Mitsubishi SCM71ZJ-S1 User Manual

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79
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'11 • SCM-SM-110
(b) Model SCM100, 125
Remote controller Indoor control PCB
Outdoor
control PCB
Location of trouble Description of trouble Repair method
Reference
page
Error code Red LED Red LED
Green
LED
Red LED
Keeps
flashing
Stays OFF
Keeps
flashing
2 times
flash
Installation, cooling operation status • Higher outdoor high pressure Repair
117
High pressure sensor • Defective high pressure sensor
Replacement, repair
of temperature
sensor
Outdoor control PCB *• Defective outdoor control PCB (Defective high pressure sensor input circuit)?
Replacement of
PCB
Stays OFF
Keeps
flashing
5 times
flash
Installation, operation status • Higher discharge temperature Repair
118
Discharge pipe temperature
sensor
• Defective discharge pipe temperature sensor
Replacement, repair
of temperature
sensor
Outdoor control PCB *• Defective outdoor control PCB (Defective temperature sensor input circuit)?
Replacement of
PCB
Stays OFF
Keeps
flashing
8 times
flash
Outdoor heat exchanger
temperature sensor
• Defective outdoor heat exchanger temperature sensor, broken wire or poor
connector connection
Replacement, repair
of temperature
sensor
119
Outdoor control PCB *• Defective outdoor control PCB (Defective temperature sensor input circuit)?
Replacement of
PCB
Stays OFF
Keeps
flashing
8 times
flash
Outdoor air temperature
sensor
• Defective outdoor air temperature sensor, broken wire or poor connector
connection
Replacement, repair
of temperature
sensor
120
Outdoor control PCB *• Defective outdoor control PCB (Defective temperature sensor input circuit)?
Replacement of
PCB
Stays OFF
Keeps
flashing
8 times
flash
Discharge pipe temperature
sensor
• Defective discharge pipe temperature sensor, broken wire or poor connector
connection
Replacement, repair
of temperature
sensor
121
Outdoor control PCB *• Defective outdoor control PCB (Defective temperature sensor input circuit)?
Replacement of
PCB
Stays OFF
Keeps
flashing
2 times
flash
Installation, Heating operation
status
• Higher outdoor high pressure Repair
122 High pressure sensor • Defective high pressure sensor
Replacement, repair
of temperature
sensor
Outdoor control PCB • Defective outdoor control PCB (Defective high pressure sensor input circuit)?
Replacement of
PCB
Stays OFF
Keeps
flashing
1 time
flash
Power transistor • Power transistor overheat
Replacement of
PCB or Repair
123
Stays OFF
Keeps
flashing
1 time
flash
Outdoor main PCB,
compressor
• Current cut (Anomalous compressor over-current)
Replacement of
PCB
124•125
Installation, operation status • Service valve closing operation Repair
Stay OFF
Keeps
flashing
4 times
flash
Outdoor control PCB • Anomalous outdoor control PCB commuication
Replacement of
PCB
126
Outdoor sub PCB • Anomalous outdoor sub PCB commuication
Stays OFF
Keeps
flashing
Keeps
flashing
Fan motor • Defective fan motor
Replacement 128
Outdoor control PCB • Defective outdoor control PCB
Stays OFF
Keeps
flashing
1 time
flash
Power transistor error
(Inverter PCB)
• Inverter and fan motor anomaly
Replacement of
PCB
130
Stays OFF
Keeps
flashing
8 times
flash
Outdoor suction pipe sensor
• Defective suction pipe temperature sensor, broken wire or poor connector
connection
Replacement, repair
of temperature
sensor
131
Outdoor sub PCB • Defective outdoor sub PCB (Defective temperature sensor input circuit)?
Replacement of
PCB
Stays OFF
Keeps
flashing
8 times
flash
High pressure sensor • Defective high pressure sensor
Replacement of
sensor
132
Outdoor control PCB • Defective outdoor control PCB (Defective temperature sensor input circuit)?
Replacement of
PCB
Stays OFF
Keeps
flashing
2 times
flash
Operation status • Shortage in refrigerant quantity Repair
133
Installation status • Service valve closing operation
Service valve
opening check
Stays OFF
Keeps
flashing
2 times
flash
Compressor, outdoor main
PCB
• Anomalous compressor startup Replacement 135
Note (1) * mark in the Description of trouble means that, in ordinary diagnosis, it cannot identify the cause denitely, and, if the trouble is repaired by replacing the
part, it is judged consequently that the replaced part was defective.

Mitsubishi SCM71ZJ-S1 Specifications

General

Brand	Mitsubishi
Model	SCM71ZJ-S1
Category	Air Conditioner
Language	English