I am looking for a source/website for maintenance manuals for aircon units (different from user manuals). I want to do my own cleaning of my units. I hired someone to give them a thorough clean (¥36,000) and saw that they had maintenance manuals for all ( I have 3 different brands). With these I can save some yennies.
Looking forward to replies and suggestions.
Edit: maintenance
by Non-Fungible-Troll