4EverNovice
New Member
I have the following condition:
When the thermostat or hot water tank calls for heat, the circulator pump would turn on, but the boiler would not fire up. The pilot light is lit. I would have to turn the system off via shut-off switch, and when I turn it on, everything will work as it should.
This first happened in May of 2021. It has since happened once a month since October. I'm not sure where to start with troubleshooting. Any and all suggestions would be greatly appreciated and welcomed.
It is a three zone hydronic heating system running on a Weil-McLain gold CGa gas-fired water boiler. It is controlled by a Taco 3 Zone Switching Relay w/ Priority SR503-EXP-4. The switching replay was replaced in August.
When the thermostat or hot water tank calls for heat, the circulator pump would turn on, but the boiler would not fire up. The pilot light is lit. I would have to turn the system off via shut-off switch, and when I turn it on, everything will work as it should.
This first happened in May of 2021. It has since happened once a month since October. I'm not sure where to start with troubleshooting. Any and all suggestions would be greatly appreciated and welcomed.
It is a three zone hydronic heating system running on a Weil-McLain gold CGa gas-fired water boiler. It is controlled by a Taco 3 Zone Switching Relay w/ Priority SR503-EXP-4. The switching replay was replaced in August.