EdgeStar WAC Series Service Bulletin

Document Type: Service Bulletin
Models Covered: WAC and WTC Series Air Conditioners
Koldfront Window / Through The Wall Air Conditioner Ribbon Cable Connection
While rare, excessive vibration during shipment may cause the ribbon cable that connects the front control
panel to the control board to become disconnected. This can result in a unit that will not power on and/or may
appear to power on but will not perform all functions correctly. To remedy this issue, the ribbon cable
connection must be checked and re-connected if loose or disconnected.
Please refer to the below instructions.

Step 1: Remove Front Panel

1.1 Disconnect unit from power supply.
1.2 Remove 2 (two) Phillips head screws that attach front panel to cabinet. The screws are located on the lower
left and right sides of the front panel as noted in the following images.
1.3 Gently release / remove panel far enough to
reveal ribbon cable that connects the control
panel to the control box within the interior
cabinet.
EdgeStar, 8606 Wall St, Suite 1800, Austin, TX 78754
support.edgestarFRP ‡ VHUYLFH#HGJHVWDr.com ‡ HGJHVWDUFRP
*Warranty service should be performed by an authorized service representative only.
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