My duo therm furnace is in a 1986 Impa travel trailer and has a converter box. It was working last night but it didn't come on this morning,so I turned up the thermostat and nothing happened so I cut the thermostat off and back on I can hear a click in the thermostat and down by the furnace but nothing happens. No blower,no pilot light and no smell of gas which is good. Its not the gas because my stove is working, also the heater is below the stove. My son and I were sitting here with the thermostat on hoping it would start and all of a sudden we heard a loud crack like something broke and it sounded like it was something on the counter but I couldn't find anything so I am thinking it was something in the heater. I have not took the heater apart yet is there anyone who has a diagram of this heater and its parts or can tell me anything I am on a fixed income and really cant afford to have a specialist come out and look at it.
I would make sure there is power to the unit before I attempted any repairs. Gas being available will not allow the thermostat or gas valve to operate if there's no power to them
SOURCE: Duo Therm AC won't cut off with thermostat
Hi, sounds to me like the thermostat is at fault.You have done nothing wrong to it but cover it up. The t-stat is what controls it, turns it on and off. The only other thing that would keep it on all the time would be that the thermostat wiring could be touching together from the stat up to the unit. You might check that before replacing stat. I have seen this many times.You can start the unit and go up top and disconnect the stat wire and it should stop the unit.Then its either the wire or stat.Let me know what you find,
Sincerely,Shastalaker7
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