Mitsubishi Heavy Industries FDT28KXE6A Service Manual page 67

Error code
E2
Remote controller:
-
7-segment display:
1. Applicable model
All models
2. Error detection method
More than 129 indoor units are
connected in the same superlink
system.
Duplicated indoor unit address
3. Condition of error displayed
Same as above
4. Presumable cause
• Number of connected indoor
units exceeds the limitation.
• Duplicated indoor unit
address
• Indoor control PCB anomaly
Note:
LED Green Red
Keeps flashing Keeps flashing
Indoor
Keeps flashing Stays Off
Outdoor
5. Troubleshooting
Diagnosis
Is the number of
connected indoor units up
to 128 units?
YES
Is the different
address No. assigned to each
indoor unit?
YES
Reset the power supply and restart.
Caution:
Unless the power
supply is reset,
addresses will not
be confirmed.
Is E2 displayed?
65
–
Content
Duplicated indoor unit address
NO
NO
NO
YES
–
Countermeasure
Review number of
connected units.
Correct indoor unit address
setting.
Implement test run.
Replace indoor control
PCB. *
* Before replacement,
confirm whether the
rotary switch for address
setting is not damaged.
(It was experienced that
No. 5 on rotary switch
was not recognized.)