Mitsubishi Heavy Industries KXZ Series Service Manual page 74

Error code
Remote control:
WAIT
7-segment display: –
1. Applicable model
All models
(In case of fuse blown, how
to check the unit before
replacement of fuse.)
2. Error detection method
3. Condition of error displayed
4. Presumable cause
• Fuse blown
• Noise filter anomaly
• Anomalous connection of
wire between PCBs
• Indoor control PCB anomaly
• Remote control anomaly
• Breakage of connecting wires
of remote control
• Outdoor control PCB anomaly
Note:
LED Green Red
Keeps flashing Stays OFF
Indoor
Keeps flashing Keeps flashing
Outdoor
5. Troubleshooting
Diagnosis
Isn't
there any short circuit
between phases of noise
filter?
NO
Isn't
there any crack or damage
on power transistor
module or diode stack?
NO
Isn't
there any anomaly on
reactor?
NO
72
-
Content
WAIT
YES
Replace noise filter
YES
Replace inverter PCB
YES
Replace reactor
-
'14 • KX-SM-221
(2)
Countermeasure
Replace fuse.