'19 • PAC-SM-309
-
99
-
E1
Remote control
communication circuit error
Keepsashing
Stays OFF
Keepsashing
Stays OFF
1. Applicable model
5. Troubleshooting
All models
Diagnosis Countermeasure
Is it possible to
reset normally by the
power reset?
Does the drain
pump restart automatically
1 minute later?
YES
YES
NO
Note (1) Only indoor unit
with drain pump
Turn SW7-1 to OFF. ➝ ON
Remove the wire
③ connecting
between indoor/outdoor units.
Connect the wire ③ connecting
between indoor/outdoor units.
Power source reset
NO
（
1）
Malfunction by noise
Check peripheral
environment.
Defective indoor unit control
PCB
➞
Replace.
Move to E5.
(Communication error
during operation) check.
2. Error detection method
When normal communication
between the remote control and
the indoor unit is interrupted
for more than 2 minutes.
(Detectable only with the
remote control)
3 .
Condition of error displayed
Same as above
4. Presumable cause
• Defective communication
circuit between remote
control-indoor unit
• Noise
• Defective remote control
• Faulty indoor unit control PCB
Note:
If the indoor unit cannot communicate normally with the remote control for 180 seconds, the indoor unit PCB starts to reset
automatically.
Error code
Remote control:
LED Green Red
Indoor
Outdoor
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