Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

(Some people have issue connecting. LEMON is investigating. For now, use Firefox or change your DNS server)

Or, hide this message: temporarily or permanently

Heating and Air Conditioning

HVAC Schematics

Power, Ground, Data Communications and Blower Controls

Mode and Temperature Controls (Left Hand Drive)

Mode and Temperature Controls (Right Hand Drive)

Temperature Controls

A/C Compressor Controls

Temperature and Air Quality Controls