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jac1962
Oct 6, 2008, 04:33 AM
I have an older Rheem gas hot water boiler heater - pilot is on, and I have turned up the thermostat, which appears to be working (saw a spark in the mercury when I turned it up) - burner is not coming on - what's wrong?
hvac1000
Oct 6, 2008, 02:41 PM
Could be a defective thermocouple if it is a old non 100% shut off unit.
jac1962
Oct 6, 2008, 07:34 PM
thanks - I'll check it out.