Mitsubishi Electric SLZ Series Technical & Service Manual page 13

[Output pattern A] Errors detected by indoor unit
Wired remote
Wireless remote controller
Beeper sounds/OPERATION
INDICATOR lamp blinks
(Number of times)
1 P1
2 P2, P9
3 E6, E7
4 P4
P5
5
PA
6 P6
7 EE
8 P8
9 E4, E5
10 —
11 PB(Pb)
12 FB(Fb)
14 PL
No sound E0, E3
No sound E1, E2
No sound — — — —
[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.
Wired remote
Wireless remote controller
Beeper sounds/OPERATION
INDICATOR lamp blinks
(Number of times)
1
E9
2
UP
3
U3, U4
4
UF
5 U2
6
U1, Ud
7
U5
8
U8
9 U6
10
U7
11
U9, UH
12
—
13
—
14
Others
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 seconds)" after the initial 2 beeps to confirm the self-check start signal was received,
the specified refrigerant address is incorrect.
• On wireless remote controller
The continuous buzzer sounds from receiving section of indoor unit.
Blink of operation lamp
• On wired remote controller
Check code displayed in the LCD.
TCH118
controller
Check code
Intake sensor error
Pipe (liquid or 2-phase pipe) sensor error
Indoor/outdoor unit communication error
Float switch connector open
Drain pump error
Forced compressor error
Freezing (during cooling operation)/Overheating protection operation (during
heating operation)
Assembly error (system error)
Pipe temperature error
Communication error between wired remote controller and indoor unit
—
Indoor unit fan motor error
Indoor unit control system error (memory error, etc.)
Refrigerant circuit abnormal
Remote controller transmission error
Remote controller control board error
No corresponding
controller
Check code
Indoor/outdoor unit communication error
Compressor overcurrent interruption
Open/short of outdoor unit thermistors
Compressor overcurrent interruption (When compressor locked)
Abnormal high discharging temperature/49C worked/insufficient refrigerant
Abnormal high pressure (63H worked)/Overheating protection operation
Abnormal temperature of heat sink
Outdoor unit fan protection stop
Compressor overcurrent interruption/Abnormal of power module
Abnormality of super heat due to low discharge temperature
Abnormality such as overvoltage or voltage shortage and abnormal synchro-
nous signal to main circuit/Current sensor error
—
—
Other errors (Refer to the technical manual for the outdoor unit.)
Symptom
Symptom
13
Remark
Remark
For details, check the LED
display of the outdoor
controller board.
Continued to the next page