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  1. HVAC
    American Standard Freedom 90 VS furnace (city natural gas supply) model AUY100R9V4V0 SN N411SX47G Furnace has a problem with all burners lighting. When call for heat is presented, ECM motor blows properly, igniter turns on & glows bright orange, gas control valve opens, and flame starts at...
  2. HVAC
    We been having problems with our 20 yrs old Carrier furnace (model# 58GSC065). The furnace has a electric ignition system. After the pilot flame turns on, sometime the heat exchanger burner won't go on, sometime after the heat exchanger burner flames on the blower won't turn on. We suspect it...
  3. HVAC
    I have relocated a thermostat that controls a ComfortMaker Model C9MPV075F12C1. The furnace functioned properly prior to the move. I was very careful in reconnecting the wires the same way they were disconnected. When the thermostat calls for heat, it clicks on, but nothing happens now at the...
  4. HVAC
    My exhaust fan motor has gotten really whiny on my 10 year propane Heil furnace. It looks very easy to replace. There are 4 screws holding the whole unit on and 3 wires to disconnect (a ground and a plus and minus). Also there is a rubber coupling tube on the exhaust pipe. Is this a fairly...
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