Per Jonathan, wall mount fan and coil cleaning plus corrosion grenade has been discounted to $500. Work is scheduled to be done tomorrow morning January 11, 8 AM to 10 AM. Collected payment for repairs and work will be completed tomorrow. Notes: arrived for full system tuneup on two mini split heads. Checked electrical components and flushed drain line. Blower wheel cleaning was done. January 2023. I do suggest cleanings again on each unit. Summary: this is a Waterfront Home in the outdoor unit has corrosion and rust. To help prevent further decay of metal I highly suggest a corrosion inhibitor the board inside. The outdoor unit is very sensitive to major sources of power, and can be very expensive to fix. Installing a surge protector will help prevent surges of power. Corrosion Grenade