Mitsubishi Electric e Series Service Handbook page 126

[ IX Troubleshooting ]
Error
Error type
code *1
530* Inverter ACCT sensor/circuit fault
error
(117)
Open-circuited IPM/loose ACCT sensor
530*
(119)
530* Faulty wiring
(120)
5114 THHS sensor/circuit fault
(0*)
Serial communication error
0403
(0*)
Remote Remote controller signal reception error 1
6831
control-
ler error
(incl.
Remote controller signal transmission error
6832
remote
control-
Remote controller signal reception error 2
ler wir-
6834
ing
fault)
Remote controller over current
6833
Analog input error
4126
(Control board (MAIN) CN210)
Communication error between the main and sub units
6500
Communication error between the MAIN and SUB
circuits
6600 Transmission line power supply PCB fault
Communication error between the main and sub units
6602
(Simple multiple unit control mode)
6603
6606
6607
6608
Expansion board error
0206
Capacity code error
7100
7105 Address setting error
Prevention error of malfunction
7109
Combination error
7130
8000 Normal
*1: If an error occurs, error codes shown above will appear in the 4-digit digital display on the PCB and the remote controller.
*2: Definition of symbols in the "Error reset" column.
: Errors that can be reset if the remote reset setting on the unit is set to "Enable" (factory setting)
Errors that cannot be reset if the remote reset setting on the unit is set to "Disable"
: Errors that cannot be reset
: Errors that will be automatically cancelled once its cause is removed
*3: Power failure will be detected as an error only when the "Automatic recovery after power failure" setting on the unit is set to "Disable."
(The default setting for the "Automatic recovery after power failure" setting is "Enable.")
*4: Before resetting this error, remove its causes. Resuming operation without removing the causes of heat exchanger freeze up will cause heat exchanger damage.
*5: "*" shows types of components. (0/1: COMP A, 2: COMP B, 5: FAN A, 6: FAN B)
HWE20010
Cause
(Installation/Setting error)
-
-
-
-
-
Remote controller cable is not
connected.
Broken wiring
Communication error due to external
noise interference
Communication error due to external
noise interference
Remote controller cable short circuit
Remote controller malfunction
Analog input type fault
(SW6-1, SW6-2)
-
Communication error due to external
noise interference
Control failure
Other capacity units in a group
Address setting except for 01 - 50
Change setting value that requires
power supply reset
Different model in system
-
- 117 -
Cause
(Parts problems)
• INV board fault
• ACCT sensor fault
• Broken compressor wiring
• INV circuit fault (IPM error etc.)
• INV board fault
• INV board fault
• Communication error between control
board and INV board, Fan INV board
(noise interference, broken wiring)
• Broken remote controller wiring
• Main control board communication circuit
fault
• Main control board communication circuit
fault
• Main control board communication circuit
fault
• Broken remote controller wiring
• Broken or open analog signal output
device wiring (CN210)
-
• Broken wiring to the transmission power
supply circuit board (between the main
and sub units)
• Transmission power supply PCB
communication circuit fault
• Wiring, connector fault between
expansion and main control board
• Expansion board, main control board
fault
• Group setting fault
• Main control board fault
• System and switch setting check
• Different model check
• Main control board fault
-
Error reset *2
Operation SW
Selector Remote
switch controller
GB