Air Conditioning E4 fault failure
Diagnosing an E4 fault in an air conditioning system. This is my diagnosis of my daughter's LG model LP0910WNR portable A/C unit. Same as the Goldstar but can possibly be used to diagnose many systems out there. Beit roll around like this one, window units and maybe even some permanent mount systems. Amazon link for the sensor. I purchased a 2 pack. https://www.amazon.com/dp/B07LGJ5QLY?...

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