Question about Heating & Cooling

1 Answer

Heater/AC outside unit.....Goodman PGB042-100-1 Unit will not run.

Started blowing 5 amp fuse on control board, now unit will not run and fuse is good.

Posted by on

  • 5 more comments 
  • Earl Parker
    Earl Parker Mar 21, 2014

    I have no 24 volt present on transformer secondary. 240 is present on primary but when I remove power and check continuity on primary it is showing to be open. I have continuity on secondary and no shorts from primary to secondary.

  • if you got reading voltage on primary and no reading on secondary that your transformer is defected opened or shorted winding

  • if this happen only when you turn on ac you must check the 2 wires to outside unit to make its does crossed. if this 2 wires is not crossing that mean your contactor at out unit is shorted caused your transformer to burn up.

  • good luck

  • p.s. showing continuity could mean it burned and shorted together

  • Earl Parker
    Earl Parker Mar 21, 2014

    Replaced transformer and unit ran after i turned thermostat up started getting hot so i turned thermostat down and unit cycled off but now it will not run in either cool or heat modes.

  • At thermostat take it loose jump wires R to Y and G your AC should come on. Jump R to W your heater should come on. if you'v done this and it work as I described then you have a defected thermostat

×

1 Answer

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    MVP:

    An expert that gotĀ 5 achievements.

    Governor:

    An expert whose answer gotĀ voted for 20 times.

    Hot-Shot:

    An expert who has answered 20 questions.

  • Expert
  • 148 Answers

With new fuse in you need to check if there is 24v from transformer and at the 2 control wires that go to outside unit.

Posted on Mar 19, 2014

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

Brand new furnace wont start its a aruf 14 electric air handler with a 10 amp heater coil


the 3 amp fuse protects low voltage side of transformer. if it's blowing on a call for cooling wire pair going to outside unit bad or contactor in outside unit.

Nov 18, 2013 | Goodman Heating & Cooling

1 Answer

Fuse blow each time I turn on air check for


disconnect the thernostat wires from the control board. Put a jumper wire between R & G put door back on and turn on power. Blower motor
should run, if it blows the fuse then you have a direct short between R &
G at the board. Do this with R and W(heat) and R & Y(cool).

By disconnecting the thermostat wires and reinserting them make sure that they do not touch when inserted into each terminal. If it still blows
that little 3amp fuse when jumpering between each sequence as mentioned above, then I think your board is bad. When Jumpering out the Y terminal you will have to have the AC wires still hooked up. If it
blows the fuse in that sequence. Disconnect the wires out at the condensor.

You mat have a bad contactor at the outdoor unit.

Jul 16, 2010 | Goodman GMS90703BXA Heater

1 Answer

Goodman Furnace not working again????


You can try the 4 amp fuse thats on the inside of the unit, on the board, if you feel confident that there is 120v going to the unit. Having issues with the board can be a bad sign and not knowing what they have already done to it kinda leaves me in the dark, but you can try that and if the fuse blows again, you have other problems going on that they will have to trouble-shoot. The unit is still under the 5 year warranty so it might be best to try and get another board all together, you should only have to pay labor cost. It could be the transformer too, you can check it with a meter to see if your getting the 120v going in and 24v going out if capable. Hope this helps some and good luck!

May 24, 2010 | Goodman GMS90703BXA Heater

2 Answers

5 amp fuse continues to blow on control board for both AC and heat. External compressor unit with air handler and gas furnace in attic.


You have a short on the 24 volt side of the unit. Check the thermostat wire for signs of pinching or direct short.

Oct 17, 2009 | Goodman GMS90703BXA Heater

1 Answer

Goodman GMP75... keeps blowing fuses only in A/C mode. Only when I connect yellow wire from thermostat to line going to condenser contactor (24V side).


Are you talking about the small 3 or 5 amp fuse in the furnace? If you are then the control voltage circuit to the condenser is shorted, Maybe dogs or rodents chewing it or the insulation is cut by a sharp piece of metal. Sometimes the contactor will go bad and cause the small fuse in furnace to blow. Look for the simple things first, like control wires shorted. Make sure the yellow wire from the thermostat goes to the outside unit and not to the common.

Jun 30, 2009 | Goodman GMS90703BXA Heater

2 Answers

My Goodman Mfg AC unit is blowing fuses on the control board inside the blower/air handler unit. This fuse supplies 24V to the outside compressor unit. Originally, there was a 3 A fuse in it. I replaced it...


Actually you might get a ohm meter the reads to at least 40 megaohms and check the coil on the solenoid valve as well as the coil on the contactor. That would determine which coil ic failing. They should read out above 40 megaohms.

Jul 04, 2008 | Heating & Cooling

2 Answers

Goodman Furnace/AC unit not working 3a fuse blows even after replacement. once thermostat is turned on and clicks to start ac unit the fuse blows


3 amp is standard.the fuse is blowing to protect the transformer.It is telling you that there is a short in the low voltage wiring.Goodman also had an issue with the coil shorting on the contactor.To prevent damage.....i'd call a pro.It should be a fairly simple repair.

Jul 03, 2008 | Goodman CLQ36AR49 Air Conditioner

2 Answers

Keeps blowing the fuse.


In more rare scenarios the 24v activated fan relay that is soldered to the circuit board can cause this same problem. I agree with Therinnaiguy, If the fuse is blown 90+% of the time there is a short in the 24 volt control system.

Jun 09, 2008 | Goodman GMS90703BXA Heater

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

Related Topics:

57 people viewed this question

Ask a Question

Usually answered in minutes!

Top Heating & Cooling Experts

paulcarew

Level 3 Expert

2454 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...