Mitsubishi Electric SUZ-M25VA Technical & Service Manual page 31

Split-type, heat pump air conditioners
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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 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 blink
Off
pattern
Approx. 2.5 s
Self-check
starts
(Start signal
received)
[Output pattern A] Errors detected by indoor unit
[Output pattern A] Errors detected by indoor unit
Wireless remote controller
Wireless remote controller
Beeper sounds/OPERATION
Beeper sounds/OPERATION
INDICATOR lamp blinks
(Number of times)
INDICATOR lamp blinks
1
(Number of times)
2
1
3
2
4
3
5
4
6
5
7
9
6
12
7
14
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)
[Output pattern B] Errors detected by unit other than indoor unit (outdoor unit, etc.)
Wireless remote controller
1
Beeper sounds/OPERATION
2
INDICATOR lamp blinks
3
(Number of times)
14
1
1. If the beeper does not sound again after the initial 2 beeps to confirm the self-check start signal was received and
Notes:
2
the OPERATION INDICATOR lamp does not come on, there are no error records.
3
2. If the beeper sounds 3 times continuously "beep, beep, beep (0.4 + 0.4 + 0.4 seconds)" after the initial 2 beeps to confirm
the self-check start signal was received, the specified refrigerant address is incorrect.
14
*The check code in the parenthesis indicates PAR-32MAA model.
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-3xMAA model.("x" represents 0 or later).
OCH684
Beep Beep Beep
Beep
1
2
3
n
st
nd
rd
th
On
On
On
On
0.5 s
0.5 s
0.5 s
0.5 s
Beep Beep Beep
1
st
2
nd
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 (i.e., n=5 for "U2")
Wired remote controller
Wired remote controller
Check code
Check code
P1
Intake sensor error
P2
Pipe (TH2) sensor error
P9
Pipe (TH5) sensor error
P1
Intake sensor error
Indoor/outdoor unit communication error
E6,E7
P2
Pipe (TH2) sensor error
P4
Drain sensor error/Float switch connector (CN4F) open
P9
Pipe (TH5) sensor error
P5
Drain pump error
E6,E7
Indoor/outdoor unit communication error
PA
Forced compressor stop (due to water leakage abnormality)
P4
Drain sensor error/Float switch connector (CN4F) open
P6
Freezing/Overheating protection operation
P5
Drain pump error
EE
Communication error between indoor and outdoor units
PA
Forced compressor stop (due to water leakage abnormality)
E4, E5
Remote controller signal receiving error
P6
Freezing/Overheating protection operation
Indoor unit control system error (memory error, etc.)
Fb (FB)*
EE
Communication error between indoor and outdoor units
PL
Abnormality of refrigerant circuit
E4,E5
Remote controller signal receiving error
E0, E3
Remote controller transmission error
Fb (FB)*
Indoor unit control system error (memory error, etc.)
E1, E2
Remote controller control board error
PL
Abnormality of refrigerant circuit
E0,E3
Remote controller transmission error
Wired remote controller
E1,E2
Remote controller control board error
Check code
Indoor/outdoor unit communication error
Wired remote controller
E9
(Transmitting error) (Outdoor unit)
Compressor overcurrent interruption
UP
Check code
Open/short of outdoor unit thermistors
U3, U4
PL or others
Abnormlity of refrigerant circuit or other errors (Refer to the technical manual for the outdoor unit.)
Indoor/outdoor unit communication error
E9
(Transmitting error) (Outdoor unit)
UP
Compressor overcurrent interruption
U3,U4
Open/short of outdoor unit thermistors
Abnormality of refrigerant circuit or other errors
PL or Others
(Refer to the technical manual for the outdoor unit.)
Beep Beep
1
2
· · · Repeated
st
nd
Off
On
On
Approx. 2.5 s
0.5 s
0.5 s
Number of blinks/beeps in pattern indicates
the check code in the following table
Beep
3
rd
n
th
On
On
Off
0.5 s
0.5 s
Approx. 2.5 s
Symptom
Symptom
Symptom
Symptom
31
Beep
Beep
1
2
· · · Repeated
st
nd
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
As for indoor
unit, refer to
As for indoor
indoor unit's
unit, refer to
service manual.
i n d o o r u n i t ' s
service manual.
Remark

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