Mitsubishi Heavy Industries 112KXE6, Service Manual, Page: 77 / 209

Error code
Remote controller:
7-segment display:
LED Green Red
Indoor
Outdoor
Content
–
74
–
E32
E32
Open L3 Phase on
power supply at primary side
Keeps flashing Stays Off
Keeps flashing 1 time flash
1. Applicable model
5. Troubleshooting
Outdoor unit
Diagnosis Countermeasure
Is the power
supply voltage (between phases) at
the primary side OK?
Save data for 30 minutes before
stopping in Mente PC
Does E32 recur?
YES
Reset the power supply
and restart operation.
NO
YES
NO
Check and save the data of
operating condition.
Check the conditions
whether it occurs
immediately after the
power on or during
operation or stopping.
(It will be useful to
persuade the customer why
an improvement of power
supply is required by
showing these data)
Propose an improvement to
the customer.
Check it, as much as
possible, under the
operating conditions for
30 minutes before error
occurred.
Replace outdoor control
PCB.
Wait and see without taking
any action.
2. Error detection method
By Checking the power supply
voltage at primary side of the
outdoor control PCB
(Check only L3 phase)
3. Condition of error displayed
When the power supply voltage
between L1-L3 or L2-L3
becomes 0V and/or the current
of L3 decrease to 0A
4. Presumable cause
• Anomalous power supply at
primary side
• Outdoor control PCB
anomaly.
Note: