Hello,
My heater is hit and miss this season. Beginning of the season was fine. Last few weeks, when I call for heat, it occasionally stops basically immediately and throws on the Service and Pressure/High Limit red lights. Never tries to light.
Cycling just the power to the heater doesn't seem to help. Turning off the pump and heater for like 30 seconds, then turning the pump on for a few seconds, then turning the heater on, then calling for heat, seems to somewhat reliably get it to light. Once it decides it's going to light it works fine, lights immediately, stays lit.
Control board was replaced 3 years ago.
I'm leaning towards a sticking pressure switch or something? What should I be looking for and testing to find something to replace?
I'm worried that one day my trick will stop working completely.
My heater is hit and miss this season. Beginning of the season was fine. Last few weeks, when I call for heat, it occasionally stops basically immediately and throws on the Service and Pressure/High Limit red lights. Never tries to light.
Cycling just the power to the heater doesn't seem to help. Turning off the pump and heater for like 30 seconds, then turning the pump on for a few seconds, then turning the heater on, then calling for heat, seems to somewhat reliably get it to light. Once it decides it's going to light it works fine, lights immediately, stays lit.
Control board was replaced 3 years ago.
I'm leaning towards a sticking pressure switch or something? What should I be looking for and testing to find something to replace?
I'm worried that one day my trick will stop working completely.