Mitsubishi Electric FDF100VSXVD Technical Manual page 122

(ii) Outdoor unit
Remote controller Indoor control PCB
Green
Error code Red LED Red LED
LED (1)
Keeps
Stays OFF
flashing
Keeps
Stays OFF
flashing
Keeps
Stays OFF
flashing
Keeps
Stays OFF
flashing
Keeps
Stays OFF
flashing
Keeps
Stays OFF
flashing
Keeps
Stays OFF
flashing
Keeps
Stays OFF
flashing
Keeps
Keeps
flashing
Stays OFF
flashing
Keeps
Stays OFF
flashing
Keeps
Stays OFF
flashing
Keeps
Stays OFF
flashing
Keeps
Stays OFF
flashing
Keeps
Stays OFF
flashing
Keeps
Stays OFF
flashing
Keeps
Stays OFF
flashing
Keeps
Stays OFF
flashing
Keeps
Stays OFF
flashing
Keeps
Stays OFF
flashing
Note (1) * mark in the Description of trouble means that, in ordinary diagnosis, it cannot identify the cause definitely, and, if the trouble is repaired by replacing the part, it
is judged consequently that the replaced part was defective.
(2) This LED is installed on models FDC200, 250VS
(3) This LED is installed on models FDC71~140VNX, FDC100~140VS, FDC100~140VNX, FDC100~140VSX
(4) This LED is installed on models FDC200, 250VS
(iii) Optional controller in-use
Indoor unit control PCB
Error code Red LED Red LED
Keeps flashing Stays OFF Keeps flashing
Outdoor control PCB Outdoor inventer PCB
Yellow
Green Green
Red LED LED (3)or
LED LED (2)
Red LED
Keeps
1 time flash
flashing
Keeps
1 time flash
flashing
Keeps
Keeps
1 time flash
flashing
flashing
Keeps
1 time flash
flashing
Keeps
1 time flash
flashing
Keeps
1 time flash
flashing
2 times flash
Keeps
1 time flash or
flashing
6 times flash
1 time flash
Keeps
1 time flash or
flashing
5 times flash
Keeps
Keeps Keeps
flashing
1 time flash
flashing flashing
Keeps
1 time flash 7 times flash
flashing
Keeps
1 time flash
flashing
Keeps
flashing
Keeps
1 time flash
flashing
2 times flash
Keeps
1 time flash or
flashing
6 times flash
Keeps
1 time flash
flashing
Keeps
1 time flash
flashing
Keeps
flashing
Keeps
1 time flash
flashing
Keeps
1 time flash
flashing
Stays OFF or
5 times Keeps
4 times
flash flashing
flash
Keeps Keeps
1 time flash
flashing flashing
Outdoor unit control PCB
Green LED Red LED Green LED
Stays OFF Keeps flashing • Communication error (Defective communication circuit on the main unit of SC-SL2N-E or SC-SL3N-E) ete.
Location of trouble Description of trouble(1)
Installation or operating
• Higher outdoor heat exchanger temperature
condition
Outdoor heat exchanger
• Defective outdoor heat exchanger temperature thermistor
temperature thermistor
*• Defective outdoor control PCB (Defective temperature thermistor input
Outdoor control PCB
circuit)?
Installation or operating
• Higher discharge temperature
condition
Discharge pipe
• Defective discharge pipe temperature thermistor
temperature thermistor
*• Defective outdoor control PCB (Defective temperature thermistor input
Outdoor control PCB
circuit)?
Outdoor heat exchanger • Defective outdoor heat exchanger temperature thermistor, broken wire or poor
temperature thermistor connector connection
*• Defective outdoor control PCB (Defective temperature thermistor input
Outdoor control PCB
circuit)?
Outdoor air temperature • Defective Outdoor air temperature thermistor, broken wire or poor connector
thermistor connection
*• Defective outdoor control PCB (Defective temperature thermistor input
Outdoor control PCB
circuit)?
Discharge pipe • Defective discharge pipe temperature thermistor, broken wire or poor
temperature thermistor connector connection
*• Defective outdoor control PCB (Defective temperature thermistor input
Outdoor control PCB
circuit)?
Installation or operating
• Rising high pressure (Operation of 63H1) • Service valve closing operation
condition
Outdoor control PCB *• Defective outdoor control PCB (Defective 63H input circuit)?
Inverter PCB or radiator
• Power transistor overheat
fin
Outdoor control PCB
• Current cut (Anomalous compressor over-current)
compressor
Installation or operating
• Service valve closing operation
condition
Outdoor control PCB • Anomalous outdoor control PCB communication
Inverter PCB • Anomalous inverter PCB communication
Inverter PCB • Defective outdoor inverter PCB (Model FDC 71)
activefilter Defective active filter of control.
Outdoor fan motor • Anomalous outdoor fan motor
Outdoor control PCB *• Defective outdoor control PCB (Defective motor input circuit)?
Installation or operating
• Low pressure error • Service valve closing operation
condition
• Anomalous low pressure, broken wire of low pressure sensor or poor
Low pressure sensor
connector connection
Outdoor control PCB *• Defective outdoor control PCB (Defective sensor input circuit)?
Inverter PCB • Anomalous inverter PCB
Suction pipe • Defective suction pipe temperature thermistor, broken wire or poor connector
temperature thermistor connection
Outdoor control PCB *• Defective outdoor PCB (Defective thermistor input circuit)?
Low pressure sensor • Defective low pressure sensor
Outdoor control PCB • Defective outdoor control PCB (Defective sensor input circuit)?
Compressor underneath • Defective compressor underneath temperature thermistor (Models 200, 250
temperature thermistor only)
• Defective outdoor control PCB (Defective thermistor input circuit)? (Models
Outdoor control PCB
200, 250 only)
Operation status • Shortage in refrigerant quantity
Installation status • Service valve closing operation
Compressor inverter
• Anomalous compressor startup
PCB
Compressor • Anomalous compressor rotor position detection (Models 200, 250 only)
Description of trouble
- 121 -
'11 • PAC-T-160
Reference
Repair method
page
Repair
Replacement of
174
temperature thermistor
Replacement of PCB
Repair
Replacement, repair of
175
temperature thermistor
Replacement of PCB
Replacement, repair of
temperature thermistor
176
Replacement of PCB
Replacement, repair of
temperature thermistor
177
Replacement of PCB
Replacement, repair of
temperature thermistor
178
Replacement of PCB
Repair
179
Replacement of PCB
Replacement of PCB
180
or Repair
Replacement of PCB
182
Repair
Service valve opening
check
184
Replacement of PCB
Replacement 185
Replacement, repair
186
Replacement of PCB
Repair
Replacement, repair of
187
sensor
Replacement of control
PCB
Replacement of PCB 189
Replacement, repair of
temperature thermistor
190
Replacement of control
PCB
Replacement of sensor
191
Replacement of control
PCB
Replacement of
temperature thermistor
192
Replacement of control
PCB
Repair
193
Service valve opening
check
Replacement 194
Replacement 196
Repair method
Replacement