15
9. Test run
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]
[Output pattern A] Errors detected by indoor unit
Wired remote controller
Wireless re-
mote controller
Symptom
Remark
Beeper sounds/OPERATION
INDICATOR lamp flashes
(Number of times)
Check code
1
P1
Intake sensor error
2
P2
Pipe (TH2) sensor error
P9
Pipe (TH5) sensor error
3
E6, E7
Indoor/outdoor unit communication error
4
P4
Drain sensor error
5
P5
Drain pump error
PA
Forced compressor error
6
P6
Freezing/Overheating safeguard operation
7
EE
Communication error between indoor and outdoor units
8
P8
Pipe temperature error
9
E4
Remote controller signal receiving error
10
—
—
11
—
—
12
Fb
Indoor unit control system error (memory error, etc.)
14
PL
Refrigerant circuit abnormal
[Output pattern B] Errors detected by unit other than indoor unit (outdoor unit, etc.)
Wireless remote controller
Wired remote
controller
Symptom
Remark
Beeper sounds/OPERATION
INDICATOR lamp flashes
(Number of times)
Check code
1
E9
Indoor/outdoor unit communication error (Transmitting error) (Outdoor unit)
For details, check the LED display
of the outdoor controller board.
2
UP
Compressor overcurrent interruption
3
U3, U4
Open/short of outdoor unit thermistors
4
UF
Compressor overcurrent interruption (When compressor locked)
5
U2
Abnormal high discharging temperature/49C worked/insufficient refrigerant
6
U1, Ud
Abnormal high pressure (63H worked)/Overheating safeguard operation
7
U5
Abnormal temperature of heat sink
8
U8
Outdoor unit fan safeguard stop
9
U6
Compressor overcurrent interruption/Abnormal of power module
10
U7
Abnormality of super heat due to low discharge temperature
11
U9, UH
Abnormality such as overvoltage or voltage shortage and abnormal synchronous
signal to main circuit/Current sensor error
12
—
—
13
—
—
14
Others
Other errors (Refer to the technical manual for the outdoor unit.)
*1 If the beeper does not sound again after the initial two 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 three 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.
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