Troubleshooting
Electrical Control System
199
P0 displayed
P0 displayed
IPM module protection
IPM module protection
Yes
Is the power voltage normal?
Is the power voltage normal?
Is the outdoor terminal voltage
normal
?
Is the outdoor terminal voltage
normal
?
Restart the unit when the power supply
returns to normal
Restart the unit when the power supply
returns to normal
No
Yes
No
Reconnect the power
wires
Reconnect the power
wires
Yes
Is the voltage between L and N
normal
?
Is the voltage between L and N
normal
?
Yes
Is the input voltage of bridge
rectifier normal
?
Is the input voltage of bridge
rectifier normal
?
No
No
Are the power wires
connected properly?
Are the power wires
connected properly?
Reconnect L and N
Reconnect L and N
Are L and N wired
correctly?
Are L and N wired
correctly?
Reconnect the bridge
rectifier
Reconnect the bridge
rectifier
Is the bridge rectifier
properly wired?
Is the bridge rectifier
properly wired?
No
No
Yes
Replace the PFC module(If This has not been
done already)
Replace the PFC module(If This has not been
done already)
No
Is the voltage between P and
N properly wired according to
Appendix
3
?
Is the voltage between P and
N properly wired according to
Appendix
3
?
Replace the bridge rectifier
Replace the bridge rectifier
No
Is the bridge rectifier
operating normally?
Is the bridge rectifier
operating normally?
Are the reactor or
Inductance wired properly?
Are the reactor or
Inductance wired properly?
Reconnect the wiring
Reconnect the wiring
No
Are the reactor or
inductance normal?
Are the reactor or
inductance normal?
Yes
Replace reactor or
inductance
Replace reactor or
inductance
No
Is the connecting wire between
the main board and the IPM
board connected tightly?
Is the connecting wire between
the main board and the IPM
board connected tightly?
Reconnect the main board and
IPM board
Reconnect the main board and
IPM board
No
Is the outdoor unit ventilation
in working order?
Is the outdoor unit ventilation
in working order?
Yes
Make sure that the outdoor unit is
ventilating properly
Make sure that the outdoor unit is
ventilating properly
Check whether the refrigerant system is in
working order
Check whether the refrigerant system is in
working order
No
Is the outdoor fan running
properly?
Is the outdoor fan running
properly?
Refer to the solution for themalfunction
of the fan speed being out of control .
Find the cause and resolve the problem
Refer to the solution for themalfunction
of the fan speed being out of control .
Find the cause and resolve the problem
No
Yes
No
Yes
Yes
Is the compress is running
normally?
Is the compress is running
normally?
Yes
Replace the compressor
Replace the compressor
No
Replace IPM Board. Is the problem
resolved?
Replace IPM Board. Is the problem
resolved?
Replace the outdoor main PCB. Is
the problem resolved?
Replace the outdoor main PCB. Is
the problem resolved?
No
Is the connecting wire of the
compressor is connected correctly
or tightly
Is the connecting wire of the
compressor is connected correctly
or tightly
Reconnect he connecting wire
of the compressor
Reconnect he connecting wire
of the compressor
No
Yes
Yes
Summary of Contents for Super DC Series
Page 1: ...Contents i Energy Related Products SUPER DC INVERTER SERIES Service Manual 2017...
Page 14: ...Service Space Indoor Units 12 3 Service Space 1000mm 1000mm 1000mm 1000m m Chart 3...
Page 17: ...Air Velocity Distributions Reference Data Indoor Units 15 30 42K Cooling Heating...
Page 18: ...Air Velocity Distributions Reference Data Indoor Units 16 48 55K Cooling Heating...
Page 23: ...Field Wiring Indoor Units 21 10 Field Wiring...
Page 30: ...Wiring Diagrams Indoor Units 28 4 Wiring Diagrams MTBU 12HWFN1 QRD0W MTB 18HWFN1 QRD0...
Page 32: ...Static Pressure Indoor Units 30 5 Static Pressure MTBU 12HWFN1 QRD0W MTB 18HWFN1 QRD0...
Page 33: ...Static Pressure Indoor Units 31 MTB 24HWFN1 QRD0 MTB 30HWFN1 QRD0...
Page 45: ...Features Indoor Units 43...
Page 53: ...Field Wiring Indoor Units 51 9 Field Wiring...
Page 57: ...Service Space Indoor Units 55 3 Service Space...
Page 67: ...Field Wiring Indoor Units 65 10 Field Wiring...
Page 70: ...Features Indoor Units 68...
Page 72: ...Service Space Indoor Units 70 3 Service Space...
Page 73: ...Wiring Diagrams Indoor Units 71 4 Wiring Diagrams MCA3U 12HRFN1 QRD0W MCA3 18HRFN1 QRD0...
Page 77: ...Field Wiring Indoor Units 75 10 Field Wiring MCA3U 12HRFN1 QRD0W MCA3 18HRFN1 QRD0...
Page 81: ...Features Console Type 79 1 7 Active carbon filter is standard...
Page 83: ...Console Type Console Type 81 3 Service Space...
Page 84: ...Console Type Console Type 82 4 Wiring Diagrams MFAU 12HRFN1 QRC8W MFA 16HRFN1 QRC8W...
Page 89: ...Console Type Console Type 87 10 Field Wiring...
Page 93: ...Service Space M Floor standing Type 91 3 Service Space...
Page 95: ...Wiring Diagrams M Floor standing Type 93 MFM 55ARFN1 RRD0...
Page 101: ...Field Wiring M Floor standing Type 99 MFM 55ARFN1 RRD0...
Page 105: ...Service Space GAFloor standing Type 103 3 Service Space...
Page 106: ...Wiring Diagrams GAFloor standing Type 104 4 Wiring Diagrams MFGA 55ARFN1 RRD0 B...
Page 112: ...Field Wiring GAFloor standing Type 110 10 Field Wiring...
Page 115: ...Dimensions Outdoor Units 113 Model KBtu h Unit mm W D H W1 A B 48 55 952 415 1333 1045 634 404...
Page 117: ...Wiring Diagrams Outdoor Units 115 3 Wiring Diagrams MOB30U 12HFN1 QRD0W MOB30U 16HFN1 QRC8W...
Page 118: ...Wiring Diagrams Outdoor Units 116 MOB30U 18HFN1 QRD0 MOCA30U 24HFN1 QRD0 MOD30U 30HFN1 QRD0...
Page 119: ...Wiring Diagrams Outdoor Units 117 MOD30U 36HFN1 QRD0 MOD30U 42HFN1 QRD0...
Page 120: ...Wiring Diagrams Outdoor Units 118 MOD30U 36HFN1 RRD0 MOD30U 42HFN1 RRD0...
Page 121: ...Wiring Diagrams Outdoor Units 119 MOE30U 48HFN1 QRD0 MOE30U 48HFN1 RRD0 MOE30U 55HFN1 RRD0...
Page 154: ...Refrigerantpipe installation Installation 152...
Page 179: ...Troubleshooting Electrical Control System 177 2 1 8 Display board of GA floor standing...