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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Leak Test - Evaporator Core

One of the most difficult leaks to find is in the evaporator core. To leak test the core:

1. Turn the blower fan on "HI" for 15 or more seconds then shut it "Off."
2. Wait 10 minutes.
3. Remove the HVAC filter access door and HVAC filters.
4. Insert the leak detector probe into the opening trying to get as close to the evaporator as possible. If the detector goes to a solid alarm, a leak has been found.