20 Most Recent Goodman HDC24WMC24 Air Conditioner Questions & Answers

Hello, usually if the outdoor unit runs nonstop the contactor coil is the problem as it is stuck. Replacing it will fix the problem.

Hello Margaret,

I understand that you are having a problen with your air conditioner. I would love to help you however, I need a little more information from you about what is not working. Is the unit just not blowing cool air? Is the outside unit powered on (fan running, etc)? Is the inside unit running? these are a few of the questions that I need you to answers so that I may be able to start the process of helping you.

Please post your answers back to this thread so that I can assist you with your problem.

Thank you for choosing FixYa.com

I assume that is a 240 volt unit. If you have a volt meter, check for power across the contactor . If it is a 240 volt unit you should get 240volts on both sides of the contactor. If you DO have voltage across the contactor (after it closes) you need to try and get to the compressor where the wires connect to it. There should also be 240 volts at the compressor terminals marked "C" and "R". If you have power at the compressor between C and R and the compressor is still not even trying to start, the compressor windings are open. Here is really what any tech will need to know to really help you:
(1) Is the fan motor running?
(2) what voltage is the unit?
(3) is the compressor humming or trying to start?
(4) do you have the proper voltage at the unit?

If you can answer these questions and you want to email me, do so and I will step you thru it. Be very careful , as you are dealing with high voltage.

Check the capacitor. (The thing that looks like a big battery). If it is bulged out on the sides it is shorted. The compressor could be "locked" up which is the worse case.

Is the hole on the outside unit. If may be to stop the condensate drain pipe from freezing on the elbow. Google Goodman (model) installation manual https://www.google.com/search?q=%E2%80%8BGoodman+(model)+installation+manual ..

Probably the cap or lost a leg

Check here...page 8https://www.theacoutlet.com/documents/Installation-Guide-Goodman-MBVC.pdfwoops you"ll have to copy and paste the link ):

Maybe ck here... https://www.youtube.com/watch?v=QvRur9MP3Cg

no. it could be the breaker is getting weak or you have problem with unit.

thermostat bad or wiring

Dirty condenser or slow or not running condenser fan. What are the pressures?

https://hvac-boss.com/troubleshooting/goodman-furnace-error-codes/ According to this page, you can usually fix this 4 blink diagnosed problem by changing the air filter or tightening wiring (which it has a cautionary warning about tightening such too much) and checking the flue for blockage. The furnace has activated the primary open limit circuit. Here is a troubleshooting page about the Goodman just blowing cold air: https://temperaturemaster.com/goodman-furnace-troubleshooting/#Goodman_Furnace_Blowing_Cold_Air Poor air flow in the Goodman caused by blockages can result in the tripping of the rollover switches which would cause it to blow cold air. That is a safety measure. You don't want gas furnaces burning with insufficient air. Think carbon monoxide. Besides the air filter, the flame sensor or the burner could be dirty. The idea of trying to DYI that cleaning job is rather off putting. I hope changing the filter would work. I trust it is not a fuse in the pilot flame sensor circuit blown. A repairman has the voltage testers for checking the electronics involved. I can empathize with this. My furnace, another brand, went out recently. The repair man didn't know why it went out but simply adjusted a handle controlling gas flow to a position slightly different from what was recommended and it worked. All for $200. https://www.repairclinic.com/RepairHelp/Furnace-Repair/36-377--/Goodman-Furnace-Troubleshooting https://www.youtube.com/watch?v=zO1jKqwXu8s https://www.goodmanmfg.com/products/gas-furnaces

Power it off for 5 minutes, and then power it back on. Some ideas in the link. https://www.google.com/search?q=Goodman+furnace+blowing+cold+air ..

Obvious that the unit isn't getting gas to the ignitor. To receive gas to the ignitor, there is a gas valve located upstream of the burners. Have a friend turn on the heat while you are up close to the furnace. Once the ignitor gets hot, there will be an audible "click" at the gas valve when the low voltage controls call for the gas valve to open to supply gas to the burners. Listen for it. If you hear a click, and the furnace still isn't firing, you need to check to see if someone has closed the gas shut off supply valves located on the gas line. If all the shut off valves are open, you need to verify you have gas pressure in front of the gas regulator. If you verify have pressure on the upstream side of the regulator, you will need to verify there is also pressure downstream of the regulator. If there is gas pressure upstream but none downstream, replace the regulator. If you have pressure downstream of the regulator, and the gas valve clicks, but furnace doesn't light, replace the gas valve. LP has higher pressure than natural gas, and is dangerous. LP is heavier than air and will sink to the floor or lowest area. One static electricity spark is all it takes and an explosion can occur.