Mitsubishi Electric SRK100VNPZJX, Technical Manual

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428
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E5
Communication error during operation
ON 6 times flash
Keeps flashing See below
1. Applicable model
5. Troubleshooting
All models
Diagnosis Countermeasure
Has the remote
controller 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
controller LCD returned to
normal state?
Note (1) Inspect faulty connections (disconnection,
looseness) on the outdoor unit terminal block.
Power 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-times
Repair signal wires.
Repair signal wires.
To the diagnosis of
“
WAIT
”
Unit is normal.
(Malfunction by temporary
noise, etc.)
Defective outdoor 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 controller wire
• Faulty remote controller wire
connection
• Faulty outdoor 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 controller, but it is normal.
Error code
Remote controller:
Indoor
display
RUN light TIMER light
Green LED Red LED
Outdoor
control PCB
Content
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428
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'12 • PAC-T-174