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How to program Simple Comfort AM7890 thermometer

I cannot get the setting accurate. I have the manual and do not understand it at all. The blower is blowing tepid air and running constantly. I have reset, tweaked and tried every combination imaginable but nothing is working. HELP PLEASE!!

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6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

philbran
  • 242 Answers

SOURCE: Furnace runs constantly since blower motor was replaced

Sounds like they wired it direct to line voltage , it should run through a sequencer or fan relay to cycle on and off , your seq./relay could be stuck closed to but unlikely being it was just repaired , call the service company back before you do anything they are responsible.

Posted on Apr 11, 2009

james3751
  • 614 Answers

SOURCE: central air unit only blows warm air , when set on cold

First check to see if your outside unit is working and you can here the compressor running. If the fan runs and the compressor does not you have a problem with the capacitor or wires burnt off terminals. If your not sure you know how to work on this please call a service tech ask for free estimate. If the unit compressor and fan runs you may be out of gas that meanns you have a leak. Either way you need a service tech. You can only go so far without the correct tools to work with. Russ

Posted on Jul 22, 2009

SOURCE: How can I reset my simple comfort 2010, it want co

Hello Try/check the heat setting/temp make sure they dont conflict ,lower the heat settings and then cool should go lower than 70.

Posted on Apr 06, 2010

  • 1 Answer

SOURCE: My LG Lan125HV works fine on air conditioning (

I talked to LG customer support (800) 243-0000. The tech told me that this model had a problem with the indoor thermistor. It doesn't fail with an open-circuit condition, so you don't get an error code. The thermister just goes out of range and believes your indoor temp is much hotter than it is. That's why the heating never comes on. I'll bet that, even though it ran in COOLING mode, once your room reached setpoint, it just kept on cooling & cooling ... because the thermistor was still giving a false, high temp reading.

So, I bought a new thermistor, P/N 6323A20042A. My unit worked fine. Until the next week when I turned heating back on and now I have the same problem ... gives cooling but no heat. Something is failing the indoor thermistor OR the distributor sent me an old-style thermistor, I haven't gotten determination on that yet.

Regardless, call LG and see if they can't direct you to a distributor for an indoor sensor. LG's warranty coverage for parts is a royal pain, unless you can show a receipt by a certified installer, you're not going to have much luck getting payment for the part. However, the thermistor is only $10. Just hope you get one that doesn't fail on you!

Posted on Nov 27, 2010

heatman101
  • 43501 Answers

SOURCE: Tempstar smart comfort 2200 air

Hi,
There are quite a few things that could do that...
First... a bad t-stat or transformer.. is the indoor blower running???

Next, one of the limit switches has shut down the outdoor unit....that could be because of either high or low refrigerant pressure...

Fuse blown in the outdoor disconnect....

Low voltage wiring to the outdoor unit bad...

Contactor coil in the outdoor unit bad or contactor points bad....

Any of these things could cause what you are observing....to troubleshoot this you will need to be able to use an electrical meter properly and check power flow till you find the problem...

heatman101

Posted on Feb 02, 2011

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