CS-A28JKD, CU-A28JKD - Panasonic Air Conditioner Service Manual (repair manual). Page 47

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1. AUTO OPERATION MODE

The Auto operation will be activated immediately once the Auto OFF/ON button is pressed. This operation can be used to
operate air conditioner with limited function if remote control is misplaced or malfunction.

2. TEST RUN OPERATION (FOR PUMP DOWN/SERVICING PURPOSE)

The Test Run operation will be activated if the Auto OFF/ON button is pressed continuously for more than 5 seconds. A “beep”
sound will occur at the fifth seconds, in order to identify the starting of Test Run operation.

3. VARIOUS SETTING MODE

The Various Setting Mode will be activated if (within 20 seconds of Test Run Operation) the Auto OFF/ON button is pressed
for more than 5 seconds. 2 "beep" sound will be heard to identify the starting of this operation.

Under Various Setting Mode, user could perform the following operation:
a) REMOTE CONTROL RECEIVING SOUND OFF/ON

Press Auto OFF/ON button to toggle remote control receiving sound.
- Short "beep": Turn ON remote control receiving sound.
- Long "beep": Turn OFF remote control receiving sound.
After Auto OFF/ON Button is pressed, the 20 seconds counter for Various Setting Mode is restarted.

b)  REMOTE CONTROL NUMBER SWITCH

• There are 4 types 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 units 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.
• If there is no code is transmitted or AUTO OFF/ON button is not pressed within 20 seconds, the Various Setting Mode

will be cancelled.