-
143
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'17 • PAC-T-256
Error code
Remote control:
LED
Green
Red
Indoor
Outdoor
Content
E5
Communication error during operation
Keeps flashing 2-time flash
Keeps flashing
See below
1. Applicable model
5. Troubleshooting
All models
Diagnosis
Countermeasure
Has the remote
control LCD returned to
normal state?
Power reset
NO
YES
NO
In case that the outdoor unit red LED stays OFF
Is the
connection of signal
wires at the outdoor unit
side OK?
Is the
connection of signal
wires between indoor-outdoor
units OK?
Has the remote
control LCD returned to
normal state?
Note (1) Inspect faulty connections (disconnection,
looseness) on the outdoor unit terminal block.
Power source reset
Note (2) Check for faulty connection or breakage of
signal wires between indoor-outdoor units.
YES
NO
YES
NO
YES
NO
In case that the outdoor unit red LED flashes 2-time
Repair signal wires.
Repair signal wires.
To the diagnosis of
“
WAIT
”
Unit is normal.
(Malfunction by temporary
noise, etc.)
Defective outdoor unit
control PCB (Defective
network communication
circuit)
➞
Replace.
Unit is normal.
(Malfunction by temporary
noise, etc.)
2. Error detection method
When normal communication
between indoor and outdoor
unit is interrupted for more than
2 minutes.
3. Condition of error displayed
Same as above is detected
during operation.
4. Presumable cause
• Unit No. setting error
• Broken remote control wire
• Faulty remote control wire
connection
• Faulty outdoor
unit control
PCB
Note:
Pressing the pump-down switch cancels communications between indoor and outdoor unit so that “communication
error-E5” is displayed on indoor unit and remote control, but it is normal.