OutWestDolphin Posted November 29, 2022 Share Posted November 29, 2022 Our original propane heater works great until the temps get into the teens. Then it just won’t turn on, not even the fan. The propane tank is full and gas is flowing to the stove. Any thoughts? thanks!! Quote Link to comment Share on other sites More sharing options...
linda s Posted November 29, 2022 Share Posted November 29, 2022 Low battery. If your plugged in does it happen? Linda S Quote Link to comment Share on other sites More sharing options...
OutWestDolphin Posted November 29, 2022 Author Share Posted November 29, 2022 Hi Linda, It is plugged into shore power. thanks! Quote Link to comment Share on other sites More sharing options...
WME Posted November 29, 2022 Share Posted November 29, 2022 Random thoughts Some one bumped the on/off switch on the thermostat (not temp switch.) Bad fuse in the 12v power panel Some heaters have a separate fuse in the heater for the fan motor. The motor is so old that the bearings lock up and blow a fuse. The typical sign of a low battery is a slow running fan motor, but it does run. No fan is usually NO power Quote Link to comment Share on other sites More sharing options...
linda s Posted November 30, 2022 Share Posted November 30, 2022 Since I'm assuming your not replacing fuses. After a while it just works again? That points to a faulty thermostat. After repeated short cycling because it's turning on and off so many times a faulty thermostat can just stop working. It thinks is warm enough inside. Thermostats aren't expensive and they are pretty easy to replace. I'd start there. Linda S Quote Link to comment Share on other sites More sharing options...
fred heath Posted November 30, 2022 Share Posted November 30, 2022 (edited) You can bypass your thermostat to determine if that’s the problem. Remove the face plate. You should see two screws with wires attached. Using a jumper wire(or even a pair of needle nose pliers) bridge the two screws together. You should hear the fan motor start. Allow to continue running until you hear the burner kick in and start producing heat. If this happens, it’s a bad thermostat. EDIT: This should be done when the thermostat is turned to high yet the furnace doesn’t run. Based on your narrative, the furnace works fine with warmer ambient temperature. When it doesn’t run, that’s when you want to jump the terminals. Edited November 30, 2022 by fred heath Quote Link to comment Share on other sites More sharing options...
Maineah Posted December 6, 2022 Share Posted December 6, 2022 As Fried said or just twist the wires together and wait for 30 sec. Quote Link to comment Share on other sites More sharing options...
OutWestDolphin Posted December 6, 2022 Author Share Posted December 6, 2022 Thank you all! The weather has warmed up so we haven’t been able to test the thermostat yet. I’ll post an update when we can test it. Quote Link to comment Share on other sites More sharing options...
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