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Posted by kmr on January 06, 2004 at 08:52:30:
I have an ongoing intermittent ignition problem.
The system occasionally fails to ignite and sometimes i go through very short cycling of the boiler flame.
Have replaced igniter,flame probe and wiring harness to the the ignition module.
My heating contractor suggested I replace the ignition module. I had a white rogers 50d47-170 . the replacement is an universal 50e47-843. you have to inser a card for ignition type.
The new one gives me a polarity error and refuses to ignite. White rogers suggests "Measure AC voltage between terminal L1 and TH. If voltage
is approximately 145 VAC, polarity is reversed; reverse
secondary leads on control transformer. Correct reading
should be approximately 95 VAC.
I have that condition but am at a lost as to what wires to switch to fix the polarity.
Reversing the leads to the ignition switch does nothing.
I can't see where any of the main electrical is switched.
where should I be looking--the manufacturer offers no customer assistance and I can't get someone to look at this.
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