Question about Heating & Cooling
You can hear the burner kicking on & off till it finally stays on, after the 1st. time the burner kicks on you hear the fan start running.
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Posted on Jan 02, 2017
SOURCE: furnace won't stay running
Furnace fails to operate.
• Integrated control module
diagnostic LED is
flashing ONE (1) flash.
• Furnace lockout due
to an excessive
number of ignition
“retries” (3 total)1.
• Failure to establish flame.
Cause may be no gas to
burners, front cover
pressure switch stuck open,
bad igniter or igniter
alignment, improper orifices,
or coated/oxidized or
improperly connected flame
• Loss of flame after establishment.
Cause may be
interrupted gas supply, lazy
burner flames (improper gas
pressure or restriction in flue
and/or combustion air
piping), front cover pressure
switch opening, or improper
induced draft blower
• Locate and correct gas
• Check front cover
operation (hose, wiring,
Correct if necessary.
• Replace or realign
• Check flame sense
signal. Sand sensor if
coated and/or oxidized.
• Check flue piping for
length, elbows, and
• Verify proper induced
draft blower performance.
Posted on Nov 25, 2008
SOURCE: no hot surface igniter
This is why swapping parts is never a good idea. It could be a board, pressure switch, or several other issues. I'm a service technician and realize that many furnace issues are difficult to diagnose over the phone, or internet.
Calling a qualified, NATE certified technician to diagnose and repair this properly is probably the best solution that I could suggest. Yes, there will be a bill and it will be expensive, but it will be a lot less so than changing out parts you might not need.
Posted on Jan 03, 2009
If your Rheem furnace is less than 10 years old, it may store an error code to help you figure out if it is the furnace or the thermostat. Look at the circuit board for a blinking light. If you have to remove the panel that opens up the door safety switch, it will erase the code. Look for a small viewing port. Next time the furnace fails, prior to doing all the things you did last time, look thru the viewing port to count the number of blinks. Once you get the number, open the cabinet and on the wiring diagram glued to the back of one of the panels'\; there will also be an error code chart. It may give you a starting point where to look. If you have no error code, chances are that your thermostat is freaking out or has a bad connection. Hope this helps.
Posted on Dec 28, 2009
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