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

Power Transistor HVAC: Testing and Inspection

Power Transistor Test

1. Disconnect the 3P connector from the power transistor.

2. Carefully release the lock tab on the No.2 terminal in the 3P connector, then remove the terminal and insulate it from body ground.
3. Connect a 1.2 - 3.4 W bulb between the No.1 and the No.2 cavity on the 3P connector.
4. Reconnect the 3P connector to the power transistor.
5. Turn the ignition switch ON (II), and check that the blower motor runs.