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422
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'12 • PAC-T-173
E59
1. Applicable model
5. Troubleshooting
Models FDC71-140
Diagnosis
Countermeasure
Is DC15V
detected between
②
and
③
on CNI3?
Is the
pressure equalized
at starting OK?
Is the
insulation resistance
and coil resistance of
compressor OK?
In case that the compressor
does not start at all and no
sound or vibration exists
Is
power supply voltage
OK?
NO
NO
NO
For
FDC71-140VNX
⑴
⑵
⑵
For
FDC100-140VSX
YES
YES
Is DC15V
detected after disconnecting
outdoor fan motor?
YES
Note(1) How to check voltage
at CN13
⇒
See E51
Note(2) Under anomalous
conditions, the voltage
becomes less than
DC14V
Replace outdoor control PCB
Can compressor startup?
YES
NO
NO
NO
YES
YES
To next page
Check the power supply
voltage and correct it
Replace inverter PCB
If not solved yet, replace
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Replace outdoorfan motor.
OK
Check refrigerant amount
and refrigerant circuit.
Replace compressor
2. Error detection method
When it fails to change over to
the operation for rotor position
detection of compressor motor
(If the compressor speed cannot
increase 11Hz or higher)
3. Condition of Error displayed
If the compressor fails to startup
for 20 times (10 patterns x2
times) continuously.
4. Presumable cause
• Outdoor fan motor anomaly
• Outdoor control PCB anomaly
• Inverter PCB anomaly
• Anomalous power supply
voltage
• Insufficient or Excessive
refrigerant amount
• Faulty component for
refrigerant circuit
• Compressor anomaly
(Motor or bearing)
Note: Insulation resistance
•
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migrated in the refrigerant oil in compressor. If the electric leakage breaker is activated due to low insulation resistance, check followings.
Check whether the insulation resistance can recover or not, after 6 hours has passed since power ON.
(By energize the crankcase heater, liquid refrigerant migrated in the refrigerant oil in compressor can be evaporated)
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(As inverter PAC units has inverter, in order to prevent from improper operation, be sure to use the breaker of high-harmonic type)
Error code
Remote controller:
LED
Green
Red
Outdoor control PCB
Outdoor inverter
PCB
5 times flash
Keeps flashing
Indoor control PCB
Stays OFF
Keeps flashing
Content
Stays off
Yellow LED
Compressor startup failure (1/2)
(Models FDC71-140)
Summary of Contents for FDC Series
Page 95: ... 94 12 PAC T 173 Models FDT100VF 125VF 140VF H H H H H C B A F G D G PJF000Z285 ...
Page 98: ... 97 12 PAC T 173 Models FDEN60VF 71VF C 2 C 1 A B A B D C 1 C 2 C 1 C 2 E G F B PFA003Z817 ...
Page 113: ... 112 12 PAC T 173 b Wireless remote controller RCN E1R 60 17 150 Unit mm ...
Page 278: ... 277 12 PAC T 173 ー K ...
Page 346: ... 345 12 PAC T 173 Power PCB 1BSU OVNCFS 4GRNCEG VJG 2 ...
Page 518: ... 517 12 PAC T 173 3 5 SUPER LINK E BOARD SC ADNA E F SL2NA E and SL3N AE BE to control ...
Page 519: ... 518 12 PAC T 173 ...
