Lennox Whisper Heat Troubles
Hello, I have a Lennox Whisper Heat Furnace about '94 (BCC2-2 REV B LB-65126A BOARD AND A MODEL SP745 MODULE NR-C-60-30 PART # 100-00831-01) that I'm having trouble with. I followed the Trouble shooting guide but I am not convinced I have solved the puzzle. My transformer is good. My door opens, blower checks out. Last year when I bought this house it operated a bit funky and would take a few attempts of turning the thermostat up and down to call or not call for heat before it would ignite. Now, it won't ignite at all. I tested the voltage to the gas valve and the PV and MV terminals I get a about 27volts. I tried to manually ignite the pilot after cleaning the Flame sensor and ignitor and nothing. I think this lead me to the Gas valve? I tried turning the gas valve on while calling for heat and the pilot line removed and could not smell NG coming out of the valve. Please someone, help.
Make sure your gas valve does have a gas supply.
If you are getting 24 V to the PV and no gas comes out of the pilot port of the valve, then the valve is faulty.
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