If pilot is lit I
check to see if there is power. coming
to boiler If no power I check breaker.
ok so we have
power and pilot is lit Boiler is set up
to be hot, but boiler is cold Why? most
boilers have 24v gas valves, some have
120v but most have 24v this power is
supplies by a transformer the power goes
through the transformer through the
aquastat then through all the safety
switches, rollout switches and spill
switches any one of these can be tripped
and or burned out. not all boilers have
these safety devices the older one we
worked on above does not have any.
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