Communication Error Between Master And Slave Indoor Units - Mitsubishi Electric FDT125VNVF Technical Manual

Error code
E14
Remote controller:
1. Applicable model
All models
2. Error detection method
When communication error
between master and slave indoor
units occurs
3. Condition of Error displayed
Same as above
4. Presumable cause
• Unit address setting error
• Broken remote controller wire
• Defective remote controller
wire connection
• Defective indoor control PCB
Note:
LED Green Red
Keeps flashing 3 times flash
Indoor
Keeps flashing Stays Off
Outdoor
5. Troubleshooting
Diagnosis
Is it
OK the unit
address setting for master
and slave indoor
units?
YES
Isn't
the remote
controller wiring between
indoor units
defective?
NO
Is it
restored by resetting the
power supply?
Note (1) Set dip switches SW5-1 and SW5-2 as shown in the following table.
(Factory default setting – "Master")
Master
SW5-1 OFF
Dip
switch
SW5-2 OFF
381
-
Content
Communication error
between master and slave indoor units
NO
YES
NO
YES
Indoor unit
Slave-a Slave-b
OFF ON
ON OFF
-
'12 • PAC-T-174
Countermeasure
Correct unit address setting.
Correct wiring.
Defective indoor control
PCB Replace.
• Malfunction by noise
• Check surrounding
environment.