Mitsubishi Heavy Industries FDUA160AVSAVH Service Manual page 41

(ii) Outdoor unit
FDCA160, 200VSA
Indoor unit control
Remote 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
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.
(iii) Option control in-use
Indoor unit control PCB
Error code Red LED Red LED Green LED
Keeps flashing Stays OFF Keeps flashing
Outdoor
Outdoor unit control
inventer
PCB
PCB
Location of trouble
Green
Yellow
Red LED
LED
LED (1)
Installation or operating
condition
1-time Keeps
Outdoor heat exchanger
flash flashing
temperature sensor
Outdoor unit control PCB *• Defective outdoor unit control PCB (Defective temperature sensor input circuit)? Replacement of PCB
Installation or operating
condition
1-time Keeps
Discharge pipe
flash flashing
temperature sensor
Outdoor unit control PCB *• Defective outdoor unit control PCB (Defective temperature sensor input circuit)? Replacement of PCB
Outdoor heat exchanger
Keeps
1-time Keeps
temperature sensor
flashing
flash flashing
Outdoor unit control PCB *• Defective outdoor unit control PCB (Defective temperature sensor input circuit)? Replacement of PCB
Outdoor air temperature
1-time Keeps
sensor
flash flashing
Outdoor unit control PCB *• Defective outdoor unit control PCB (Defective temperature sensor input circuit)? Replacement of PCB
Discharge pipe
1-time Keeps
temperature sensor
flash flashing
Outdoor unit control PCB *• Defective outdoor unit control PCB (Defective temperature sensor input circuit)? Replacement of PCB
Installation or operating
1-time Keeps
condition
flash flashing
Outdoor unit control PCB *• Defective outdoor unit control PCB (Defective 63H input circuit)?
1-time Keeps Inverter PCB or radiator
8-time flash
flash flashing fin
Outdoor unit control
PCB compressor
1-time Keeps
9-time flash
flash flashing
Installation or operating
condition
Outdoor unit control
1-time Keeps
PCB
flash flashing
Inverter PCB
Outdoor fan motor
1-time Keeps
flash flashing
Keeps Outdoor unit control PCB *• Defective outdoor unit control PCB (Defective motor input circuit)?
flashing
Installation or operating
condition
1-time Keeps
Low pressure sensor
flash flashing
Outdoor unit control
PCB
1-time Keeps
8-time flash Inverter PCB
flash flashing
Suction pipe
temperature sensor
1-time Keeps
flash flashing
Outdoor unit control
PCB
Low pressure sensor
1-time Keeps
flash flashing
Outdoor unit control PCB • Defective outdoor unit control PCB (Defective sensor input circuit)?
Keeps
flashing
Compressor under dome
temperature sensor
1-time Keeps
flash flashing
Outdoor unit control
PCB
Operation status
1-time Keeps
flash flashing
Installation status
5-time Keeps Compressor inverter
4-time flash
flash flashing PCB
Outdoor unit control PCB
Red LED Green LED
Stays OFF Keeps flashing • Communication error (Defective communication circuit on the main unit of SC-SL2NA-E or SC-SL4-AE/BE) ete.
-
Description of trouble
• Higher outdoor heat exchanger temperature
• Defective outdoor heat exchanger temperature sensor
• Higher discharge temperature
• Defective discharge pipe temperature sensor
• Defective outdoor heat exchanger temperature sensor, broken wire or poor
connector connection
• Defective outdoor air temperature thermistor, broken wire or poor connector
connection
• Defective discharge pipe temperature sensor, broken wire or poor connector
connection
• Rising high pressure (Operation of 63H1) • Service valve closing operation
• Power transistor overheat
• Current cut (Anomalous compressor over-current)
• Service valve closing operation
• Anomalous outdoor unit control PCB communication
• Anomalous inverter PCB communication
• Anomalous outdoor fan motor
• Low pressure error • Service valve closing operation
• Anomalous low pressure, broken wire of low pressure sensor or poor
connector connection
*• Defective outdoor unit control PCB (Defective sensor input circuit)?
• Anomalous inverter PCB
• Defective suction pipe temperature sensor, broken wire or poor connector
connection
*• Defective outdoor unit PCB (Defective sensor input circuit)?
• Defective low pressure sensor
• Defective compressor under dome temperature sensor
• Defective outdoor unit control PCB (Defective sensor input circuit)?
• Shortage in refrigerant quantity
• Service valve closing operation
• Anomalous compressor startup
Description of trouble
40
-
'21 • PAC-SM-398
Reference
Repair method
page
Repair
Replacement of
89
temperature sensor
Repair
Replacement, repair of
90
temperature sensor
Replacement, repair of
temperature sensor
91
Replacement, repair of
temperature sensor
92
Replacement, repair of
temperature sensor
93
Repair
94
Replacement of PCB
Replacement of PCB
95
or Repair
Replacement of PCB
96 ・ 97
Repair
Service valve opening
check
98
Replacement of PCB
Replacement, repair
99
Replacement of PCB
Repair
Replacement, repair of
100 ・ 101
sensor
Replacement of control
PCB
Replacement of PCB 102
Replacement, repair of
temperature sensor
103
Replacement of control
PCB
Replacement of sensor
104
Replacement of control
PCB
Replacement of
temperature sensor
105
Replacement of control
PCB
Repair
106
Service valve opening
check
107 ・ 108
Replacement
Repair method
Replacement