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

Programming and Relearning

After disconnecting the battery or experiencing a complete power loss, synchronize the electronically operated actuators as follows:
1. Turn ignition to the RUN position.
2. Simultaneously press the AUTO and OFF buttons (located on the heat and A/C control head) for at least five seconds.
3. After initiation, the stepper motors will cycle from one stop to the other. You may hear the motors cycling while calibrating.