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436
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'13 • PAC-T-197
E49
1. Applicable model
5. Troubleshooting
Models FDC71-140
Diagnosis
Countermeasure
NO
YES
Is the low
pressure sensor connection OK
(at PCB side)?
NO
Is the
insulation resistance more than 100M
Ω
?
at DC500V?
Is the
pressure difference less than
0.2MPa?
Is the pressure
0MPa displayed on the remote
control?
NO
YES
Check the low pressure value during
following state from the remote control
�
Compressor is stopping
�
Compressor is operating
During
both
�
and
�
state low
pressure detected at around 0MPa
without any
fluctuation.
YES
Check the insulation resistance of pressure sensor.
YES
After connecting the gauge manifold on the low pressure
line, measure at the state
�
above. Compare the result
with the value indicated on the remote control.
NO
*
NO
To checking of refrigerant
amount, refrigerant circuit,
etc.
YES
Connect the pressure sensor of
spare part to outdoor control
PCB in the condition open to
atmosphere.
To next page
Correct.
Replace low pressure
sensor.
Defective outdoor control
PCB
➞
Replace.
Replace low pressure
sensor.
2. Error detection method
Detected by low pressure drop
and suction superheat
3. Condition of Error displayed
➀
When the low pressure sensor
detects 0.079MPa or lower
for 15 seconds continuously,
compressor stops and it
restarts automatically after
3-minutes delay. And if this
anomaly occurs 3 times
within 60 minutes,
➁
10 minutes after the
compressor starts, if the
low pressure sensor detects
0.15MPa or lower for 60
minutes continuously and
compressor suction superheat
is detected 30degC or higher
for 60 minutes continuously.
And if this anomaly occurs 3
times within 60 minutes,
➂
If low pressure sensor
detects 0.079MPa or lower
for 5 minutes continuously
(including the compressor
stop status),
4. Presumable cause
• Defective outdoor control
PCB
• Defective low pressure sensor
connector
• Defective low pressure sensor
• Defective suction pipe
temperature thermistor
connector
• Defective suction pipe
temperature thermistor
Note:
* Connect the gauge manifold to the service valve check joint during cooling, or connect it to the check joint at internal
piping of outdoor unit during heating.
Error code
Remote control:
LED
Green
Red
Outdoor control PCB
Outdoor inverter
PCB
1-time flash
Keeps flashing
Indoor control PCB
Stays OFF
Keeps flashing
Content
Keeps flashing
Yellow
Low pressure error or
low pressure sensor anomaly (1/2)
(Models FDC71-140)
Summary of Contents for V Multi 100VNX
Page 98: ... 97 13 PAC T 197 Models FDT100VF1 125VF 140VF H H H H H C B A F G D G PJF000Z285 A ...
Page 101: ... 100 13 PAC T 197 Models FDEN60VF 71VF1 C2 C1 A B A B D C1 C2 C1 C2 E G F C PFA003Z817 ...
Page 116: ... 115 13 PAC T 197 b Wireless remote control RCN E1R 60 17 150 Unit mm ...
Page 291: ... 290 13 PAC T 197 261 12 PAC T 173 ー K ...
Page 590: ... 589 13 PAC T 197 3 8 SUPER LINK E BOARD SC ADNA E F ...
Page 591: ... 590 13 PAC T 197 ...
