luxaire gas forced air furnance
#1
05-03-22, 04:46 PM
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luxaire gas forced air furnance
I have a Luxaire gas furnace fires up good runs heats for about 5 minutes flame goes out blows cold air
it has a washable filter and thats clean i cleaned the flame sensor same thing. i bought a new pressure switch off ebay matching number one the one that was in my furnace installed it. furnace worked good for a week i come home today furnace blowing cold air has 8 red flashes . i shut furnace off and started back same any ideas
it has a washable filter and thats clean i cleaned the flame sensor same thing. i bought a new pressure switch off ebay matching number one the one that was in my furnace installed it. furnace worked good for a week i come home today furnace blowing cold air has 8 red flashes . i shut furnace off and started back same any ideas
#2
05-04-22, 12:24 AM
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Welcome to the forums.
The 8 flash code is a one hour lockout code after a fault occurs 4-5 times.
You need to watch for the fault code that is set as soon as the problem occurs.
It sounds like an overheat problem.
The 8 flash code is a one hour lockout code after a fault occurs 4-5 times.
You need to watch for the fault code that is set as soon as the problem occurs.
It sounds like an overheat problem.
#3
05-04-22, 03:03 PM
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pete it has one of those washable filters it looks clean i will see if i can get a different type and see if that makes a difference
#5
05-04-22, 05:16 PM
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ok so i took filter out did same thing it has no flashes till after the burner goes out then it blows cold air and has 8 flashes
so i shut furnace off turned back on started burner went out after about 5 minutes then in a little bit the ignitor started glowing nothing happen i took a screwdriver and tapped on gas valve nothing i tapped on the pressure switch fired back up finished the cycle till it warmed up house then shut off do u think it needs a new pressure switch i looked online they are about 32.00 should i buy one and try that
so i shut furnace off turned back on started burner went out after about 5 minutes then in a little bit the ignitor started glowing nothing happen i took a screwdriver and tapped on gas valve nothing i tapped on the pressure switch fired back up finished the cycle till it warmed up house then shut off do u think it needs a new pressure switch i looked online they are about 32.00 should i buy one and try that
#6
05-04-22, 07:34 PM
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then in a little bit the ignitor started glowing nothing happen
It is not the pressure switch. The pressure switch must prove before the igniter will heat.
Your pressure switch is proving.
You'd need to monitor for 24vAC to the gas valve when the burner should be operating.
Lot of good info here..... Please read first for furnace repairs.
#7
05-06-22, 06:10 PM
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i did check all the vents and heat and the fresh air vents i even took a panel off on the fresh air vents i maybe calling them something different then they r the cold air vents that did not help it could be the air conditioning coils how do i get at those should there be a panel i can take off it is wrapped in some type of insulation please advise
thank you
thank you
