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

Cabin Temperature Sensor / Switch

Use voltmeter/ammeter 951 0061 to check temperature sensor. Sensor should allow current to pass through only at temperatures above 18 °C (64 °F).
Cool sensor down in a refrigerator, check that sensor cuts off current at 18 °C (64 °F).