Error code
Remote control:
7-segment display:
LED Green Red
Indoor
Outdoor
Content
'14 • KX-SM-221
[No display]
Stays OFF Stays OFF
Stays OFF Stays OFF
1. Applicable model
5. Troubleshooting
All models
(No display on the remote
control after power ON.)
Diagnosis Countermeasure
YES
YES
YES
NO
NO
NO
No display on the remote
control after power ON.
Is DC10V
or higher between X-Y
detected at remote
control terminal?
Is DC10V
or higher between X-Y
wires detected when
removing remote
control?
Are
connecting wires between
indoor and outdoor units
connected properly?
Remote control anomaly.
Remote control anomaly.
Correct connecting wire.
Indoor control PCB
anomaly.
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:
[No display]
-
77
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