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Furnace Bryant plus 80 keeps failing intermittently to restart. Light indicator flashing code 3 which states pressure switch stuck open. Where is that so I can replace it.

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  • Roger Glatzhofer
    Roger Glatzhofer Dec 14, 2016

    In addition, if I cut the power switch to furnace and turn it back on in a few seconds, the furnace wil start and run. Just replaced the thermostat and still having restart trouble

  • Roger Glatzhofer
    Roger Glatzhofer Dec 14, 2016

    Sanded off flame sensor with no change in code or operation. Did find that if I turn thermostat to off and wait a bit, turning it back to on starts furnace just like cutting power at furnace.

  • Roger Glatzhofer
    Roger Glatzhofer Dec 14, 2016

    Furnace will shut down before reaching temp call from thermostat. Then will not restart without a power disconnect. After replacing thermostat a few days ago, everything worked as it should, temp maintained correctly, restarting normal. Now, back to requiring a cut off and power on to restart.

  • Roger Glatzhofer
    Roger Glatzhofer Dec 14, 2016

    Paul...send me an email address where I can send you pics of what I think is my switch. If you can verify that for me, I can get the part on order. Thanks, Roger Glatzhofer biblioteky@aol.com

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  • Heating & Co... Master
  • 2,558 Answers

You could also clean the flame sensor .Look for a black sort of box or it may be round should be near the combustion fan.

Posted on Dec 14, 2016

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Posted on Jan 02, 2017

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SOURCE: My Gas Furnace model# PBKM-LD20N140A will not

There is no reset button. The fault will clear itself upon cycling power to the furnace once the problem is corrected. The furnace has to establish air flow before it starts the ignition cycle. Check and make sure that your inducer motor is running during a call for heat and that the flue is free from restriction. eg. bird nests, animals, snow, ice etc.

Posted on Oct 04, 2009

  • 25 Answers

SOURCE: Code 3 - pressure switch stuck open. What do I do

where vent motor is there is usually a hose coming off which oressurizes when vent motor comes on, take hose loose **** or blow in it, take tooth pick and stick in all ports where hose connects (could be clogged) when sucking on hose you shoul hear pressure switch click each time you pull a vacumme, if fan has switch on back of fan as some Goodmans have the vent motor may need to be replaced.

Posted on Oct 28, 2009

  • 25 Answers

SOURCE: I have a ducane furnace, the inducer motor comes

make sure the hose from vent motor to pressure switch is not plugged, put tooth pick in both end normally the fan port is plugged.

Posted on Oct 28, 2009

james3751
  • 614 Answers

SOURCE: Furnace not kicking on

Kill power to furnace and retry heat. Sometimes high winds will cause a back pressure. That will cause the switch not to work. Also is the fan coming on when it calls for heat. If not check power at the board. You have two wires that go to the draftmotor. They should have 115 volts going to them. But try killing power to unit first. rus Keep in thuch.

Posted on Dec 16, 2009

Therinnaiguy
  • 1420 Answers

SOURCE: 3 flashing light....Aire-Flo furnace AF80MPA100B5A

That control board is several hundred dollars. If I may make a suggestion, take a jumper and when the inducer fan starts, jump out the pressure switch. If it starts, it's not the board but a bad switch, hose or blocked exhaust vent.

Posted on Jan 15, 2010

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2 Answers

Bryant plus 80 furnace no fan/ operation , yellow constant flashing light code , power to furnace was rerouted during remodel and since then furnace stopped working. Any suggestions ?


You need to have/ know the "fault code" chart for that specific furnace. Count the number of flashes and refer to chart. Look on the inside of the furnace blower door or other panel. Also look up on internet and print it off. If the furnace was allowed to run during the remodel it voids the warranty automatically. Read the installation manual.
Try resetting the electronic board by turning the power off then back on.

Mar 29, 2017 | Bryant Heating & Cooling

1 Answer

Error code= two red flashes, lockout/ no flame


Trane XV80 hard lockout, 2 flashes, Can't be reset - DoItYourself ...

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cause this fault. 2 RED FLASHES: This indicates that thenormally open pressure ... The furnace will lock out for one hour and then restart. 7 RED FLASHES: This fault code indicates that the flame could not be established. This no-light ... problem. Bothheating and cooling operations will be affected. Check

Jan 23, 2016 | Heating & Cooling

1 Answer

I have a Carrier model # 58MXA080-F-15112. I think my furnace is 30 plus years old. it isn't heating properly. The blower turns on and sometimes the flames come on, but sometimes they don't. As...


A 13 code means the furnace cycled on limit more than three times consecutively and is in a lockout for 3 hours. A 14 is ignition lockout. An ignitor does not intermittently quit working. I'm the service mgr at our shop, and I know that particular furnace model has a service bulletin out on bad secondary heat exchangers. If your lucky the filter is dirty, or the furnace condensate trap or drain is clogged. Most likely the secondary heat exchanger is plugged up and isn't allowing the pressure switch to make. Or the furnace is overheating due to it not being able to properly vent hot gas. Which would explain the high limit lockouts. Call an authorized carrier dealer so you can take advantage of the free heat exchangers and the $300 labor credit. You can also call an authorized Bryant dealer to perform the work for you. Only an authorized dealer can rectify this problem because the Bryant corp requires testing and paperwork in order to get your free parts and labor credit.
Good luck.

Dec 23, 2012 | Heating & Cooling

2 Answers

Bryant furnace plus 90 led code is blinking once then 3 times fast. What does it mean?


these codes are on the inside panel of the front cover of the furnace. lift off and look inside.there should be a code explain chart on the panel by the light. this panel will need to be replace correctly for the furnace to work as there is a door switch.

Jan 31, 2011 | Heating & Cooling

1 Answer

Hi, the lights on my circiut board are flashing the one on the left is on all the time and the one to the right of it flashes two times and then waits and then flashes two times again


Error Codes
A green LED indicates system faults
Steady On: System OK
Steady OFF: Board control fault or no power applied
1 Flash: Ignition failure (control in one-hour lockout)
2 Flashes: Pressure switch fault, fails open (switch is
stuck open)
3 Flashes: Limit switch open (main or auxiliary)
4 Flashes: Pressure switch fault, fails closed (switch is
stuck closed)
A yellow LED indicates flame status
Steady on: Normal flame is sensed
Flashes: As flame weakens, frequency of LED flashes
increases

hope this is helpful.

Dec 21, 2010 | Ruud Central System Air Conditioner

1 Answer

Bryant Plus 90 Furnace - Blower works fine and intermittently blows warm air but will not bring house to temp set on thermostat... Get a 1-3 error (one blink and then 3 quick blinks of the LED) Thanks


PRSSURE, DRAFT SAFGUARD, AUX-LIMIT SWITCH(WHEN USED)OR BLOCKED VENT
SWITCH(WHEN USED) DID NOT CLOSE OR REOPENED (DOWNFLOWONLY)
If open longer than five minutes, inducer shuts off for 15 minutes
before retry.
Check for:
* proper vent sizing
* defective inducer motor
* restricted vent
* excessive wind
* low inducer voltage(115VAC)
* defective blower motor or capacitor
* defective pressure switch
* inadequate combusstion air supply
* disconnected or obstructed pressure tubing
If it opens after trial for ignition period, blower will come on for
90 sec. recycle delay.
Check your air filter for blockage, check pressure switch for a buildup of moisture. Make sure your inducer motor is turning and creating a vacuum to the pressure switch. Make sure all venting is clear and free of water or debris. Make sure there is no water in inducer motor and all drains are draining.

Jan 28, 2010 | Heating & Cooling

1 Answer

Meaning of rudd furnace trouble codes


Error Codes
A green LED indicates system faults
Steady On: System OK
Steady OFF: Board control fault or no power applied
1 Flash: Ignition failure (control in one-hour lockout)
2 Flashes: Pressure switch fault, fails open (switch is
stuck open)
3 Flashes: Limit switch open (main or auxiliary)
4 Flashes: Pressure switch fault, fails closed (switch is
stuck closed)
A yellow LED indicates flame status
Steady on: Normal flame is sensed
Flashes: As flame weakens, frequency of LED flashes
increases

Dec 12, 2009 | Heating & Cooling

2 Answers

Furnace code light flashes 3 times /pressure switch stuck open


Check the intake and exhaust plumbing for any obstructions. I had same issue, turned out to be ice in the air intake plumbing on outside of house. This may be the problem. The pressure switch can be tested by pulling hose from purge motor that goes to switch and applying a small amount of suction. The switch should make a clicking sound.

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