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

Control Keys Do Not Operate Properly

If the control keys do not operate properly, check the wiring between the Air Control Module (ACM) and the Control Switch assembly for damage.
If the wires are OK, Replace the ACM with a known good one. If the problem still exists, replace the Control Switch assembly.