Question about Heating & Cooling

1 Answer

My Goodman GMNT 120-5 furnace is not coming on.

I don't feel any heat on. So I tried to turn the heat up however the furnace is not coming on. I tried lighting it myself but I'm not sure how.

Posted by on

Ad

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    Superstar:

    An expert that got 20 achievements.

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

  • Master
  • 4,654 Answers

First I believe you will need to begin by reading this=>

Goodman GMNT120-5 Service Instructions
You will need Adobe Acrobat Reader to view these documents. The Adobe Acrobat Reader is available as a free download.
If you have questions please let me know, Sea Breeze

Posted on Nov 03, 2012

Ad

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

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

Ad
WebTeligent
  • 42 Answers

SOURCE: No heat, trouble shooting light has continious flash.

There is a vacuum sensor on most units tied from the exhaust gas fan to the sensor. Does the unit try to start? If the unit's exhaust fails to pull the switch it will turn off after about 30-45 sec after starting. "IT" thinks it's not exhausting and stops to keep from overheating. Do you have this exhaust fan and rubber hose to sensor? Can you see if that fan is turning on start?

Posted on Nov 10, 2007

  • 2 Answers

SOURCE: No heat, trouble shooting light has continious flash.

I am not familliar with that proticular model but continous flash could be reversed polarity. That is where I would start.

Posted on Nov 26, 2008

  • 69 Answers

SOURCE: Furnace start buts shuts off

It sounds like you have an obstruction in the exhaust vent. Thats why when you bybass the pressure switch it runs ok. Steve

Posted on Dec 21, 2008

aries_67
  • 1 Answer

SOURCE: 1993 goodman status light 4 times blinking

I have a goodman GMP075-3 that won't turn on. I think it is the pressure switch since I do not have a vent blockage. What is a venter and where can I find it??

Posted on Dec 30, 2008

Therinnaiguy
  • 1420 Answers

SOURCE: Goodman GDT070 furnace pressure swich problem.

Inspect both the intake and exhaust pipes for blockage or debris. Inspect the small tubes that go from your combustion fan to the pressure switch and the tube that goes from the fan to the condensate drain. They all should be clean and dry. Inspect the combustion fan to see if it spins without it scraping on the housing or it may be filled with water or debris. Last, check the air filter and clean or replace.

Posted on Oct 11, 2009

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

Goodman furnace GMT115-5B Turn fan to on on


Bypass the tstat first but that's where I'd be leaning.

Aug 14, 2017 | Goodman GMS90703BXA Heater

1 Answer

Goodman Natural Gas Furnace Model GMPO75-3 will not come on


Check to see if you are getting 24 volts at the w-c terminals at the control board of the furnace when the thermostat if calling for heat. Also check if you are getting 120 volts at the L1 terminal and nuetral at the control board, let me know what you find

Dec 28, 2010 | Goodman GMS90703BXA Heater

1 Answer

Goodman GMNT furnace - should I be able to get remove the access control panel easily?


Check the front of the unit and you should see 4 5/16 screws . I believe the outer 2 screws undo the top cover .Remove it first, and remove the inner 2 screws, and the lower door will come off. Good luck. Vern

Feb 21, 2010 | Goodman GMS90703BXA Heater

2 Answers

I have a goodman gmnt 100 b furnace 2 stage when the gave valve turns on and floods the heat exchanger with flame then the squirl cage fan turns on and i loose the the flame


If you are getting flame distortion when the blower comes on it usually means a cracked heat exchanger which can lead to carbon monoxide, get your furnace checked by a qualified tech..

Jan 31, 2010 | Goodman Furnace Draft Inducer Blower ...

2 Answers

Furnace lights fan comes on then fan goes off furnace stays light until overtemp takes it out code flashes 4


Have some one hold the bottom door safety switch, turn furnace on wait until heating fan relay clicks, and check at terminal (Heat) & terminal (neutral or where all the white wires are located on the control board) for 115 volts to 120 volts. If voltage is present replace blower motor, if voltage drops out while running then replace control board.Turn power off to furnace, open bottom door and feel blower motor with hand, if motor is real hot replace motor. you can not oil this type of motor, it has to be replaced along with the compacitor. Good luck.

Jan 22, 2010 | Goodman Furnace Draft Inducer Blower ...

1 Answer

Goodman furnace\ blower comes on,unasked


Sounds like the fan switch on the furnace is set to low. Turn power off to furnace, take door off of furnace look for a fan switch, it may be a fan - limit together. The limit settings should be approximately 160° to 200°, and the fan settings should be about 100° to 140° set it to 120° it it's already set there then you probably need to replace it.

Aug 03, 2009 | Heating & Cooling

2 Answers

Goodman GMNT furnace goes into 'lock-out'.


The brain has to have constant verification of flame. If the burner ground is corroded then you will get the condition you prescribe.

Jan 08, 2009 | Heating & Cooling

1 Answer

I have a goodman GMNT gas furnace Propane it lights off I have a blue flame for about 3 seconds I hear a click on the circuit board and the flame goes out this is doing it constantly. could you please help...


Hi!!! If the flame turns on then off and on then you should change your flame sensor on the gas furnace..YEs flame sensor is shorted..The flame sensor is located by the valve burners it has one wire and is white..Good luck..

Jan 03, 2009 | Heating & Cooling

1 Answer

Furnace start buts shuts off


It sounds like you have an obstruction in the exhaust vent. Thats why when you bybass the pressure switch it runs ok. Steve

Dec 15, 2008 | Goodman GMS90703BXA Heater

1 Answer

Support on changing out the heat exchanger on gmnt 080


1st, take a picture of where each wire goes to. Look in the owners manual for an exploded view of how it goes together. The heat exchanger most likely comes out from the front of the furnace. You will have to remove and reinstall every componant inside the furnace to get it out. Suggestion, replace the whole furnace. It will be cheaper.

Sep 18, 2008 | Goodman Heating & Cooling

Not finding what you are looking for?
Heating & Cooling Logo

Related Topics:

170 people viewed this question

Ask a Question

Usually answered in minutes!

Top Heating & Cooling Experts

paulcarew

Level 3 Expert

2519 Answers

Dan Webster
Dan Webster

Level 3 Expert

8220 Answers

Donni Steen

Level 3 Expert

659 Answers

Are you a Heating and Cooling Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...