Mitsubishi Electric Mr.SLIM PU-P71VHA Service Manual page 36

• 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
8
9
10
11
12
–
–
[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
4
5
6
7
8
9
10
11
12
13
14
*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.
OC379F
Beep Beep Beep Beep
1 2 3 n
st nd rd th
On On On
On
0.5 sec. 0.5 sec. 0.5 sec.
0.5 sec.
Beep Beep Beep
st nd
1 2
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 (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
E6,E7 Indoor/outdoor unit communication error
P4 Drain sensor error/Float switch connector open
P5 Drain pump error
PA Forced compressor stop
P6 Freezing/Overheating protection operation
EE Communication error between indoor and outdoor units
P8 Pipe temperature error
E4, E5 Remote controller signal receiving error
– –
– –
Fb Indoor unit control system error (memory error, etc.)
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)
–
–
Open/short of thermistor(TH4/TH3) / Abnormal thermistor (TH6)
U3,U4
UF Compressor overcurrent interruption (When compressor locked)
U2 Abnormal discharge temperature / Abnormal compressor surface temperature
Abnormal high pressure (63H operated)/Overheating protection
U1,Ud
(over-load operation protection / abnormal fan)
–
–
–
–
Compressor overcurrent interruption
U6
–
–
UH Current sensor error
– –
– –
Thermal relay (51C) has been tripped/ Abnormal high pressure
UA, UE, UL
(Ball valves close)/ Abnormal low pressure (63L operated)
Beep Beep
1 2 · · · Repeated
st nd
Off On On
Approx. 2.5 sec. 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. 0.5 sec. Approx. 2.5 sec.
Symptom
Symptom
36
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
As for indoor
unit, refer to
indoor unit's
service manual.
For details, check
the LED display
of the outdoor
controller board.
Remark
Remark