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  1. HVAC
    I was asked to look at a friend's 2003 Heil. It's 100,000 BTUs in a 1400 SQ ft house. Heats fine until temp drops down below 10F. The sticker shows a tech installed a board timer a few years ago. The burners switch on and off every 30 seconds. Blower keeps blowing. Plate says the temp rise...
  2. HVAC
    I have a Tempstar model NUG9100FHA1. During a regular heating cycle with the Fan set to Auto, everything works perfectly for about 7 minutes, and then the air circulating fan will suddenly stop for no apparent reason. During this time the burners and draft inducer motor are still running...
  3. HVAC
    I have a Rheem Furnace model RGPH-07EAUER, serial # DF5D302 F1295 5487 Around December 2017, I started having issues with the burners going out. I cleaned and even replaced the flame sensor, and I also cleaned, and sanded the burners and the chassis area around the burners, yet no love...
  4. HVAC
    Hey all, I have a 13 year old Trane XR90 / propane, and starting last season sometimes it would blow lukewarm air instead of hot air when the heat was on. I would check the furnace, and it would blink twice, then repeat, which means external lockout retries exceeded. I would reset it a few...
  5. HVAC
    I can't get at four wire loops securing the cast iron ribbons to the chassis. The first figure is a zoom-in of what I'm dealing with. I've removed the manifold in the front, but I can see four wire loops in the back (drawn in magenta), and there's no way i can reach in there. The second...
  6. HVAC
    I have a 17 year old Lennox whisper heat Furnace with a delayed ignition. There are three burners. When cold started, the pilot light will ignite, then the middle and left burner will ignite. The flame sensor and pilot is on the middle burner. The right burner will take an extra few seconds...
  7. HVAC
    My heater hasn't come on after turning it on for the first time this year. I get a constantly flashing LED - normal call for heat - and the ignitor comes on, but the burner won't light. The gas valve is on, and despite the burners not coming on, the unit runs then constantly and the LED blinks...
  8. HVAC
    I have a 12 year old Comfortmaker gas furnace. It operated fine all last winter. When I went to fire it up the first time today, only 4 of the 5 burners light off (burners 2 thru 5 when counting from where the gas enters the manifold). The ignitor is in front of burner 5, the ignition sensor...
  9. HVAC
    Need help... Ruud Furnace Model UGAC-O6KC (0orO) Serial TN3D104 F2083 6467 electric ignition, when I watch it, it clicks, the ignitor does not light the pilot. I manually light the pilot, after about 30 seconds, the pilot clicks and goes out. about 15 seconds later it click again but does...
  10. HVAC
    I have a Payne 376c Furnace that seems to have just stopped working. The inducer motor turns on and eventually the blower motor turns on but the HSI never heats up so of course the burners never light. Is there anything that this specifically indicates?? BTW, the furnace uses a 310305-201...
  11. HVAC
    Hi! (Happy New Year!) :party: I have a 25 year old Payne forced air heater (no A/C since I live by the beach). It has been working well this winter until last week when it stopped suddenly. I had no pilot ignition from the electronic ignitor and so I took the following steps to identify the...
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