Question about Montgomery Ward (223600UP) Heater

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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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  • kragan62 Oct 28, 2008

    pilot stays lit but the burners wont ignite. thermostat wires are all attached except the white one where it goes to the unit. should the white wire connect somewhere?

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If the pilot light stays lit, but the burners don't kick on, it's a problem with the thermostat or thermostat wiring, or a problem with the valve inside the gas actuator

Posted on Oct 25, 2008

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