The PCB controls major elements of all boilers including: the fan, pump, gas valve, thermocouple, thermostat, overheat, etc. Most problems are cumulative with PCB issues. There is a…
Faulty printed circuit board (hot water side)

The PCB controls major elements of all boilers including: the fan, pump, gas valve, thermocouple, thermostat, overheat, etc. Most problems are cumulative with PCB issues. There is a…
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