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Old 04-25-2011, 01:17 PM   #1
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Heatilator Direct Vent Gas Valve Problem


Customer's Heatilator model GCDC60 worked fine for 11 years. A couple of months back it started not turning on by the wall thermostat. Then it wouldn't turn off unless customer turned the Robershaw 7000 gas valve control to "off". I have disengaged wall thermostat, and it stil won't turn off unless I disconnect one of the two thermostat wires from the control valve, even though the wall thermostat is off and it's two connecting wires aren't touching! Pilot lite is on, thermopile must be working, because the main burner continues working after it starts up, then the fan blower motor kicks in when it's supposed to start distributing hot air into the room.

Suggestions?


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Old 04-25-2011, 10:57 PM   #2
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Heatilator Direct Vent Gas Valve Problem


Have you tried doing a continuity test on the wire with it unhooked from the gas valve. Maybe it shorted through the coating on a staple in the wall, or a nail or something. You may need to run a new wire to the stat if that is the case. Just a suggestion.

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Old 05-02-2011, 01:42 PM   #3
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Heatilator Direct Vent Gas Valve Problem


Dave,

That's exactly the problem! Somehow the bell wire from the thermostat to the fireplace shorted, and when I jumpered the gas valve with a simple switch, eureka, there she blows!

Now I just have to figure out how to thread a new wire from one wall of the room over to the fireplace. Might be able to go through the basement.

Thanks for you quick simple suggestion! Save me a $ 150 service call.

Ed Marshall
Akron, OH
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