Outdoor Unit Control Panel Led Display - Panasonic U-72MF2U9 Service Manual

2. Outdoor Unit Control Panel LED Display

LED (RED)
1
(Both ON)
(OFF) (ON)
1
(Both OFF)
2
(Blinking alternately)
(Both blinking)
3
(Blinking alternately)
4
5
6
7
8
9
2
After the power is turned ON (and auto address setting is not in progress), no communication with
the indoor units in that system is possible.
After power is turned ON (and auto address setting is not in progress), one or more indoor units are
confirmed in that system; however, the number of indoor units does not match the number that was
set.
Auto address setting was completed successfully. (After the power is turned ON, and auto address
setting is not in progress, the number of detected indoor units connected to that system matches
the number that was set, and regular communications are occurring.)
Auto address setting is in progress.
At time of auto address setting, the number of indoor units did not match the number that was set.
Alarm display
LED 1 blinks M times, then LED 2 blinks N times. The cycle then repeats.
M = 2: P alarm 3: H alarm 4: E alarm 5: F alarm 6: L alarm
N = Alarm No.
Example: LED 1 blinks 2 times, then LED 2 blinks 17 times. The cycle then repeats.
Alarm is "P17."
( : ON
Display meaning
5 - 4
3WAY VRF SYSTEM
Trouble Diagnosis
: Blinking : OFF)