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Hi Folks,
I have a problem with my boiler/CH/HW setup which I am having difficulty troubleshooting.
There are two scenarios:
The programmer/timer is off for both CH and HW: Boiler is running, and continues to do so until next program change or reset (button or mains power off/on)
The programmer/timer is On for both CH and/or HW, thermostats under desired temp: Boiler does not run, resetting does not help. Strangely if I manually activate the motorized zone valve the boiler kicks in to life.
Recently had Hive installed (by a qualified electrician) but this problem existed with the previous programmer. Since Hive has been installed I have replaced both the hot water tank thermostat and motorized zone valve.
Symptoms I have noticed:
The boiler was installed in 2003 when the house was built, I believe it has the newer Siemens PCB going by the front panel. The boiler doesn't show any fault lights or lockouts.
Any troubleshooting pointers I would appreciate.
Thanks,
Gordy
I have a problem with my boiler/CH/HW setup which I am having difficulty troubleshooting.
There are two scenarios:
The programmer/timer is off for both CH and HW: Boiler is running, and continues to do so until next program change or reset (button or mains power off/on)
The programmer/timer is On for both CH and/or HW, thermostats under desired temp: Boiler does not run, resetting does not help. Strangely if I manually activate the motorized zone valve the boiler kicks in to life.
Recently had Hive installed (by a qualified electrician) but this problem existed with the previous programmer. Since Hive has been installed I have replaced both the hot water tank thermostat and motorized zone valve.
Symptoms I have noticed:
- Hive Off for both CH and HW | Boiler is running | Motorized valve light on for CH and in the correct position for CH only | 235v supply on the CH and HW circuit. In this scenario the hot water tank thermostat had reached temp and explains why the motorized valve was set for CH only.
- Hive On for both CH and HW | Boiler is not running | Motorized valve lights on for both CH and correct position | 235v supply on CH circuit but only ~55v on HW circuit? | Thermostats under desired temp.
The boiler was installed in 2003 when the house was built, I believe it has the newer Siemens PCB going by the front panel. The boiler doesn't show any fault lights or lockouts.
Any troubleshooting pointers I would appreciate.
Thanks,
Gordy