Question about LG LA120HYV Art Cool 120HYV Ultra Efficiency SingZone Inverter Mini Split Air Conditioner System with 12 000 BTU Cooling 13 600 BTU Heating and Indoor and Outdoor Unit in White

1 Answer

Does not produce Heat

When I start my LG with my remote it shows that we are set in the heating mode (the sun). After about 15 minutes, without touching the remote, the machine basically turns off and on the machine (not the remote because nothing has changed on the remote, it still shows a "sun" for heat) there is a snowflake with a water drop underneath showing that it is on cooling and dehumidifying? What does this mean and how can I stop it from happening?

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  • Contributor
  • 29 Answers

Sounds to me like it is defrosting the outdoor unit. Is this possible? The process takes a little bit to complete but it will then start up again.

Posted on Nov 26, 2014

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6ya6ya
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Posted on Jan 02, 2017

  • 4 Answers

SOURCE: AIR CONDITIONER LG S18AN

The operating LED will be blinking 5 times, means that there is a
comunication error (serial comunication) between the outdoor and the indoor unit.

Posted on Jan 20, 2009

daddyo742001
  • 70 Answers

SOURCE: My LG LAN125 mini split heat pump occasionally

Wash out your outside coil and monitor the outside fan. sounds like a lockout due to dirty condenser or intermittent motor operation. Could mean condencer air problem.

Posted on Jun 28, 2009

  • 2 Answers

SOURCE: LG Ductless Mini Split System LAN125hv: Heat pump doesn't run.

CA: Compressor Discharge Sensor Fault

Contact a qualified service technician and have them replace this sensor.

Posted on May 04, 2010

Myminisplit
  • 11 Answers

SOURCE: 5mint cooling 5minuts heating

The reverse valve and silenoied are bad, you need to change them or replace the condencer.

Posted on May 21, 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

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