Operation CHARM: Car repair manuals for everyone.
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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Temp.Check

TEMP.CHECK




As shown in the figure, in adjusting temp. switch from WARM to COOL, 0 V is outputted from temp. connector B7, 12 V is supplied for B8 and temp. motor works in direction of COOL. In adjusting temp. switch from COOL to WARM, 0 V is outputted from temp. connector B8, 12 V is supplied for B7 and temp. motor works in direction of WARM. When temp. actuator has to move to a certain location for its automatic control, temp. feedback signal terminal moves equally in temp. actuator and informs controller of location of temp. actuator through temp. connector B9. Comparing original value with the inputted value, it works until they are same.




TROUBLESHOOTING