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Intertherm furnace loses flame in mid cycle. where can I get a chart for diagnostic codes? thanks

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Intertherm is a Miller furnace. Google your model number or Miller Gas Furnace.

Posted on Dec 05, 2008

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I have a E2EH- 023HB Intertherm electric furnace. The contactors are sparking after furnace is turned on for a few minutes


replace contacters, probably old and pitted (remember points in the distributer on older cars?)

Feb 18, 2015 | Intertherm Air Conditioners

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Furnace won't stay lit. Intertherm Model M2RC-080A-16BN. Ignightor glows, flame starts and after a few seconds the flame shuts off. Then it starts the cycle again. It goes thru this cycle a fe


It sounds like the flame sensor is bad. If thats not the case you may need to replace the control board. You should make sure the flame sensor is directly into the flame.

Nov 20, 2014 | Intertherm Air Conditioners

1 Answer

Furnace will not run complete cycle ,several clicks and the and the furnace shutdown and restarts, will not bring the house to temperature


If it's a 90%+ gas furnace, check the combustion air pvc pipe for blockage, if not enough air for proper combustion, control board will shut down the flame to keep from burning poorly! Check your air filter, there's an overtemperature safety switch in the heat exchanger to protect the furnace/ your house, and low airflow will cause the heat exchanger to overheat. Finally, check to see if the flames actually ignite, if no flame, the controller will reset and try again, then if no flame, the controller will reset and try again, then if no flame, the controller will reset and try again, then if no flame, the controller will reset and try again.... get the idea? :) If this is the case, check my other solutions, I just answered someone elses question about non ignition. Hope this helps.

Mar 23, 2013 | Intertherm P3RA-048K Air Conditioner

1 Answer

Intertherm furnace will not ignite the board flashs four times


Hi, you will have a chart glued to a panel with a list of codes per flashes telling you what to check with 4 flashes. Read this and get back to me on what is is telling you.
Robert Horton

Oct 25, 2011 | Intertherm P3RA-048K Air Conditioner

1 Answer

Intertherm propane furnace makes popping sound when running


It sounds like you have a possible hole in the heat exchanger. Turn the heat off and turn the fan on. If you feel any air coming back out of the heat exchanger, you have a hole. A yellow flame is not a good sign. I would even consider having a service professional come out and take a look.

Apr 05, 2009 | Intertherm P3RA-048K Air Conditioner

1 Answer

Furnace has does not ignite flame


how often do you replace your filter?

On the limit switch that protects your unit when it gets to hot the number one reason is dirty filter.

The pressure switch is located in the upper side of cabinet has a rubber hose connected to it. They very rarely go out though. So find your vent fan the first fan that comes on and follow the rubber hose to the switch.

Feb 09, 2009 | Intertherm P3RA-048K Air Conditioner

1 Answer

Weak flame in intertherm furnace


Ok, so we can rule out the ignitor. (standing pilot systems can develop problems that will cause such symptoms.)

Check the gas pressure, make sure you are getting 11 to 14 PSI.

You need that after the regulator all the way to the manifold.

Also check for cracks in the heat exchanger, causing the wind from the blower to distort the flame pattern enough to cause improper contact with the flame sensor.

Make sure the burners and flame channels are clean of rust, and dibri build up, allowing the flame to properly contact the sensors.

Jan 18, 2009 | Intertherm P3RA-048K Air Conditioner

2 Answers

My Amana Gas Fired Air Furnace (80) failed to come on with warm air. Blower works but cold air only? Is there an obvious problem here?


first, clean the flame sensor, does the draft motor come on?  could be ignition control board failure

Nov 15, 2008 | Amana Air Conditioners

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