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MAINTENANCE
Fault
cause
solution
The generator temperature is correct but
the heating systems are cold
- Air in the system
- Bleed system
- System pump
- Unseize pump
- Replace pump
Frequent triggering of system safety valve
- System safety valve
- Check calibration or efficiency
- System pressure
- Check filling pressure
- Check pressure reducer
- Check filling valve
- system expansion tank
- Check efficiency
system pump(s) not working
- Pump seized, electrical connections
- Check pump and connections
- Ambient thermostat
-
Check ambient thermostat and
connections
Water heater pump not working
- Pump seized, electrical connections
- Check pump
- Check electrical connection between
the pump and the control panel
- Water heater thermostat
- Check thermostat operation and
position