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SiUS04-924
Troubleshooting
Service Diagnosis
101
Troubleshooting
Check No.07
Refer to P.109
Check No.08
Refer to P.109
Check No.13
Refer to P.111
(R8071)
Caution
Be sure to turn off the power switch before connecting or disconnecting
the connector, or parts damage may occur.
NO
YES
NO
YES
NO
YES
YES
NO
NO
YES
YES
NO
Monitor the supply voltage,
discharge and suction pressures,
and other factors long term.
Possible causes
Instantaneous supply voltage
drop
Compressor motor overloaded
Contact-induced electrical
short-circuit
*
An output overcurrent may result from wrong internal wiring. If the wires have been disconnected and
reconnected for parts replacements, for example, and the system is interrupted by an output overcurrent,
take the following procedure:
Check No. 08
Check the discharge pressure.
Check No. 13
Check the power transistor.
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
Turn off the power and turn it on
again to get the system started.
Check the supply voltage.
Keep on using as is
(monitor).
Check the electricals'
connectors and other
fittings.
Fully open the stop valve.
Correct the power supply.
Replace the compressor.
Correct the power supply or
replace the PM1.
(Replace the outdoor unit
PCB.)
Replace the PM1.
(Replace the outdoor unit
PCB.)
Normal?
Error again?
Stop valve fully open?
Voltage as rated?
Any LED off?
*
Inverter checker
Part No.: 1225477
Short-circuit
or breakage between
compressor's coil phases?
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 ...