ACU Power Check Failure — Power or Connection Issue

Was bedeutet ACU Power Check Fail ?

This test verifies power flow to and from the Appliance Control Unit (ACU). Failure can indicate issues with the power cord, interference filter, or connections to the ACU.

• Faulty power cord
• Defective interference filter
• Loose or damaged harnesses/connections between filter and ACU
• No line voltage at the outlet

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1. 1

   Visually inspect all connections to the interference filter (IF) and ACU.

2. 2

   Check for line voltage at the input of the interference filter.

3. 3

   If voltage is present, check voltage at the output of the interference filter. If absent, replace the IF.

4. 4

   If voltage is present at the IF output, check voltage at the ACU input connector (J2 pins 1 and 2).

5. 5

   If voltage is absent at the ACU input, check harnesses and connections between the filter and ACU.

6. 6

   Verify the continuity of the power cord if no line voltage is present at the IF input.