Troubleshooting by Indication on the Remote Controller
Troubleshooting
169
3.22
“
E7
”
Malfunction of Outdoor Unit Fan Motor
Remote
Controller
Display
E7
Applicable
Models
U-4..6ML5DPQ, U-4..6ML5XPQ
Method of
Malfunction
Detection
Malfunction of fan motor system is detected according to the fan speed detected by hall IC
when the fan motor runs.
Malfunction
Decision
Conditions
When the fan runs with speed less than a specified one for 6 seconds or more when the fan
motor running conditions are met
When malfunction is generated 4 times, the system shuts down.
Supposed
Causes
Malfunction of fan motor
The harness connector between fan motor and PC board is left in disconnected, or faulty
connector
Fan does not run due to foreign matters tangled
Clearing condition: Operate for 5 minutes (normal)
Open phase L1 or open phase N.
Troubleshooting
Connector
of fan motor is
disconnected.
YES
NO
NO
YES
Has the
voltage between L1
and N on the power supply terminal
board X1M fallen within the range of
220 to 240V±10%
(50 Hz)?
NO
YES
Can the fan
be turned smoothly
with hand after disconnect
the connector of
fan motor?
Is there any
obstacle around
the fan?
YES
YES
NO
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
Has either the fuse
F4U on the control PC board
(A1P) or the fuse F1U on the
inverter PC board (A2P)
blown out?
NO
NO
Connect the connector.
Remove the obstacle.
Correct the power supply
voltage.
If L1 and N phases are
open, replace the switch
box.
YES
NO
Replace outdoor unit PC
board.
If the F4U has blown out,
replace the fuse.
If the F1U has blown out,
replace the inverter PC
board assy.
Replace the fan motor.
Are the
resistances between pins
above judgment?
Check No. 3
Check on connector of fan
motor (Refer to information
on P.220)
If the F4U has blown out,
replace the fuse.
If the F1U has blown out,
replace the inverter PC
board assy.
Replace the fan motor.
YES
Has either the fuse
F4U on the control PC board
(A1P) or the fuse F1U on the
inverter PC board (A2P)
blown out?
Panasonic
Summary of Contents for U-4..6ML5XPQ
Page 1: ...Service Manual U 4 6ML5XPQ DPQ Urban Multi Mini UM Heat Pump ...
Page 2: ......
Page 12: ...Introduction x Urban Multi ML5 Mini UM Heat Pump ...
Page 37: ...Specifications Specifications 25 Panasonic ...
Page 38: ...Specifications 26 Specifications Urban Multi ML5 Mini UM Heat Pump ...
Page 39: ...Specifications Specifications 27 Panasonic ...
Page 40: ...Specifications 28 Specifications Urban Multi ML5 Mini UM Heat Pump ...
Page 134: ...Field Setting 122 Test Operation Urban Multi ML5 Mini UM Heat Pump ...
Page 235: ...Piping Diagrams Appendix 223 U 4 5 6ML5DPQ 3D052712 Panasonic ...
Page 238: ...Piping Diagrams 226 Appendix Urban Multi ML5 Mini UM Heat Pump ...
Page 240: ...Wiring Diagrams 228 Appendix U 4 5 6ML5DPQ 3D05811B Urban Multi ML5 Mini UM Heat Pump ...
Page 241: ...Wiring Diagrams Appendix 229 2 2 Field Wiring U 4 5 6ML5XPQ 3D057919 Panasonic ...
Page 242: ...Wiring Diagrams 230 Appendix U 4 5 6ML5DPQ 3D052597 Urban Multi ML5 Mini UM Heat Pump ...
Page 243: ...Wiring Diagrams Appendix 231 2 3 Indoor Unit S 20 25 32 63LM3HPQ Panasonic ...
Page 244: ...Wiring Diagrams 232 Appendix S 40 50 80 125LM3HPQ Urban Multi ML5 Mini UM Heat Pump ...
Page 245: ...Wiring Diagrams Appendix 233 S 20 25 32 40 50 63 80 100 125UM4JPQ Panasonic ...
Page 246: ...Wiring Diagrams 234 Appendix S 20 25 32 40 50YM3HPQ Urban Multi ML5 Mini UM Heat Pump ...
Page 247: ...Wiring Diagrams Appendix 235 S 25 32 40 63DM3HPS 3D039564C Panasonic ...
Page 248: ...Wiring Diagrams 236 Appendix S 20 25NM3HPQ Urban Multi ML5 Mini UM Heat Pump ...
Page 249: ...Wiring Diagrams Appendix 237 S 20 25 32 40 50 63FM3HPQ Panasonic ...
Page 250: ...Wiring Diagrams 238 Appendix S80 100 125FM3HPQ Urban Multi ML5 Mini UM Heat Pump ...
Page 252: ...Wiring Diagrams 240 Appendix S 32 63 100TM3JPR 3D039801D Urban Multi ML5 Mini UM Heat Pump ...
Page 255: ...Wiring Diagrams Appendix 243 Panasonic ...
Page 256: ...Wiring Diagrams 244 Appendix Urban Multi ML5 Mini UM Heat Pump ...
Page 257: ...Wiring Diagrams Appendix 245 Panasonic ...
Page 259: ...Option List Appendix 247 Panasonic ...
Page 262: ...Example of Connection 250 Appendix Urban Multi ML5 Mini UM Heat Pump ...
Page 283: ......