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
A/C-Heater and ATC Control Head
ATC Control Head:
Refer to Heating and Air Conditioning for instructions on how to use the DRB III scan tool or the control head self-diagnostics to test the control head. The problem is not with the control head if no trouble codes are found. The next step should be to check the rest of the system after the A/C-Heater or ATC control head is checked.
