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• Refer to the following tables for details on the check codes.
[Output pattern A]
Beeper sounds
Beep
OPERATION
INDICATOR
lamp blink
Off
pattern
Approx. 2.5 sec.
Self-check
starts
(Start signal
Number of blinks/beeps in pattern indicates the check
received)
code in the following table (i.e., n=5 for "P5")
[Output pattern B]
Beeper sounds
Beep
OPERATION
INDICATOR
lamp blink
Off
pattern
Approx. 2.5 sec.
Self-check
starts
(Start signal
received)
[Output pattern A] Errors detected by indoor unit
Wireless remote controller
Beeper sounds/OPERATION
INDICATOR lamp blinks
(Number of times)
1
2
3
4
5
6
7
9
12
14
–
–
[Output pattern B]
Errors detected by unit other than indoor unit (outdoor unit, etc.)
Wireless remote controller
Beeper sounds/OPERATION
INDICATOR lamp blinks
(Number of times)
1
2
3
14
Notes:
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 2 beeps to confirm
the self-check start signal was received, the specified refrigerant address is incorrect.
*The check code in the parenthesis indicates PAR-30MAA model.
OCH688A
Beep Beep Beep
Beep
st
nd
rd
th
1
2
3
n
On
On
On
On
0.5 sec.
0.5 sec.
0.5 sec.
Approx. 2.5 sec.
0.5 sec.
Beep Beep Beep
st
nd
1
2
On
On
On
Approx. 3 sec.
0.5 sec.
0.5 sec.
0.5 sec.
Number of blinks/beeps in pattern indicates the check
code in the following table (i.e., n=5 for "U2")
Wired remote controller
Check code
P1
Intake sensor error
P2
Pipe (TH2) sensor error
P9
Pipe (TH5) sensor error
Indoor/outdoor unit communication error
E6,E7
P4
Drain sensor error/Float switch connector (CN4F) open
P5
Drain pump error
PA
Forced compressor stop (due to water leakage abnormality)
P6
Freezing/Overheating protection operation
EE
Communication error between indoor and outdoor units
E4, E5
Remote controller signal receiving error
Indoor unit control system error (memory error, etc.)
Fb (FB)*
PL
Abnormality of refrigerant circuit
Remote controller transmission error
E0, E3
E1, E2
Remote controller control board error
Wired remote controller
Check code
Indoor/outdoor unit communication error
E9
(Transmitting error) (Outdoor unit)
Compressor overcurrent interruption
UP
Open/short of outdoor unit thermistors
U3,U4
Others
Other errors (Refer to the technical manual for the outdoor unit.)
Beep Beep
st
nd
1
2
· · · Repeated
Off
On
On
0.5 sec.
0.5 sec.
Number of blinks/beeps in pattern indicates
the check code in the following table
Beep
rd
th
3
n
On
On
Off
0.5 sec.
Approx. 2.5 sec.
Symptom
Symptom
20
Beep
Beep
1
st
2
nd
· · · Repeated
On
On
On
Approx. 3 sec.
0.5 sec.
0.5 sec.
Number of blinks/beeps in pattern indicates
the check code in the following table
Remark
As for indoor
unit, refer to
indoor unit's
service manual.
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Troubleshooting
