LW1515ER LG A/C fan will not run while compressor is working, but will run when compressor stops running?

jjdonovan

Premium Member
Joined
Aug 13, 2019
Messages
2
Location
westfield mass.
Model Number
LW1515ER
Brand
LG
Age
1-5 years
Hello all,
I am glad that I found a site like this too help figure out what is going on with my 15,000 btu LG air conditioner.
The air conditioner is a window unit model # LW1515ER approx. 5 years old. I must say that I have been very happy with this unit until this problem. The a/c has been trouble free this year until last week when the fan stopped running when the a/c kicks on. The fan will start up as soon as the compressor stops running. This cycle is approx. 1 min in duration and will repeat. I am leaning towards the mother board failure and not a bad capacitor since both parts will run, they just will not run in unison .
I hope someone has run into this same situation and may offer a replacement part # to have this unit up and running.
Thank you all in advance.
JJ Donovan
 

Dan O.

Appliance Tech
Staff member
Joined
Oct 9, 2004
Messages
1,996
Location
Canada
fan stopped running when the a/c kicks on. The fan will start up as soon as the compressor stops running. ... I hope someone has run into this same situation
I've never heard of such a case. If anything it should work the opposite way, the fan forced to come on when the compressor is running.

I am leaning towards the mother board failure ... and may offer a replacement part #
I can't see any other component being responsible than the relay PCB board for such symptoms but it appears to be discontinued. I don't know if you can find 'old stock' of it somewhere.

LINK > EBR39283901 Relay Board

Dan O.
 

jjdonovan

Premium Member
Joined
Aug 13, 2019
Messages
2
Location
westfield mass.
Thanks for the input. I had assumed that a component on the motherboard had failed. Now I can try to locates someone that has a NOS replacement part. I would hate to throw out this unit.
Thank you again!
 
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