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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Refrigerant Pressure Sensor / Switch: Service and Repair

1. Disconnect battery ground cable, then disconnect switch lead.
2. Unscrew and remove switch unit. It is not necessary to discharge system refrigerant during this procedure, as switch unit is mounted on a schrader valve.
3. Reverse procedure to install.