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

HVAC Learn Mode

This feature allows the ACAC system to be custom calibrated to the desire of the operator. This is done by programming an offset value in the memory to increase or decrease the actual interior temperature above or below the set temperature. During the calibration offset procedure, the procedure can be aborted any time before the new calibration is locked in by pressing the "AUTO" switch. The HVAC learn mode can only be interred once for each entry into diagnostics.