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burnham scg control problem

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Chris_61
Chris_61 Member Posts: 7
in Thermostats and Controls
I started a burnham scg gas boiler today and it runs continuously without any call for heat, tt disconnected and it only shuts down by the hi limit control.

I replaced the combo transformer/relay, honeywell R8285D,
still the same problem. The blower relay pulls in as soon as the boiler is energized and the boiler fires up. It seems that there may be a problem with the factory control wiring. Any suggestions.

CG

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  • carol_3
    carol_3 Member Posts: 397
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    I would very carefully check the wiring again. Maybe even unwire completely and very deliberately connect each wire exactly as the wiring diagram shows.
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