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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Cycling Clutch Switch Test

With ambient temperature in the test area around 21°C (70°F), supply 12 (+/- volt) to pin 2 and ground pin 4. Test for continuity from pin 1 to pin 3. If the test shows continuity, proceed to "Compressor Clutch Diagnosis Chart". If no continuity is detected, replace the ECCS.