Error 180 — Simultaneous opening of cooling/heating MCU SOL V/V (1st detection)

What does 180 mean?

The system has detected, for the first time, that both the cooling and heating solenoid valves (SOL V/V) controlled by the MCU are open simultaneously. This should not happen.

• Malfunctioning solenoid valves
• Control board issue
• Incorrect valve signals

Click steps to track your progress.

1. 1

   Check the operation of both the cooling and heating solenoid valves.

2. 2

   Verify the control signals being sent to the valves.

3. 3

   Inspect the MCU (Main Control Unit) for any visible damage.

4. 4

   This error requires professional diagnosis.