Mitsubishi Heavy Industries FDT200VSAWPVH Service Manual page 44

(ii) Outdoor unit
FDC200, 250, 280VSA-W
Remote control 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
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) * m ark 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 control PCB inventer
PCB
Location of trouble
Green
Yellow
Red LED
LED (1) LED
Installation or operating
condition
1-time Keeps
Outdoor heat exchanger
flash flashing
temperature sensor
Outdoor control PCB
Installation or operating
condition
1-time Keeps
Discharge pipe
flash flashing
temperature sensor
Outdoor control PCB
Outdoor heat exchanger
Keeps
1-time Keeps
temperature sensor
flashing
flash flashing
Outdoor control PCB
Outdoor air temperature
1-time Keeps
sensor
flash flashing
Outdoor control PCB
Discharge pipe
1-time Keeps
temperature sensor
flash flashing
Outdoor control PCB
Installation or operating
1-time Keeps
condition
flash flashing
Outdoor control PCB
1-time Keeps Inverter PCB or radiator
8-time flash
flash flashing fin
Outdoor control PCB
compressor
1-time Keeps
9-time flash
flash flashing
Installation or operating
condition
1-time Keeps
Outdoor control PCB
flash flashing
Outdoor control PCB
1-time Keeps
flash flashing
Inverter PCB
Outdoor fan motor
1-time Keeps
Keeps
flash flashing
flashing
Outdoor control PCB
Installation or operating
condition
1-time Keeps
Low pressure sensor
flash flashing
Outdoor control PCB
1-time Keeps
8-time flash Inverter PCB
flash flashing
Suction pipe
temperature sensor
1-time Keeps
flash flashing
Outdoor control PCB
Low pressure sensor
1-time Keeps
flash flashing
Outdoor control PCB
Keeps
flashing
Compressor under dome
temperature sensor
1-time Keeps
flash flashing
Outdoor 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. Replacement
-
Description of trouble
• Higher outdoor heat exchanger temperature
• Defective outdoor heat exchanger temperature sensor
*• Defective outdoor control PCB (Defective temperature sensor input circuit)? Replacement of PCB
• Higher discharge temperature
• Defective discharge pipe temperature sensor
*• Defective outdoor control PCB (Defective temperature sensor input circuit)? Replacement of PCB
• Defective outdoor heat exchanger temperature sensor, broken wire or poor
connector connection
*• Defective outdoor control PCB (Defective temperature sensor input circuit)? Replacement of PCB
• Defective outdoor air temperature sensor, broken wire or poor connector
connection
*• Defective outdoor control PCB (Defective temperature sensor input circuit)? Replacement of PCB
• Defective discharge pipe temperature sensor, broken wire or poor connector
connection
*• Defective outdoor control PCB (Defective temperature sensor input circuit)? Replacement of PCB
• Rising high pressure (Operation of 63H1) • Service valve closing operation
*• Defective outdoor control PCB (Defective 63H input circuit)?
• Power transistor overheat
• Current cut (Anomalous compressor over-current)
• Service valve closing operation
• Liquid flooding error
• Anomalous outdoor control PCB communication
• Anomalous inverter PCB communication
• Anomalous outdoor fan motor
*• Defective outdoor control PCB (Defective motor input circuit)?
• Low pressure error • Service valve closing operation
• Anomalous low pressure, broken wire of low pressure sensor or poor
connector connection
*• Defective outdoor control PCB (Defective sensor input circuit)?
• Anomalous inverter PCB
• Defective suction pipe temperature sensor, broken wire or poor connector
connection
*• Defective outdoor PCB (Defective sensor input circuit)?
• Defective low pressure sensor
• Defective outdoor control PCB (Defective sensor input circuit)?
• Defective compressor under dome temperature sensor (Model FDC250 only)
• Defective outdoor control PCB (Defective sensor input circuit)? (Model
FDC250 only)
• Shortage in refrigerant quantity
• Service valve closing operation
• Anomalous compressor startup
Description of trouble
43
-
'21 • PAC-SM-383
Reference
Repair method
page
Repair
Replacement of
98
temperature sensor
Repair
Replacement, repair of
99
temperature sensor
Replacement, repair of
temperature sensor
100
Replacement, repair of
temperature sensor
101
Replacement, repair of
temperature sensor
102
Repair
103
Replacement of PCB
Replacement of PCB
104
or Repair
Replacement of PCB
105 ・ 106
Repair
Replacement of PCB 107 ・ 108
Service valve opening
check
109
Replacement of PCB
Replacement, repair
110
Replacement of PCB
Repair
Replacement, repair of
111 ・ 112
sensor
Replacement of control
PCB
Replacement of PCB 113
Replacement, repair of
temperature sensor
114
Replacement of control
PCB
Replacement of sensor
115
Replacement of control
PCB
Replacement of
temperature sensor
116
Replacement of control
PCB
Repair
117
Service valve opening
check
118 ・ 119
Replacement
Repair method