Self-Check; [Output Pattern A] Errors Detected By Indoor Unit; [Output Pattern B] Errors Detected By Unit Other Than Indoor Unit (Outdoor Unit, Etc.) - Mitsubishi Electric M-SERIES Installation Manual

15.3. Self-check

Refer to the installation manual that comes with each remote controller for details.
RF thermostat is not established.

[Output pattern A] Errors detected by indoor unit

IR wireless remote controller
Beeper sounds/OPERATION INDICATOR lamp flashes
(Number of times)
1
2
3
4
5
6
7
8
9
10
11
12
No sound
[Output pattern B] Errors detected by unit other than indoor unit (outdoor unit,
etc.)
IR wireless remote Beeper sounds/
controller
INDICATOR lamp
(Number of times)
Beeper sounds/
OPERATION
INDICATOR lamp flashes
(Number of times)
1
2
3
4
5
6
7
8
9
10
Specifications are subject to change without notice.
SVZ-KP12,18, 24, 30, 36NA
Wired remote controller
RF thermostat
Check code
P1
P2, P9
E6, E7
P4
P5
P6
EE
P8
E4
–
–
Fb
– –
OPERATION
flashes
Check code
E9 Indoor/outdoor unit communication error (Transmitting error) (Outdoor unit)
UP
U3, U4
UF Compressor overcurrent interruption (When compressor locked)
U2 Abnormal high discharging temperature/49C worked/ insufficient refrigerant
U1, Ud Abnormal high pressure (63H worked)/ Overheating safeguard operation
U5
U8
U6 Compressor overcurrent interruption/Abnormal of power module
U7 Abnormality of super heat due to low discharge temperature
51
Symptom
Intake sensor error
Pipe (Liquid or 2-phase pipe) sensor error
Indoor/outdoor unit communication error
Drain sensor error
Drain pump error
Freezing/Overheating safeguard operation
Communication error between indoor and outdoor units
Pipe temperature error
Remote controller signal receiving error
–
–
Indoor unit control system error (memory error, etc.)
No corresponding
Symptom
Compressor overcurrent interruption
Open/short of outdoor unit thermistors
Abnormal temperature of heat sink
Outdoor unit fan protection stop
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