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SiUS04-924
Troubleshooting
Service Diagnosis
85
4.12 Input Overcurrent Detection
Remote
Controller
Display
E8
Method of
Malfunction
Detection
An input overcurrent is detected by checking the input current value being detected by CT with the
compressor running.
Malfunction
Decision
Conditions
The following CT input with the compressor running continues for 2.5 seconds.
CT input : Above 20 A
The system will be shut down if the error occurs 16 times.
Clearing condition : Continuous run for about 5 minutes (normal)
Supposed
Causes
Overcurrent due to compressor failure
Overcurrent due to defective power transistor
Overcurrent due to defective inverter main circuit electrolytic capacitor
Overcurrent due to defective outdoor unit PCB
Error detection due to outdoor unit PCB
Overcurrent due to short-circuit
Troubleshooting
Check No.07
Refer to P.109
Check No.08
Refer to P.109
(R9298)
Caution
Be sure to turn off the power switch before connecting or disconnecting
the connector, or parts damage may occur.
*
An input overcurrent may result from wrong internal wiring. If the wires have been disconnected and
reconnected for part replacement, for example, and the system is interrupted by an input over-current,
check the wires again.
NO
YES
YES
NO
Get restarted and measure the
input current.
Check No. 08
Check the discharge pressure.
Check No. 07
Check the installation condition.
Check with the inverter checker (
*
).
Turn off the power and disconnect
the harnesses U, V and W.
Turn off the power, and reconnect
the harnesses. Turn on the power
again and get restarted.
Replace the outdoor unit
PCB.
Correct the power supply or
replace the PM1.
(Replace the outdoor unit
PCB.)
Any LED off?
Input current flowing
above its stop level?
*
Inverter checker
Part No.: 1225477
Summary of Contents for FTXS30HVJU
Page 1: ...SiUS04 924 Applied Models Inverter Pair Heat Pump Inverter Pair Wall Mounted Type H Series ...
Page 8: ...SiUS04 924 List of Functions 1 Part 1 List of Functions 1 List of Functions 2 ...
Page 10: ...SiUS04 924 Specifications 3 Part 2 Specifications 1 Specifications 4 ...
Page 50: ...Control Specification SiUS04 924 Function and Control 43 ...
Page 53: ...Instruction SiUS04 924 46 Operation Manual 2 Instruction 2 1 Remote Controller ...
Page 54: ...SiUS04 924 Instruction Operation Manual 47 operation ...
Page 55: ...Instruction SiUS04 924 48 Operation Manual 2 2 AUTO DRY COOL HEAT FAN Operation ...
Page 56: ...SiUS04 924 Instruction Operation Manual 49 ...
Page 58: ...SiUS04 924 Instruction Operation Manual 51 fins fins fins fins angles Inside ...
Page 60: ...SiUS04 924 Instruction Operation Manual 53 2 5 INTELLIGENT EYE Operation fins above ...
Page 61: ...Instruction SiUS04 924 54 Operation Manual ...
Page 62: ...SiUS04 924 Instruction Operation Manual 55 2 6 POWERFUL Operation ...
Page 63: ...Instruction SiUS04 924 56 Operation Manual 2 7 OUTDOOR UNIT QUIET Operation ...
Page 64: ...SiUS04 924 Instruction Operation Manual 57 2 8 ECONO Operation ...
Page 65: ...Instruction SiUS04 924 58 Operation Manual 2 9 TIMER Operation ...
Page 66: ...SiUS04 924 Instruction Operation Manual 59 ...
Page 69: ...Instruction SiUS04 924 62 Operation Manual ...
Page 70: ...SiUS04 924 Instruction Operation Manual 63 ...
Page 71: ...Instruction SiUS04 924 64 Operation Manual ...
Page 72: ...SiUS04 924 Instruction Operation Manual 65 3P228444 2B ...
Page 193: ...SiUS04 924 187 Appendix Part 9 Appendix 1 Piping Diagrams 188 2 Wiring Diagrams 189 ...