Mitsubishi SCM40ZS-S, Техническое руководство

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221
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'16 • SCM-T-199
(ii) Outdoor unit
Remote control Indoor control PCB
Outdoor
main PCB
Location of trouble Description of trouble Repair method
Reference
page
Error code Red LED Red LED
Green
LED
Red
LED (2)
Keeps
flashing
Stays OFF
Keeps
flashing
2-time
flash
Installation, operation status • Higher outdoor heat exchanger temperature Repair
260
Outdoor heat exchanger
temperature sensor
• Defective outdoor heat exchanger temperature sensor
Replacement, repair
of temperature
sensor
Outdoor main PCB *• Defective outdoor main PCB (Defective temperature sensor input circuit)?
Replacement of
PCB
Stays OFF
Keeps
flashing
5-time
flash
Installation, operation status • Higher discharge temperature Repair
261
Discharge pipe temperature
sensor
• Defective discharge pipe temperature sensor
Replacement, repair
of temperature
sensor
Outdoor main PCB *• Defective outdoor main PCB (Defective temperature sensor input circuit)?
Replacement of
PCB
Stays OFF
Keeps
flashing
8-time
flash
Outdoor heat exchanger
temperature sensor
• Defective outdoor heat exchanger temperature sensor, broken wire or poor
connector connection
Replacement, repair
of temperature
sensor 262
Outdoor main PCB *• Defective outdoor main PCB (Defective temperature sensor input circuit)?
Replacement of
PCB
Stays OFF
Keeps
flashing
8-time
flash
Outdoor air temperature
sensor
• Defective outdoor air temperature sensor, broken wire or poor connector
connection
Replacement, repair
of temperature
sensor 263
Outdoor main PCB *• Defective outdoor main PCB (Defective temperature sensor input circuit)?
Replacement of
PCB
Stays OFF
Keeps
flashing
8-time
flash
Discharge pipe temperature
sensor
• Defective discharge pipe temperature sensor, broken wire or poor connector
connection
Replacement, repair
of temperature
sensor 264
Outdoor main PCB *• Defective outdoor main PCB (Defective temperature sensor input circuit)?
Replacement of
PCB
Stays OFF
Keeps
flashing
1-time
flash
Outdoor main PCB,
compressor
• Current cut (Anomalous compressor over-current)
Replacement of
PCB
265• 266
Installation, operation status • Service valve closing operation Repair
Stay OFF
Keeps
flashing
4-time
flash
Outdoor main PCB • Anomalous outdoor main PCB commuication
Replacement of
PCB
267
Outdoor sub PCB • Anomalous outdoor sub PCB commuication
Stays OFF
Keeps
flashing
2-time
flash
Outdoor sub PCB • Defective active filter
Repair
PCB replacement
268
Stays OFF
Keeps
flashing
ON
Fan motor • Defective fan motor
Replacement 269
Outdoor main PCB • Defective outdoor main PCB
Stays OFF
Keeps
flashing
1-time
flash
Power transistor error
(outdoor main PCB)
• Power transistor error
Replacement of
PCB
270
Stays OFF
Keeps
flashing
8-time
flash
Outdoor suction pipe sensor
• Defective suction pipe temperature sensor, broken wire or poor connector
connection
Replacement, repair
of temperature
sensor 271
Outdoor sub PCB • Defective outdoor sub PCB (Defective temperature sensor input circuit)?
Replacement of
PCB
Stays OFF
Keeps
flashing
2-time
flash
Operation status • Shortage in refrigerant quantity Repair
272
Installation status • Service valve closing operation
Service valve
opening check
Stays OFF
Keeps
flashing
3-time
flash
• Overload operation
• Overcharge
• Compressor locking
• Current safe stop Replacement 273
Stays OFF
Keeps
flashing
2-time
flash
Compressor, outdoor main
PCB
• Anomalous compressor startup Replacement 274
Stays OFF
Keeps
flashing
7-time
flash
Compressor • Anomalous compressor rotor lock Replacement 275
Notes (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 model SCM50ZS-S.