Indoor unit leaking water from front panel or dripping onto wall

Safety: Turn off power and place towels or a container under the unit to catch water.

• Clean filters: Remove and clean filters to reduce condensate carryover.
• Access drain pan: Remove the front cover and inspect the drain tray for standing water and debris. Scoop out sludge and rinse with warm water and mild detergent.
• Flush drain line: Disconnect the drain hose at the indoor unit if possible and flush with water. Use a wet/dry vacuum at the outlet end to pull out blockages.
• Check slope: Ensure the drain hose runs continuously downward with no upward loops or sags where water can collect.
• Inspect pan: If the drain pan is cracked or warped, replace it with a compatible Viessmann drain pan.