Wall furnace model # SFB50146B Thermal Coupler. Does it have 2 wires?
I am working on a "made for Montgomery Wards" wall furnace for some elderly people. Pilot light is working however the burners never kick on. Suspected the thermal coupler, so purchased one from my work and went to install it. Upon arrival, I notice a small copper tube, which I thought was the thermal coupler, but it was open on the top and hooked into a port marked "bleed" on the control valve. The new suspected thermal coupler runs down and has a red and white wire hooked up on the front of the control valve. So my question is...is this the thermal coupler and is there anyway to check it to see if that is the problem?
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I can't speak to the specific model but with most pilot lights, there is a switch setting or button for lighting. If you release that switch or button too soon, the pilot will not remain light. Hold the switch or button ON while you light the pilot. Keep holding the switch or button for about a minute until the heat sensor is sufficiently warmed that the pilot light stays on. Good luck.
If it touched a grounded metal surface, it is possible, leave the wires hooked up at the furnace, pull the thermostat off of the wall, disconnect the 2 thermostat wires, and then twist them together, the furnace should fire, if it does, then the thermostat is shot. Replace the thermostat, usually when there is a short, it burns out the heat anticipator on the thermostat.
Check and make sure the pilot flame is hitting the thermocoupler.Flame must touch thermocoupler, if the flame is not touching it, you may have to remove and clean pilot orfice to make flame stronger. check this before replacing thermocoupler, good luck.
Hi, that thermostat should be a wall mount. This heater has only 2 wires and any "Heat only", "millivolt" thermostat will work. Remove the old T-Stat and mount the new one on the wall, only 2 wires and less than a volt so no shock danger, doesn't even matter which wire goes where. Good luck and comment back if you need any help.
Hi, I have a Montgomery Ward Sunheat heater. It's a dual burner enclosed type with a door on the front. The fuel tank is cylindrical and about 1 1/2 - 2 gallons. The cap has a needle valve and when turned upside down releases fuel to the burners by gravity. The whole heater itself is rectangular with louvers on the sides and top. I don't know what wicks go in this or if there are compatible replacements out there. No 84ALO5800A is the only I.D. or Model No. Thanks, Jack