Originally Posted by
Scott_Lewis
I've got about 12 of these at a govt installation. I was getting one or two calls a month for SC555's. I finally decided to try some t/s on one that was throwing the code every two or three days. I changed the AOF to off and the problem stopped. Went back a couple weeks later to turn it back on with the expectation that I would start getting the codes again. Hasn't come back since.
Go ahead and laugh. I just figured there was no way in hell that every one of those machines had bad thermistors. They all made the cutoff for the newer version thermistor.
I think there is a power/firmware issue going on here.
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