My Puma 80 (perm pilot) pilot light is extinguised when the red LED lights up on the Modulator Board. I have to wait for this light to go out before the boiler can function properly again. This occurs when:
I turn off the DHW tap and the light stays on.
Room Thermostat is calling for CHW and stays on when thermostat is turned down. If the CHW is running and I turn on the DHW tap the red LED light stays on when I turn off the DHW tap.
When the boiler shuts down there is a rummbling sound followed by
the Air Vent hissing and dribbling a little water and steam.
Can anyone help?
I turn off the DHW tap and the light stays on.
Room Thermostat is calling for CHW and stays on when thermostat is turned down. If the CHW is running and I turn on the DHW tap the red LED light stays on when I turn off the DHW tap.
When the boiler shuts down there is a rummbling sound followed by
the Air Vent hissing and dribbling a little water and steam.
Can anyone help?