Question about Goodman GMS90703BXA Heater

1 Answer

Goodman GMP100-4

Upper Fan turns on, this is the vent fan I figure, Ignitor turns on , Gas enters and fires for about 30 seconds, the blower fan does not come on at all. then the bunner stops. I presume this is because the blower fan never turns on. it repeats this process about every 5 minutes.

Posted by on

  • 1 more comment 
  • gregwayman Feb 12, 2009

    I forgot to mention that this unit runs the central a/c also. I lowered the setting on the thermostat to 60 degress ( the house is 65 degress right now ) and turn it to cool and the blower fan doesnt start up then either. I presume maybe the blower motors is bad. Is this common? The unit is 9 years old. What should I check before I go buy a new blower motor. Thank you

  • gregwayman Feb 12, 2009

    I forgot to mention that this unit runs the central a/c also. I lowered the setting on the thermostat to 60 degress ( the house is 65 degress right now ) and turn it to cool and the blower fan doesnt start up then either. I presume maybe the blower motors is bad. Is this common? The unit is 9 years old. What should I check before I go buy a new blower motor. Thank you

  • gregwayman Feb 13, 2009

    clarkco2002 thank you so much for you help.

    I decieded to try turning the furnace on one more time to see if I would get the same results as yesterday, before I replaced the blower relay or blower motor. This time the furnace and flames stayed on about 30 seconds longer so the blower motor did turn on, but then shut right off. I then figured it was a bad or dirty flame sensor as you had sugested. I took some sand paper and cleaned the flame sensor and the furnance has been working since.



    Thanks again !!!! I helping out more neightbor fix her furnace. She is recently divorced and her and her 4 young children spent the night before in their home at 58 degress

×

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Vice President:

    An expert whose answer got voted for 100 times.

  • Master
  • 360 Answers

My guess would be a flame/temperature sensor

Posted on Feb 12, 2009

  • clarkco2002 Feb 12, 2009

    locate and test the blower relay, ensure it is getting power to engage as well as power for the blower.

    let me know what you find


×

1 Suggested Answer

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

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

1 Answer

Model #GMPN100-4 Goodman furnace. Vent fan


The sequence of events for furnace operation is -

Fan purge for 30-45 seconds. During this time, a pressure switch is actuated by the running of the purge fan, proving the control board the purge fan is running.

After purge and purge prove, the hot surface ignition and or spark begins. After a few second delay, the gas valve will open. The control board then monitors for flame prove through another sensor located near the burners. If there is no flame within 3-5 seconds, the gas valve closes. It will repeat this process, usually 3 times, before it shuts the system down, which requires a power down of the system to reset.

I have seen trash get into the hose between the purge blower and the purge switch. But you could be having other problems.

Dec 17, 2009 | Goodman Heating & Cooling

2 Answers

Have a Goodman GMT070-3B which the vent motor seems to be sticking. I took apart and cleaned the brushes and reassembled. The furnace will come on only after what seems like the vent motor comes up to...


The whole assembly must be replaced.

The sequence of operation is -

Combustion fan purges the heat exchanger. A pressure switch verifies combustion air fan is running. Usually a 30-45 second purge before the hot surface ignitor glows, or the spark ignition starts.

Gas valve opens after 10-15 seconds and main burners light. Control board monitors for flame and shuts gas valve after 2-3 seconds if main burner does not light.

If burner does not light, some boards repeat this for 3 tries, then locks out and is reset by cycling power.

Air blower comes on after another 30-45 seconds after main burner ignition.

Times may vary based on the specific controller board. A flow chart and timing sequence should be located somewhere on the unit, usually in the fan compartment.

Dec 16, 2009 | Goodman GMS90703BXA Heater

1 Answer

Goodman GMT070-3A heater. When heater is turned


look for flashing code thru blower door peep hole aftter it shuts down and let me know the amount of flashes

Dec 03, 2009 | Heating & Cooling

2 Answers

The heater is blowing cool air. The furnace blower keeps running and something ignites and then goes out immediately. any suggestions?


Clean or replace the thermo couple.

It must detect a flame a few seconds after the main gas valve opens or it shuts it down. Since you are hearing the burners fire up the ignitor is working and all the other safety circuits are working to allow the furnace to fire up.

The thermocouple is a small silver tube that protrudes into the flame of the main burners, remove it and scrub with scotchbrite pad or anything mildly abrasive. You just want to remove carbon and corrosion build up, re-install and see if it fires up.

I have two Goodman furnaces and if you are to maintain them your self you should keep on hand a thermocouple and a new ceramic ignitor. They will inevitably fail on the coldest weekend of the year and the only place to get them will be from a service company with a emergency service call ...$180.00 VS $60.00 off ebay or internet sales.

Also if your power vent fan is making ANY noise it is on its last legs and buying on in advance online will save you about $80.00 over the loca ldealers price......been there done that

Oct 24, 2009 | Goodman GMS90703BXA Heater

1 Answer

Goodman forced air gas furnace not firing


if your power vent moter is not running you should not have have glowing ignitor.Frist the vent moter must close an air prove switch in series with the idnitor .seems you have a stuck air prove switch.Its the one with a hose attached

Apr 04, 2009 | Heating & Cooling

1 Answer

Goodman Furnace GMP050-03


you either need an ignitor...even though it gets red it may not get hot enough...just repaired one doing the samething yours is doing same model number as yours. If that is not the problem the only other thing it could be is the circuit board

Dec 08, 2008 | Goodman GDS80904BNA Open Flame Heater

1 Answer

Goodman U-30 Furnace


observe the sequence of operation. stat calls for heat and sends a signal, to furnace. check for 24 volts to common and white wire at furnace.first the forced draft motor starts and should have 120 volts to the plug it attaches to. after forced draft motor starts the pressure or vacuum switch closes should show no 24 volt when checked across terminals. shortly after the ignitor glows and shortly after click the main gas valve opens and main burners fire. shortly after the indoor fan comes on and hot air blows into the ductwork. follow the chain of events to see what doesnt happen and it is a clue to whats broke. maybe start by switching fan switch on stat to on. if fan comes on you have high and low voltage thereby eliminating the stat power and transformer as a problem. if you can see the ignitor look for it to be cracked . look close dont touch any part of it .it is powered by 120 volts when energized from board. dont forget when you take the door off there is no power to the furnace so be prepared to tape the safety switch closed when you are diagnosing.

Oct 24, 2008 | Heating & Cooling

1 Answer

Goodman furnace


Check the roll out switch(s) and the lock out switches. They are a small disc looking about the size of a nickle, with with 2 wires attached on them. There will be a re-set button in the middle that resembles a small peg. Push this in to re-set. As the glow coil shorted out, the fuse on the control board may have blown. On the newer furnaces find the main board and look for a car type fuse. If blown, replace. You also have the symptoms of a bad limit switch, by the clicking noise (the heat fan relay) and the blower fan running instantlly.

Jan 05, 2008 | Heating & Cooling

3 Answers

Goodman Heater Blower Not Coming ON


I am experiencing similar issues..the blower you hear is the vent blower probably..mine does the same..it vents the unburnt gas out of the vent pipe thru the roof. you should be able to run the fan manually from the thermostat to at least check and see of the blower works atl..at least it will let you know if the blower motor is ok..I have had to replace the control board once and I think it is the culprit again..mine is sooooo erratic.

Dec 10, 2007 | Goodman GMS90703BXA Heater

Not finding what you are looking for?
Goodman GMS90703BXA Heater Logo

Related Topics:

408 people viewed this question

Ask a Question

Usually answered in minutes!

Top Goodman Heating & Cooling Experts

Dan Webster
Dan Webster

Level 3 Expert

8205 Answers

paulcarew

Level 3 Expert

2097 Answers

Brandon Berry
Brandon Berry

Level 2 Expert

407 Answers

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

Answer questions

Manuals & User Guides

Loading...