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Bryant 345 mav Furnace motor runs all the time the the fan is in auto mod the igniter does not come on the code is 21

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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

22yooper
  • 828 Answers

SOURCE: Carrier Weathermaker gas 8000 will not ignite

Your hot surface igniter may be bad. It may be cracked which would prevent it from starting the burner flame.

Posted on May 22, 2008

wbwill
  • 68 Answers

SOURCE: Carrier Weathermaker SX model 58SX060-CC Blower runs all the time

Remove all power from the furnace, it is likely the brain in the furnace is need of being reset, from the battery replacement, why did you change the battery, was there an indicator telling you to change it?

Many times just removing all the power to the furnace will do the trick with a reset, if not let me know and we will go from there, but it sounds like the main brain is confused or bad, more likely confused, so try the power removed first.

Than let me know wbwill@sbcglobal.net

Posted on Nov 22, 2008

  • 96 Answers

SOURCE: Induced draft motor

The inducer motor is what takes the cabonmonoxide out of the house from the unit and should not be bypassed

Posted on Mar 08, 2009

electrodynam
  • 35 Answers

SOURCE: bryant furnance clicking, won't fire

try checking the pressure sensing switch,it has a tube that should run somewhere close to the inducer fan.sometimes this hose fills with liquids,and makes the units act funny.I don't know if you have a condensing unit or what.the furnace wont try to light if it cant tell the inducer motor is running.any induced draft unit will work this way.you can also do a temp. bypass of the pressure switch to make sure the contacts on it are closing just be sure your inducer fan is running,and you cant leave it like that its just a test.that is a safety feature you really need.

Posted on Mar 19, 2009

  • 1 Answer

SOURCE: Why Wont My Bryant Furnace Stay Running

You have a dirty flame sensor, it needs to be replaced

Posted on May 03, 2009

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1 Answer

Model 393 Bryant furnace fan or motor makes noise when first starting. Then it's quiet.


https://www.repairclinic.com/PartDetail/Bryant-Furnace-Dual-Run-Capacitor/P2914553RS/2386586?ss=a36b380&mr=0

That part is probably going bad. The motor uses it to get moving and when it fails then the motor wont start, makes buzzing or humming noise due to phase loss.

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Bryant gas furnace does the blower motor have to work for the heat exchanger to light up both are not working


It depends....on if you are talking about a small blower in the front of the furnace or the indoor fan motor. If your furnace is an 80% effficiency rating or above it will have a 'combustion air' fan....that will be a small on in front of the furnace in the vestibule under the front cover. If you have that motor and that is the one you are asking about...then YES it has to be running prior to the furnace igniting the gas.

If you are talking about the indoor fan motor for circulating air into your ducts, then NO it does not have to be running in order for the furnace to ignite. But it WILL have to run to remove the heat from the heat exchanger after it ignites or it willl overheat and shut off on high limit.

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1 Answer

Wires don't match the new thermostat posts. The wires from the furnace are Red,Blue black and white The posts in new thermostat are B O G Y not used R and Rc Can't figure which to put


The wire colors are for the following functions ......red - 24 volts white - heat yellow - AC green/blue - blower (fan) red is connected to the R with a jumper between R and Rc What type of furnace/heat do you have ???? Electric. oil, gas .Forced hot air, baseboard, steam, heat pump, or ?????? Different systems use different connections and need a specific thermostat for that application !!!

Dec 13, 2014 | Heating & Cooling

1 Answer

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need to replace the motor bearings are going out of motor.

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1 Answer

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have to know the model and serial of the furnace.
locate code list usually inside or on the back of a door.
Operation sequence= call for heat--inducer blower motor--makes pressure switch--signals board to bring on hsi--after a set time gas valve opens and you have ignition--main blower motor comes on after a set time

Feb 12, 2014 | Heating & Cooling

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Feb 11, 2014 | Heating & Cooling

1 Answer

Bryant programmable thermostat doesnt keep the temp have to put it on fan instead of auto


My guess is that you have gas heat. If this is the case, sounds to me like your main control board or depending on age of furnace, fan controller is not working. With gas furnaces, it utilizes 2 fan speeds. High for cooling, & Low for heating. Your thermostat only controls the High speed - switches when you turn your fan on & when there is a call for cooling. The only other thing I can think of is it is possible that the Low speed windings on the blower motor are open causing it to not turn on. Most motors have 3 to 4 speeds & only 2 are used. Switch the heat motor wires in the furnace (on the control board) with one that is on a spare terminal.

Feb 21, 2013 | Bryant Cube Series 1 Stage Heat/ 1 Stage...

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


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Jan 31, 2011 | Heating & Cooling

1 Answer

Bryant furnance clicking, won't fire


try checking the pressure sensing switch,it has a tube that should run somewhere close to the inducer fan.sometimes this hose fills with liquids,and makes the units act funny.I don't know if you have a condensing unit or what.the furnace wont try to light if it cant tell the inducer motor is running.any induced draft unit will work this way.you can also do a temp. bypass of the pressure switch to make sure the contacts on it are closing just be sure your inducer fan is running,and you cant leave it like that its just a test.that is a safety feature you really need.

Mar 11, 2009 | Heating & Cooling

2 Answers

Why Wont My Bryant Furnace Stay Running


Look on the blower door panel in the wiring diagram there should be a flash code but it sounds like the flame sensor is not picking up the flame and you may be able to clean it

Oct 28, 2008 | Heating & Cooling

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