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GETTING ERROR "PRESSURE VALVE OPEN" ON A NORDYNE M1MB FURNACE

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6 Suggested Answers

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

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gear001
  • 59 Answers

SOURCE: Troubleshooting Nordyne Furnace. Flashing LED

Your induce fan motor is burnt out or the senor is out. If the little fan is working its just the senor. Your going to need a repairman to find the senor or motor for you. You can replace the senor but I wouldnt recommend replacing the motor. www.fastacservice.com

Posted on Oct 14, 2009

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AZBen
  • 193 Answers

SOURCE: We were shipped a Honeywell gas valve VR8205S2890

Is there a millivolt safety on this model that must be connected to the hot surface ignitor?

Posted on Dec 12, 2009

  • 2522 Answers

SOURCE: I have a Nordyne furnace, which will not start.

a new pressure switch check the hoses to the switch are not spilt you could try blowing down the tudes see if switch is clear , or change switch

Posted on Oct 22, 2010

  • 1033 Answers

SOURCE: I have a Honeywell furnace model #M1MB 070A BW.

Hello, first turn off power to the Furnace, then remove igniter from bracket and unplug molex connector. Then take the igniter to a Hvac supply store and get new one, reinstall it into bracket plug into molex connector and turn furnace back on.

Posted on Mar 05, 2011

  • 1033 Answers

SOURCE: Gas furnace with Honeywell smart valve code error

Hello, it sounds like your Furnace might be shutting off due to your high limit switch.A limit switch will open when the furnace overheats due to low airflow, . check air filter, clean blower wheel, and check to make sure the blower wheel is running at proper speed and not dragging sometimes cause by a weak capacitor. Anything that restricts airflow will cause a limit switch to open.

Posted on Mar 08, 2011

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1 Answer

Nordyne mobile home furnace will not ignite. I REALLY need an answer ASAP


Turn down room thermostat switch power off to unit turn power back on turn up stat see if this resets unit .


Check to see if pilot is on . check to see if you have gas to you unit if not then it could be the reg on the tank .

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My nordyne m1 mb 056a bw heater isnt working...a red light flashes twice, which means "Pressure switch is open"...how do i fix it?


First, I am assuming that this is a residential gas fired furnace. 1. The first thing that will happen once the furnace gets a call for heat is the small draft inducer motor will come on. 2. The pressure switch should close. If the switch is not closing, here is a list of possible reasons: 1. The draft inducer motor is not running. 2. There is a restriction in the flue or heat exchanger. 3. The tubing from the pressure switch is not connected or has a leak. 4. The pressure switch may be defective or stuck open. Note: this is not an exhaustive list, but should cover the most common causes. Also, you may have to unplug the furnace and then plug it back in before it will try to come on. It may be locked out on the control board because of the pressure switch fault. I hope this helps!

Nov 30, 2015 | Heating & Cooling

1 Answer

Furnace will not stay lite, flashes pressure valve closed


Too much or too little pressure. Check for air blockage or an ice blockage inside or outside the house. Were flames good color when lit?

Nov 12, 2014 | AO Smith Miller / LSI / Home / Nordyne...

1 Answer

FURNACE WONT FIRE UP ,LIGHT INDICATOR SAYS PRESSURE SWITCH OPEN W/ INDUCER FAN ON


PROBABLY MOISTURE IN PRESSURE SWITCH OR SNOW OR ICE BUILD UP NEAR VENT TERMINATION . PROBABLY JUST A BAD PRESSURE SWITCH

Dec 17, 2013 | AO Smith Miller / LSI / Home / Nordyne...

1 Answer

Model m1mc 090a bw furnace pressure switch open. inducer motor is pulling .45 w.c . the intake pipe above inducer is only pulling .1 w.c. . checked for venting and intake blockages found non. removed...


did you check the hose from the inducer to the pressure switch? HAVE you unplugged the unit from the wall outlet to reset the board? DO you have a voltmeter? If you do you can run voltage across the switch and if you get 24 volts you are open.

Oct 23, 2013 | Coleman Intertherm Nordyne Miller Furnace...

1 Answer

Just replaced pressure switch on intertherm m1mb gas furnace but still codes "pressure switch open"


CHECK FLUE FOR OBSTUCTIONS AS WELL AS COMBUSTION AIR INTAKE FIRST. THEN CHECK TO SEE IF THE FURNACE DRAIN IS OPEN AND NOT CLOGGED [ONLY IF YOUR FURNACE IS A CONDENSATING HIGH EFFICIENCY MODEL, typically the flue pipe will be 2 or 3 inch pvc pipe] over the years more often than not, it is an obstruction or poor drainage which will not prove the pressure switch to allow the burner to ignite. in rare cases the furnace control board could be bad as well.TRY DISCONNECTING FLUE AND COMB. AIR AT FURNACE JUST TO SEE IF FURNACE WILL IGNITE. HOPE THIS HELPS!!!!!!

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1 Answer

I have a Honeywell furnace model #M1MB 070A BW. How do I replace the igniter?


Hello, first turn off power to the Furnace, then remove igniter from bracket and unplug molex connector. Then take the igniter to a Hvac supply store and get new one, reinstall it into bracket plug into molex connector and turn furnace back on.

Mar 05, 2011 | Honeywell Heating & Cooling

1 Answer

I have a Nordyne furnace, which will not start. The indicator light on electrical circuit panel indicates a open pressure valve. What do I need to fix it? Nick


a new pressure switch check the hoses to the switch are not spilt you could try blowing down the tudes see if switch is clear , or change switch

Oct 22, 2010 | Heating & Cooling

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