Hey everyone, my furnace is used for heat on demand only, not hot water, and the past year (didn't use it all summer) it has had this intermittent problem that trips the reset button almost every day now. When I press the reset button it always fires right up and runs until it hits high temp, and it will kick on as needed, such as if I turn up a thermostat, but almost every day now (wasn't as frequent initially) the reset button trips on it. I had my furnace guy come out and check it out and he looked everything over and said everything was set perfect and if it keeps happening try bypassing the delay valve, and if it still keeps happening get a new oil pump. Well of course it kept happening so I did by pass the delay valve and that made no difference, except obviously the fire starts right away when I hit the reset button. Before I replace the pump I figured I would get an opinion here first. I have read a bunch of threads but they usually involve some other behavior like it shuts off after running for 30 seconds, or sputters, or they have to tap the motor, but mine seems to run perfect otherwise. I also thought if the electric motor on the burner had a bad spot, or the solenoid was bad, then it probably wouldn't so reliably fire up every single time I press the reset button. I replaced all my thermostats with digital ones just in case, but that made no difference (no surprise). Also I replaced the oil filter and put a vacuum gauge on it to make sure it wasn't getting choked (and re-bled it) and that didn't matter. So I was wondering if anyone wanted to venture a guess at what the problem might be or at least some tips for trouble shooting it? I am comfortable with the multi-meter if anyone wants to tell me to what to check?
Thanks for your help!
To give you some background info about my system, here is some model info:
Thanks for your help!
To give you some background info about my system, here is some model info:
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