loud noise
Possible Cause:
| Pumps have run dry |
Solution:
| Confirm water is present when bled screw-on pump face is opened |
No water in discharge line
Possible Cause:
| Isolation valve on discharge is shut | |
| Incoming supply is not present | |
| Pumps are switched ‘OFF’ | |
Solution:
| Open discharge isolation valve | |
| Ensure water supply to pumps is available | |
| Ensure pumps are in the ‘AUTO’ setting | |
No indication lights on control panel
Possible Cause:
| Incoming power supply not present | |
| The internal circuit breaker is off | |
| The ribbon wire for the touch panel is not aligned on PLC | |
Solution:
| Ensure the power supply to the controller is stable | |
| Switch the main circuit breaker on | |
| Ensure all pins are aligned when connected and orientation is correct | |