Panasonic U-8ME2R8 Installation Instructions Manual page 49

● Name And Function Of Each Switch On Outdoor Unit Control P.C. Board
Function Switch
MODE pin (3P, BLK)
(CN40)
A.ADD pin (2P, WHT)
(CN30)
CHK pin (2P, WHT)
(CN23)
RC plug (3P, BLU)
(CN73)
RUN pin (2P, WHT)
(CN27)
STOP pin (2P, WHT)
(CN28)
AP pin (2P, WHT)
(CN24)
SNOW plug (3P, RED)
(CN34)
SILENT plug (2P, WHT)
(CN33)
OC EMG terminal
(3P, BLK) (CN69)
RC1 EMG terminal
(3P, BLK) (CN82)
For details, refer to the Test Run Service Manual.
SW5
SW4
JP11
JP12
CN67
CN69
CN82
CN73
TM1
Changes to cooling/heating mode. (outdoor main unit is only usable.)
When in normal operation: When short circuited the COOL side, indoor unit operation in the same
When in auto address setting: Changes to heating mode with open-circuit.
Short circuited for over 1 second long
If short circuit lasts for over 1 second long during auto address setting, the setting is interrupted.
When short circuited, test run begins.
(If the remote controller is connected in test run mode, it is automatically cancelled after 1 hour.)
Also, if short-circuit is cancelled, test run mode is cancelled.
Connects to outdoor unit maintenance remote controller and content of alarm message will be checked.
When short circuited and pulse signal is given, all indoor units operate in the same refrigerant system.
When short circuited and pulse signal is given, all indoor units stop in the same refrigerant system.
(When short circuited, operation cannot be performed by the indoor unit's remote controller.)
Can be used when vacuuming the outdoor unit.
Can be used when installing a snowfall sensor device.
Can be used when setting the outdoor unit fan in sound absorbing mode.
If "TO INDOOR UNIT" accidently connected to high voltage, use the terminal base TM1.
Method: 1. Replace the pins 1 and 2 of CN69 with the pins 2 and 3.
2. Disconnect JP11.
If "TO OUTDOOR UNIT" accidently connected to high voltage, use the terminal base TM1.
Method: 1. Replace the pins 1 and 2 of CN82 with the pins 2 and 3.
2. Disconnect JP12.
LED1 LED2
SW6 SW7
SW1
SW2
SW3
CN22 CN23
CN27
Remarks
refrigerant system changes to all cooling mode.
When short circuited the HEAT side, indoor unit operation in the same
refrigerant system changes to all heating mode.
Auto address setting starts with open-circuit.
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CN33 CN34
CN24
CN28 CN30 CN40