Gas Boiler Main burner go out

Old 11-08-09, 07:09 AM
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Gas Boiler Main burner go out

tring trouble shoot boiler issue, system calls for heat, spark igniter lights pilot, Main burner lights and then after 10 to 20 sec. go's out and the cycle starts over. Some times it will burn for one heating cycle. Any Ideas??
Old 11-08-09, 09:31 AM
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There could be a problem with the flame rod circuit.

The very first thing to look at is to make sure that all of the electrical connections are CLEAN! and most particularly the GROUND CONNECTIONS. If there are weak ground connections, you can see intermittent operation that you describe.

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