Mitsubishi SRK100VNXWPZSX, Руководство по обслуживанию

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140
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'20 • PAC-SM-351
INSPECT I/U
INSPECT I/U
(Connection of 3 units or more remote control)
– –
Keeps flashing 2-time flash
1. Applicable model
5. Troubleshooting
All models
Diagnosis Countermeasure
Reduce to 2 units or less.
Change remote control
setting to “Master”. (SW1
on remote control PCB)
Set address again. (SW1 on
interface kit PCB)
Change to master. (SW3-1,
2 on interface kit PCB)
Correct.
Correct.
Defective outdoor unit
control PCB
➞
Replace.
Defective indoor unit
control PCB
➞
Replace.
Broken connecting wire
➞
Correct.
Defective interface kit
PCB
➞
Replace.
2. Error detection method
Indoor unit cannot communicate
for more than 30 minutes after
the power on with remote
control.
3. Condition of error displayed
Same as above
4. Presumable cause
• Improper setting
• Surrounding environment
• Defective remote control
communication circuit
• Faulty indoor unit control PCB
• Faulty outdoor unit control PCB
• Faulty interface kit PCB
Note:
If any error is detected 30 minutes after displaying “
WAIT
” on the remote control, the display changes to
“INSPECT I/U”.
NO
NO
NO
NO
NO
Are more than
3 units of remote control
connected?
Does remote
control display
“Slave”?
YES
Do more than
one interface kit have the
same address?
Is it set to
a slave interface kit?
(SW3-1, 2)
Is there loose
or wrong connection at the termanal
of wiring between indoor and
outdoor units?
Is the
grounding wire connected
properly?
Is approx.
DC20V detected between
➁
-
➂
on the outdoor unit terminal
block?
Is approx.
DC20V detected between
➁
-
➂
on the interface kit terminal
block?
YES
YES
YES
YES
NO
NO
NO
YES
YES
YES
YES
Is approx.
DC20V detected between
➁
-
➂
on the indoor unit terminal
block?
NO
Error code
Remote control:
Indoor
display
RUN light TIMER light
Green LED Red LED
Outdoor unit
control PCB
Content