Intertherm Heating & Cooling - Recent Questions, Troubleshooting & Support
Intertherm inside unit icing while heating
There is no antifreeze in the system. The system is filled with liquid gas and gaseous gas. On the heating cycle, the inside coils should get hot and the outside coils should get cold. In the summer, the heat pump reverses to provide Air Conditioning, the outside coils get hot and the inside coils get cold. They shouldn't really ice up because there is a defrost cycle. You need professional service by an Intertherm technician.
I have a intertherm m1m furnace and the red light blinks 2 times indicating the pressure switch is open how do I correct this problem
The pressure switch is a pressure sensing device to ensure the system is operating within the parameters for which it was designed. The pressure switch on the positive pressure side of the combustion air fan when tripped indicates a flu blockage which will limit the amount of flu gasses passing through the heat exchanger. I would suggest checking the flu for a blockage and if there is a second pipe (combustion air), you should check it also as with either blocked, the proper operation of the pressure switches is in jeopardy.
You cannot bypass the pressure switches because the algorithym in the control module will see that the pressure switch is in the wrong position at the moment a call for heat was initiated.
If there are no flue blockages apparent but you find that there is no screen on the end of the flu pipe or pipes, you may still have a blockage in the form of a dead bird. They like to roost inside the openings of the pvc pipes for warmth, then die of carbon monoxide poisoning and block the pipe. Sometimes they even make their way the full horizontal length and die at an elbow and fall directly on top of the flu opening on top of the furnace. I have had to make numerous cuts to locate blockages before.
12/30/2021 10:08:06 PM •
Intertherm...
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Answered
on Dec 30, 2021
Yellow flame on propane fueled Mobile home heater. Intertherm model MGH 075A. Can’t find any Maintenance manuals. Help
Yellow flame is very bad, not only is it producing soot that worsens the problem but it is also producing an excess of poisonous carbon monoxide gas.
Insufficient air is mixing with the gas to ensure complete combustion and in most case a thorough internal clean will be sufficient to restore it to good health, though checking no combustion gas is leaking from the unit is the tricky part. Faulty heaters kill people and mostly they don't even realise it.
Ideally you should have the appliance professionally serviced, inspected and certified...
My A/C blowing air, but
Hello, sounds like it is either a low charge or lack of airflow, what type of filter are you using? sometimes those filters that claim to be super effecient will actually cut down on your airflow and cause the ac to freeze up.
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