Panasonic U-26PE1U6 Technical Data & Service Manual page 248

(2) LED Indicator Messages on Outdoor Control PCB
Power ON sequence
1. No communication from indoor units in system
2. Communication received from 1 or more indoor units in system
3. Regular communication OK (Capacity and unit quantity match)
Normal operation
EEPROM error (F31)
Pre-trip (insufficient gas)
Pre-trip (P20)
Pre-trip (other)
Alarm
Insufficient gas indicator
Refrigerant recovery mode
Automatic address setting
Automatic address setting in progress
Automatic address setting alarm (E15)
Automatic address setting alarm (E20)
Automatic address setting alarm (Other than E15 and E20)
:
ON
:
Blinking (0.25/0.75) indicates that the lamp illuminates for 0.25 seconds, and then is OFF for 0.75 seconds.
Unless otherwise indicated, the blinking is (0.5/0.5).
:
OFF
(3) Examples of alarm display (other than E15, E16, and E20)
4
Alarm / Display
P03
P04
P05
P31
H01
•
E04
•
F07
•
L13
•
LED 1 Alternately
( Blinks 2 times )
( )
"
( )
"
( )
"
(Blinks 3 times)
•
(Blinks 4 times)
•
(Blinks 5 times)
•
(Blinks 6 times)
•
LED 1 LED 2
(0.25/0.75)
(0.75/0.25)
Alternate blinking during alarms
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
N = Alarm No.
"
* Refer to (3) Examples of alarm display
(0.25/0.75)
(0.75/0.25)
→
LED 2
(Blinks 3 times)
(Blinks 4 times)
(Blinks 5 times)
(Blinks 31 times)
(Blinks 1 times)
(Blinks 4 times)
(Blinks 7 times)
Note:
(Blinks 13 times)
This table shows example alarms. Other alarms
may also be displayed.
4-4
4. Service procedures
Remarks
If it is not possible to
advance to 3, repeats 1 → 2.
At 3, changes to normal
control.
Displayed during automatic
address setting 1 and initial
communication. After these are
completed, alarm F31 is displayed.
P03
"
below.
Blinking alternately
(0.25/0.75) Blinking simultaneously
(0.75/0.25)
Blinking simultaneously
Blinking simultaneously
6: L alarm