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I have a Intertherm model MGH-075-ABWN-05 and the A/C stopped working. someelectrical problem i'm guess.neither the blower fan nor the outside unit are running at all

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Check the drain line for a float switch. Remove float and check for water. Do not leave float out, you must clear the drain. Good Luck

Posted on May 10, 2017

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1 Answer

Intertherm MGHA-070ABFC-05 will not run/cool


Multiple problems. Eliminate thermostat first. Remove face from wall and turn on breaker. If fan still runs you have a bad board or bad relay. If fan outside is running compressor should be too. These operate on same contactor. Verify you are getting 24 volts to coil side of contactor. If odf stops working and contactor remains pulled in you have a bad motor. If odf motor stops working the compressor will shut off due to overheating.

Jun 07, 2016 | Intertherm Heating & Cooling

1 Answer

Got Intertherm Model # MGH-055AB.. It lights for ap 10 seconds goes out then goes out... Over and over again does not stay lit long enough for the blower to start running?? ANY IDEAS HOW TO FIX IT ?


You have to try resetting the system. First turn the breaker off for the condenser and wait about 20 seconds. After you turn it back on the system should reset. If the s3 comes on then you have an issue with the unit and i would get a professional to help.

Air Conditioning Boca Raton

Apr 10, 2015 | Intertherm Heating & Cooling

1 Answer

Why is my Intertherm P681S unit getting hot and the fan is is stopping?


Is the outside running? Is the outside fan running? Probably what is happening the fan outside quits running and the compressor gets hot and goes into thermal overload. need to check to make sure the outside fan is running.

Aug 30, 2014 | Heating & Cooling

1 Answer

Fan wont kick on


a bad fan motor they will go bad is the blower on your inside unit or the condenser assembly outside either could be a bad motor

Jul 13, 2012 | Intertherm Heating & Cooling

1 Answer

Intertherm Air Conditioner S3BA-042KA compressor and fan not working (has power)


It sounds like that unit is connected to a "power saving load controller" device from the power company. The power company can turn your unit on & off with a radio signal. If you manually activated contactor and unit ran. I would bet that the power company's device or the wiring connecting it is where the problem lies. Call the power company and have them check their device. If they tell you that the device has been tested remotely and is working fine. Explain to them that you can activate your unit manually and it works fine. They should not charge you to come out. Those "load controller devices" have a pretty good longevity record.

Jul 11, 2012 | Intertherm Heating & Cooling

2 Answers

I have an old Intertherm gas-fired furnace, Model MGH-055AB which ceased operating last night. It was quite warm when I arrived home, and when I set the heat up a little, began to hum, but the fan would...


Tom P's answer is generally correct: The motor start capacitor is usually not the problem. However, in some cases, particularly on older furnaces, where there were capacitors of certain make and production run will prematurely fail. This happened in March on a mobile home HVAC unit where both the blower fan and condenser fan motor capacitors failed open circuit. Both caps were of the same Mfg, and production lot.
Here is a suggestion (for you or an electrically inclined friend): Locate a substitute motor capacitor having similar Mfd (or MF) and Voltage ratings. Remove power from the unit. Reach into the blower squirrel cage and spin it to verify that the shaft is not frozen. Pull the wires from the existing capacitor noting color and location. Connect the wires to the substitute capacitor and secure it place. Apply power and turn on the blower. A no start? Motor replacement time.

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Nov 08, 2011 | Intertherm P3RA-048K Air Conditioner

1 Answer

No problems, would like to find out the best way to remove blower for cleaning on an intertherm gas furnace mgh 075 ina mobile home


Generally ther is two screws at the base of the blower housing which hold it in place, remove the screws and pull, slide the entire assembly out. You will have to disconnect the electrical wiring to the blower and possibly the limit switch on the side if equip.

Aug 23, 2011 | Dayton Gas Furnace Heater

2 Answers

Intertherm MGH-056ABFC-91 won't kick on. Just changed thermocouple, gas valve, and thermostat this week. Changed fan motor, blower wheel, and limit switch last winter. Pilot is lit, thermostat is set. The...


At the furnace, jump the R and W (or T and T) terminals on the circuit board or gas valve. Make sure the door switch is closed with some electrical tape. By doing this we are forcing the unit to start. If it does fire, you have either a bad thermostat or a broken wire to the thermostat. If it does nothing, look for a bad fuse, check for 24 volts going to the gas valve, an open limit switch or 120 volts at the transformer.

Nov 02, 2009 | Intertherm P3RA-048K Air Conditioner

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