We installed 765hfl for customer about 9 months ago. They recently mentioned that heater wasn't working. We replaced the heater element about 2 weeks ago and the customer just reported that the heater had quit working again. Hmmm... Seems that just replacing the heater element may not be the solution. Any suggestions?
I have replaced 5 of these (on one unit). The reason the heater quits working is that the thermistor in the heater assembly fails. (The thermistor is a little gizmo about the size of a 22 cal. rifle cartridge that lets the juice flow into the coils, which heat up until the thermistor reduces the juice, at which time the coils cool down.. The thermistor fails in the OPEN condition, so that no juice gets to the coil at all.)
No clue as to why the thermistors fail.
Date published: 2017-03-08