Troubleshooting
MLCAC-UTSM-2010-10
84 Outdoor Units
3. E3 malfunction (For 18K & 24K & 30K)
Check whether the indicator lights LED1 on the main board is flashing
Check whether the connecting wiring between the IPM module and the CN4
on the main board is broken off
Check whether the connecting wiring between the IPM module positive
pole and the CN12 on the power board is broken off
Use the multimeter to measure whether the voltage between the CN12 and
the CN13 on the power board is b
(
277V~345
)
V
Check whether the connecting wiring between the IPM module negative
pole and the CN13 on the power board is broken off
E3 display
Communication malfunction in outdoor IC and DSP
Replace the outdoor main board
Yes
Insert the connecting wiring well over
again
Yes
No
No
Replace outdoor
main board
Yes
No
Insert the connecting wiring well over again
Yes
No
No
Replace the IPM module
Yes
Replace the power board
No
Insert the connecting wiring well over again
Yes
Disconnect the connecting wiring between the IPM module and the CN4 on the
main board, use the multimeter to measure the voltage between the IPM module
CN1 port’s 3 and 4 pillar, check whether it is 5V, (the third pillar on the main board
5V)
Содержание MLCAC-UTSM-2010-10
Страница 1: ...MIDEA LCAC 50Hz R410A DC Inverter Service Manual 2011 ...
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Страница 16: ...Service Space MLCAC UTSM 2010 10 12 Four way Cassette Type 3 Service Space ...
Страница 17: ...MLCAC UTSM 2010 10 Wiring Diagrams Four way Cassette Type 13 4 Wiring Diagrams MCC 36HRDN1 MCC 48HRDN1 ...
Страница 21: ...MLCAC UTSM 2010 10 The Specification of Power Four way Cassette Type 17 9 The Specification of Power ...
Страница 22: ...Field Wiring MLCAC UTSM 2010 10 18 Four way Cassette Type 10 Field Wiring Wiring chart ...
Страница 23: ...MLCAC UTSM 2010 10 Field Wiring Four way Cassette Type 19 ...
Страница 32: ...The Specification of Power MLCAC UTSM 2010 10 28 Duct Type 9 The Specification of Power ...
Страница 33: ...MLCAC UTSM 2010 10 Field Wiring Duct Type 29 10 Field Wiring ...
Страница 34: ...Field Wiring MLCAC UTSM 2010 10 30 Duct Type Air conditioner link circuit ...
Страница 37: ......
Страница 40: ...Service Space MLCAC UTSM 2010 10 58 Ceiling Floor Type 3 Service Space ...
Страница 41: ...MLCAC UTSM 2010 10 Wiring Diagrams Ceiling Floor Type 59 4 Wiring Diagrams MUB 36HRDN1 MUB 48HRDN1 ...
Страница 46: ...The Specification of Power MLCAC UTSM 2010 10 64 Ceiling Floor Type 9 The Specification of Power ...
Страница 47: ...MLCAC UTSM 2010 10 Field Wiring Ceiling Floor Type 65 10 Field Wiring ...
Страница 48: ...Field Wiring MLCAC UTSM 2010 10 66 Ceiling Floor Type ...
Страница 51: ...MLCAC UTSM 2010 10 Service Space Outdoor Units 69 2 Service Space ...
Страница 53: ...MLCAC UTSM 2010 10 Wiring Diagrams Outdoor Units 71 4 Wiring Diagrams MOUB 36HDN1 Q MOU 48HDN1 MOUB 36HDN1 R ...
Страница 54: ...Wiring Diagrams MLCAC UTSM 2010 10 72 Outdoor Units MOUB 48HDN1 R ...
Страница 60: ...Troubleshooting MLCAC UTSM 2010 10 78 Outdoor Units For Duct type ...
Страница 89: ...MLCAC UTSM 2010 10 Control Control 107 Part 5 Control 1 Controller 108 ...