Mitsubishi Heavy Industries FDT28KXE6A Service Manual page 79

Error code
E30
Remote controller:
E30
7-segment display:
1. Applicable model
Outdoor unit
2. Error detection method
3. Condition of error displayed
4. Presumable cause
• Indoor control PCB anomaly
• Outdoor control PCB anomaly
Note:
LED Green Red
Keeps flashing Stays Off
Indoor
Keeps flashing 1 time flash
Outdoor
5. Troubleshooting
Diagnosis
wiring connection between
indoor and outdoor units
between L1-L2, L2-L3
and L3-L1 at the terminal block on
outdoor unit AC380/415V
between L1-N at the terminal
block on indoor unit
77
–
Content
Unmatch connection of
indoor and outdoor unit
Is the
NO
correctly?
YES
Is the voltage
NO
respectively?
YES
Is
the voltage
NO
AC220/240V?
YES
–
Countermeasure
Correct the wiring
Replace outdoor control
PCB
Disconnection or breakage
of wire between indoor and
outdoor unit
Replace indoor unit PCB