Panasonic CS-C12EKF, Service Manual

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12 Service Mode
12.1. Auto OFF/ON Button
• The “Auto OFF/ON Button” (behind the front grille) is used to operate the air conditioner if remote control is misplaced or mal-
functioning.
• Forced cooling operation is possible by pressing the “Auto OFF/ON Button” for more than 5s where “beep” sound is heard then
release the button.
• User able to select remote control transmission code and toggle remote control signal receiving sound under various setting
mode.
• To enter various setting mode:
- Press the “Auto OFF/ON Button” continuously for 5s (“beep” sound is heard) and release.
- Within 20s, press the “Auto OFF/ON Button” continuously for 5s again (2 “beep” sound is heard) and release.
- Various setting mode has limit up to 20s. Then return to normal operation.
12.1.1. Toggle Remote Control Signal Receiving Sound
• Under various setting mode, press the “Auto OFF/ON Button” to toggle the remote control sound.
- Short “beep”: Turn ON remote control signal receiving sound.
- Long “beep”: Turn OFF remote control signal receiving sound.
• After “Auto OFF/ON Button” is pressed, the 20s counter for various setting mode is restarted.
12.1.2. Select Remote Control Transmission Code
• There are 4 type of remote control transmission code could be selected and stored in EEPROM of indoor unit. The indoor unit
will only operate when received signal with same transmission code from remote control. This could prevent signal interference
when there are 2 or more indoor unit installed nearby together.
• To change remote control transmission code, short or open jumpers at the remote control printed circuit board.
• Under various setting mode, after select the transmission code combination of remote control, press any button of remote control
to transmit a signal to indoor unit. The transmission code will be stored in EEPROM.
• After signal is received, the various setting mode is cancelled and return to normal operation.
12.2. Remote Control Button
12.2.1. SET
• To change the type of remote control transmission signal (there are totally four types of transmission codes).
- Modify the jumper (back of PCB) & connector (front of PCB) at remote control PCB.
- Press with pointer for more than 10 seconds.
- Face the transmitter towards indoor unit receiver and press the timer SET button (to send the signal) or if the timer SET but-
ton is not pressed for 30 seconds, the setting mode is cancelled.
- Press timer CANCEL button to exit the setting mode.