I have a Day and Night unit that's about a 1979 model the model # is 585A030080YACR the problem is when I turn it on the ignitor sparks but it won't open the pilot gas valve
Other times it works great, not sure if I need a thermostat or ignitor or if it's the gas box
Please help!



Thanks ed5612

Quote:

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Originally Posted by ed5612

I have a Day and Night unit thats about a 1979 modle the modle # is 585A030080YACR the problem is when I turn it on the ignitor sparks but it won't open the pilot gas valve
other times it works great, not sure if I need a thermostat or ignitor or if its the gas box
please help!



Thanks ed5612

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That unit might have a 3 wire pilot/safety control. They can and do cause problems.


Does it look like this.

Yes it looks just like that!

Quote:

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Originally Posted by hvac1000

That unit might have a 3 wire pilot/safety control. They can and do cause problems.


Does it look like this.

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Yes it looks just like it!

Then check it with a meter to see if it is good or replace it. This is usually the problem but I cannot test it for you,