High - Mitsubishi Electric SLZ-KF25VA2 Technical & Service Manual

Refer to the following tables for details on the check codes.
[Output pattern A]
Beeper sounds Beep
OPERATION
INDICATOR
lamp blinking
Off
pattern
Approx. 2.5 s
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 blinking
Off
pattern
Approx. 2.5 s
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
8
9
10
11
12
14
[Output pattern B] Errors detected by unit other than indoor unit (outdoor unit, etc.)
Note: The supported check codes may vary depending on the connected outdoor unit.
Wireless remote controller
Beeper sounds/OPERATION
INDICATOR lamp blinks
(Number of times)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
OCH616
Beep Beep Beep
1 st 2 nd 3 rd
On On On
0.5 s 0.5 s 0.5 s
Beep
1 st
On On
Approx. 3 s 0.5 s
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, P9 Pipe (liquid or 2-phase pipe) sensor error
E6, E7 Indoor/indoor unit communication error
P4 Drain sensor error / Float switch connector open
P5 Drain overflow protection operation
PA Forced compressor error
Freezing (during cooling operation)/Overheating protection operation (during
P6
heating operation)
EE Assembly error (system error)
P8 Pipe temperature error
E4 Communication error between wired remote controller and indoor unit
— —
Pb Indoor unit fan motor error
Fb Indoor unit control system error (memory error, etc.)
PL Refrigerant circuit abnormal
Wired remote
controller
Check code
E9 Indoor/outdoor unit communication error
UP Compressor overcurrent interruption
U3, U4 Open/short of outdoor unit thermistors
UF Compressor overcurrent interruption (When compressor locked)
U2 Abnormal high discharging temperature/49C worked/insufficient refrigerant
U1, Ud Abnormal high pressure (63H worked)/Overheating protection operation
U5 Abnormal temperature of heat sink
U8 Outdoor unit fan protection stop
U6 Compressor overcurrent interruption/Abnormal of power module
U7 Abnormality of super heat due to low discharge temperature
Abnormality such as overvoltage or voltage shortage and abnormal synchro-
U9, UH
nous signal to main circuit/Current sensor error
— —
— —
Others Other errors (Refer to the technical manual for the outdoor unit.)
Beep Beep Beep
n th 1 st 2 nd
· · · Repeated
Off On On
On
Approx. 2.5 s 0.5 s 0.5 s
0.5 s
Number of blinks/beeps in pattern indicates
the check code in the following table
Beep Beep Beep
2 nd 3 rd n th
On On On Off
0.5 s 0.5 s 0.5 s Approx. 2.5 s
Symptom
Symptom
16
Beep Beep
1 st
2 nd
· · · Repeated
On On On
Approx. 3 s 0.5 s 0.5 s
Number of blinks/beeps in pattern indicates
the check code in the following table
Remark
Remark
For details, check the LED
display of the outdoor
controller board.
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