Boiler won't start


Old 01-18-18, 11:02 AM
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Boiler won't start

I have burnham boiler with 3 Honeywell zone valves 2 for heat and 1 for hot water (indirect) when call for hot water the zone valve opens but will not turn on boiler and circulator pump. I have to turn breaker off then back on and boiler will come on. I put new zone motor and new aquastat (L8148A) and still having issues. Can it be the the end switch in the valve body?
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Old 01-18-18, 04:15 PM
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Welcome to the forums.

With a multizone system... a single defective zone valve won't keep the burner from coming on.

We don't know much about your system.....natural gas or oil fired ?

I'm leaning towards oil and you have a burner issue.

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