Mitsubishi Electric · City Multi Air Conditioning Systems
This error indicates that water leakage has been detected within the indoor unit. This is often caused by a blocked drain, a faulty drain pump, or a damaged drain pan.
Click steps to track your progress.
Turn off the power to the indoor unit at the circuit breaker immediately.
Locate the indoor unit's drain pan and inspect it for any standing water or signs of overflow.
Check the condensate drain pipe for any blockages, such as algae or debris, and attempt to clear it if accessible.
Ensure the indoor unit is properly leveled to allow for effective drainage.
If you cannot identify or resolve the source of the leak, contact a service professional to prevent further water damage.