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)

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Initial Inspection and Diagnostic Overview

DIAGNOSIS OVERVIEW
To diagnose the climate control system in the shortest time, it is important to know how a properly functioning system will perform. Diagnosis of all climate control functions must begin with the Diagnostic System Check. This quick test can save time and lead to the correct diagnosis procedure to repair the problem.