Not one of the circuit board, which has about 30 parts, maybe
including an IC, but I understand the wiring of the rest of it.
It's pretty simple.
On the circuit board, there's a mechanical relay, with a clear plastic
cover, that trips when it tries to run but there's no flame, or I'm
sure, when the fire chamber gets too hot, etc.
You remind me that about 20 years ago, it tripped because I'd run out
of fuel, and I couldnt' get it to reset. (The red buttom presses on
something that goes through the top cover of the relay.) I think it
seemed like it had reset, but nothing ran. I took out the circuit
board and tried to clean the contacts, and couldnt' get the file in.
Then I looked through all my relays for a replacment, then through all
the relays in my catalogs, and couldn't find the right size in a
latching relay. The next step was to use a relay that didn't fit and
run wires to it from the circuit board. But instead I put it back
together and it worked and it's been working fine for 20 years!!!!
That was the first reason I saved the neighbor's burner, to have a
replacment relay, but I havent' needed it.
On Wednesday, December 18, 2013 12:01:54 PM UTC-5, micky wrote:
We had a problem with our oil fired water heater this summer. Turned out that there's a photo cell, a light sensor, in the combustion chamber that shuts things down if there's no flame. After replacing that, it worked fine.
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