If you have a Mitsubishi Air Conditioning system giving you an E6 error this video is for you. I have a Mr Slim split system and the E6 code was showing up on all my controllers screens. After some research I discovered it is a communication error code which can be a bit misleading because if one of your circuit boards in the condenser unit is fried then it cannot communicate. I researched and purchased my own circuit boards as a tech would charge double for the boards.
Replacing all three boards is the way to go as one fried one can affect the other two.
It is a relatively easy job to do yourself.
Watch the full video to find out the common cause of the short circuit that fried the power board and how to prevent it in the future.
Circuit board waterproofing spray: amzn.to/4aGbUX1
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