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

Temperature Control Knob

When the temperature knob is in the BLUE (cold) end of travel, the heater system delivers unheated air. When the temperature knob is in the RED (hot) end of travel, all the air passing through the heater module is heated before being discharged. Intermediate positions of the temperature knob mix heated and unheated air to provide more moderate air temperatures.