Mitsubishi Electric · MSZ-FH Air Conditioners
The AIR PURIFYING lamp indicates a problem with the air purifying power supply. This can be caused by the front panel not being firmly closed, or if the air purifying device is dirty or wet.
Click steps to track your progress.
Ensure the front panel is firmly closed.
Clean the air purifying device and ensure it is completely dry before reattaching.
Turn OFF the AIR PURIFYING power (refer to manual section 10-2.3) and then turn it back ON.
If the issue persists, turn OFF the main power supply and check the interlock switch for the air purifying device to ensure it is firmly fixed.
Contact a qualified service technician if the problem continues.