What to do if the HB-THERM THERMO-5 HB-160Z1 Control Unit system pressure is too low?
- MMargaret HughesAug 5, 2025
If the HB-THERM Control Unit displays a system pressure that is too low, or if the initial filling time or filling time is exceeded, several factors could be at play. The issue might stem from a large external volume. Additionally, low mains water pressure could be the cause, so increasing it may resolve the problem. Ensure the cooling water or system water connections are correctly made, opening any cut-off valves if present. Check quick-release connectors for blockages, cleaning or replacing them as needed. Inspect hose connections for leaks and replace them if necessary. Other potential causes include a defective filling pump (repair or replace it) or a pressure sensor that needs calibration or replacement. Acknowledge alarm for initial filling time exceeded.