27
[Output pattern A] Errors detected by indoor unit
[Output pattern B]
E9
*1 If the beeper does not sound again after the initial 2 beeps to confirm the self-check start signal was received and
the OPERATION INDICATOR lamp does not come on, there are no error records.
*2 If the beeper sounds 3 times continuously “beep, beep, beep (0.4 + 0.4 + 0.4 sec.)” after the initial two beeps to confirm
the self-check start signal was received, the specified refrigerant address is incorrect.
OPERATION
INDICATOR
lamp flash
pattern
Beep
Beep Beep Beep
Beep
Beep
Beep
Off
Approx. 2.5 sec.
On
Approx. 3 sec.
On
0.5 sec.
On
0.5 sec.
On
0.5 sec.
On
0.5 sec.
Off
Approx. 2.5 sec.
On
Approx. 3 sec.
On
0.5 sec.
On
0.5 sec.
· · · Repeated
Number of flashes/beeps in pattern indicates the check
code in the following table (i.e., n=5 for “U2”)
Number of flashes/beeps in pattern indicates
the check code in the following table
n
th
1
st
2
nd
3
rd
1
st
2
nd
Self-check
starts
(Start signal
received)
Beeper sounds
[Output pattern B]
OPERATION
INDICATOR
lamp flash
pattern
Beep
Beep Beep Beep
Beep
Beep Beep
Off
Approx. 2.5 sec.
On
0.5 sec.
On
0.5 sec.
On
0.5 sec.
On
0.5 sec.
Off
Approx. 2.5 sec.
On
0.5 sec.
On
0.5 sec.
· · · Repeated
Number of flashes/beeps in pattern indicates the check
code in the following table (i.e., n=5 for “P5”)
Number of flashes/beeps in pattern indicates
the check code in the following table
n
th
1
st
2
nd
3
rd
1
st
2
nd
Self-check
starts
(Start signal
received)
Beeper sounds
• Refer to the following tables for details on the check codes.
[Output pattern A]
Beeper sounds/OPERATION
INDICATOR lamp flashes
Check code
Symptom
Remark
(Number of times)
Wireless remote controller
Wired remote controller
Beeper sounds/OPERATION
INDICATOR lamp flashes
Check code
(Number of times)
Wireless remote controller
Wired remote controller
1
P1
Intake sensor error
P9
Pipe (TH5) sensor error
2
P2
Pipe (TH2) sensor error
3
E6,E7
Indoor/ outdoor unit communication error
4
P4
Drain sensor error/ Float switch connector open
5
P5
Drain pump error
6
P6
Freezing/ Overheating protection operation
7
EE
Communication error between indoor and outdoor units
8
P8
Pipe temperature error
9
E4, E5
Remote controller signal receiving error
10
–
11
–
–
–
Errors detected by unit other than indoor unit (outdoor unit, etc.)
Symptom
Remark
1
Indoor/outdoor unit communication error
2
(Transmitting error) (Outdoor unit)
3
Open/short of outdoor unit thermistors
4
Compressor overcurrent interruption (When compressor locked)
5
Abnormal high discharging temperature/ 49C worked/
insufficient refrigerant
6
Abnormal high pressure (63H worked)/ Overheating
protection operation
7
Abnormal temperature of heat sink
8
Outdoor unit fan protection stop
9
Compressor overcurrent interruption/Abnormal of power module
10
Abnormality of super heat due to low discharge temperature
11
Abnormality such as overvoltage or voltage shortage and
abnormal synchronous signal to main circuit/Current sensor error
12
13
U2
U5
UP
U3,U4
UF
U1,Ud
U8
U6
U7
U9,UH
Others
–
–
–
–
14
Other errors
For details, check
the LED display
of the outdoor
controller board.
12
Fb
Indoor unit control system error (memory error, etc.)
–
E0, E3
–
E1, E2
Remote controller control board error
Remote controller transmission error
Compressor overcurrent interruption
As for indoor
unit, refer to
indoor unit's
service manual.
OC338C-1.qxp 07.5.24 11:31 AM Page 27
