Panasonic U-120ME2U9 Service Manual page 169

3. 2WAY Alarm Codes
L10 Alarm
Alarm code L10
Alarm meaning Capacity setting of outdoor unit is not correct.
Alarm conditions The outdoor unit capacity has not been set, or the setting is not allowed by the system.
Probable cause This alarm occurs because the capacity has not been set.
Check Connect the outdoor unit maintenance remote controller. On the outdoor unit EEPROM detailed setting
mode screen, check the value for the outdoor unit capacity (item code 81).
Check that it is not set to "0" or to a capacity that is not allowed.
U-72/96/120/144ME2U9
Number of compressor
U-72/96/120/144ME2U94
Number of compressor
Correction If item code 81 is incorrect, use the outdoor unit maintenance remote controller and set it correctly.
* After changing the setting, be sure to reset both the indoor and outdoor power.
Example —
Notes The outdoor unit maintenance remote controller is required in order to set the capacity in the outdoor unit
EEPROM.
JP7 in CTL board
1 open
2 short
HIC1
1 7 pieces electric wire
2 8 pieces electric wire 7 pieces electric wire
5 - 23
item code: 81 Type of outdoor unit
210, 280 72, 96
355, 420 120, 144
HIC2 item code: 81
—
210, 280
355, 420
2WAY VRF SYSTEM
Trouble Diagnosis
Type of outdoor unit
72, 96
120, 140
1
2
3
4
5
6
7
8
9