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Check
SiUS04-702
170
Service Diagnosis
5. Check
5.1
How to Check
5.1.1
Fan Motor Connector Output Check
Check No.01
1. Check connector connection.
2. Check motor power supply voltage output (pins 4-7).
3. Check motor control voltage (pins 4-3).
4. Check rotation command voltage output (pins 4-2).
5. Check rotation pulse input (pins 4-1).
5.1.2
Electronic Expansion Valve Check
Check No.04
Conduct the followings to check the electronic expansion valve (EV).
1. Check to see if the EV connector is correctly inserted in the PCB. Compare the EV unit and the
connector number.
2. Turn the power off and back on again, and check to see if all the EVs generate latching sound.
3. If any of the EVs does not generate latching noise in the above step 2, disconnect that
connector and check the conductivity using a tester.
Check the conductivity between pins 1, 3 and 6, and between pins 2, 4 and 5. If there is no
conductivity between the pins, the EV coil is faulty.
4. If no EV generates latching sound in the above step 2, the outdoor unit PCB is faulty.
5. If the conductivity is confirmed in the above step 2, mount a good coil (which generated latching
sound) in the EV unit that did not generate latching sound, and check to see if that EV
generates latching sound.
∗
If latching sound is generated, the outdoor unit PCB is faulty.
∗
If latching sound is not generated, the EV unit is faulty.
Note:
Please note that the latching sound varies depending on the valve type.
7
6
5
4
3
2
1
Motor power supply voltage
Unused
Unused
P.0V (reference potential)
Motor control voltage (15 VDC)
Rotation command voltage (1~ 6 VDC)
Rotation pulse input
S1
(R3199)
Harness 6P
6P Connector
Check
5-2
5-4
6-1
6-3
1 2 3 4 5 6
(R1082)
Summary of Contents for FTXS09DVJU
Page 1: ...SiUS04 702 Applied Models z Inverter Pair Heat Pump Inverter Pair Wall Mounted Type D Series...
Page 12: ...SiUS04 702 List of Functions 1 Part 1 List of Functions 1 List of Functions 2...
Page 14: ...SiUS04 702 Specifications 3 Part 2 Specifications 1 Specifications 4...
Page 76: ...SiUS04 702 Instruction Operation Manual 65 2 2 FTXS09 12DVJU 2 2 1 Names of Parts...
Page 77: ...Instruction SiUS04 702 66 Operation Manual...
Page 78: ...SiUS04 702 Instruction Operation Manual 67...
Page 79: ...Instruction SiUS04 702 68 Operation Manual 2 2 2 Preparation before Operation...
Page 80: ...SiUS04 702 Instruction Operation Manual 69...
Page 81: ...Instruction SiUS04 702 70 Operation Manual...
Page 82: ...SiUS04 702 Instruction Operation Manual 71 2 2 3 AUTO DRY COOL HEAT FAN Operation...
Page 83: ...Instruction SiUS04 702 72 Operation Manual...
Page 84: ...SiUS04 702 Instruction Operation Manual 73 2 2 4 Adjusting the Airflow Direction...
Page 85: ...Instruction SiUS04 702 74 Operation Manual...
Page 86: ...SiUS04 702 Instruction Operation Manual 75 2 2 5 POWERFUL Operation...
Page 87: ...Instruction SiUS04 702 76 Operation Manual 2 2 6 OUTDOOR UNIT QUIET Operation...
Page 88: ...SiUS04 702 Instruction Operation Manual 77 2 2 7 HOME LEAVE Operation...
Page 89: ...Instruction SiUS04 702 78 Operation Manual...
Page 90: ...SiUS04 702 Instruction Operation Manual 79 2 2 8 INTELLIGENT EYE Operation...
Page 91: ...Instruction SiUS04 702 80 Operation Manual...
Page 92: ...SiUS04 702 Instruction Operation Manual 81 2 2 9 TIMER Operation...
Page 93: ...Instruction SiUS04 702 82 Operation Manual...
Page 94: ...SiUS04 702 Instruction Operation Manual 83 2 2 10 Care and Cleaning...
Page 95: ...Instruction SiUS04 702 84 Operation Manual...
Page 96: ...SiUS04 702 Instruction Operation Manual 85...
Page 97: ...Instruction SiUS04 702 86 Operation Manual...
Page 98: ...SiUS04 702 Instruction Operation Manual 87...
Page 99: ...Instruction SiUS04 702 88 Operation Manual...
Page 100: ...SiUS04 702 Instruction Operation Manual 89 3P141693 1K...
Page 101: ...Instruction SiUS04 702 90 Operation Manual 2 3 FTXS15 18 24DVJU 2 3 1 Names of Parts...
Page 102: ...SiUS04 702 Instruction Operation Manual 91...
Page 103: ...Instruction SiUS04 702 92 Operation Manual...
Page 104: ...SiUS04 702 Instruction Operation Manual 93 2 3 2 Preparation before Operation...
Page 105: ...Instruction SiUS04 702 94 Operation Manual...
Page 106: ...SiUS04 702 Instruction Operation Manual 95...
Page 107: ...Instruction SiUS04 702 96 Operation Manual 2 3 3 AUTO DRY COOL HEAT FAN Operation...
Page 108: ...SiUS04 702 Instruction Operation Manual 97...
Page 109: ...Instruction SiUS04 702 98 Operation Manual 2 3 4 Adjusting the Airflow Direction...
Page 110: ...SiUS04 702 Instruction Operation Manual 99...
Page 111: ...Instruction SiUS04 702 100 Operation Manual 2 3 5 POWERFUL Operation...
Page 112: ...SiUS04 702 Instruction Operation Manual 101 2 3 6 OUTDOOR UNIT QUIET Operation...
Page 113: ...Instruction SiUS04 702 102 Operation Manual 2 3 7 HOME LEAVE Operation...
Page 114: ...SiUS04 702 Instruction Operation Manual 103...
Page 115: ...Instruction SiUS04 702 104 Operation Manual 2 3 8 INTELLIGENT EYE Operation...
Page 116: ...SiUS04 702 Instruction Operation Manual 105...
Page 117: ...Instruction SiUS04 702 106 Operation Manual 2 3 9 TIMER Operation...
Page 118: ...SiUS04 702 Instruction Operation Manual 107...
Page 119: ...Instruction SiUS04 702 108 Operation Manual 2 3 10 Care and Cleaning...
Page 120: ...SiUS04 702 Instruction Operation Manual 109...
Page 121: ...Instruction SiUS04 702 110 Operation Manual...
Page 122: ...SiUS04 702 Instruction Operation Manual 111 2 3 11 Troubleshooting...
Page 123: ...Instruction SiUS04 702 112 Operation Manual...
Page 124: ...SiUS04 702 Instruction Operation Manual 113...
Page 125: ...Instruction SiUS04 702 114 Operation Manual 3P141693 2K...
Page 191: ...Check SiUS04 702 180 Service Diagnosis...
Page 293: ...Others SiUS04 702 282 Others...
Page 305: ...SiUS04 702 vi Index...