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Troubleshooting
SiENBE04-507A
124
Service Diagnosis
4.12 Input Over Current Detection
Remote
Controller
Display
E8
Method of
Malfunction
Detection
An input over-current is detected by checking the input current value with the compressor
running.
Malfunction
Decision
Conditions
The following current with the compressor running continues for 2.5 seconds.
Cooling /
Heating: Above 12A
Supposed
Causes
Over-current due to compressor failure
Over-current due to defective power transistor
Over-current due to defective outdoor unit PCB
Error detection due to outdoor unit PCB
Over-current due to short-circuit
Troubleshooting
Check No.7
Refer to P.147
Check No.8
Refer to P.147
Note:
If the model doesn’t have SPM, replace the outdoor unit PCB.
Replace the outdoor unit
PCB.
∗
Inverter checker
Part No.: 1225477
Correct the power supply or
replace the SPM.
(Replace the outdoor unit
PCB.)
(R2952)
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
Input current flowing
above its stop level?
Any LED off?
Check with the inverter checker (
∗
).
Turn off the power and disconnect
the harnesses U, V and W.
Get restarted and measure the
input current.
Check No. 8
Check the discharge pressure.
Check No. 7
Check the installation condition.
Caution
∗
An input over-current 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,
take the following procedure.
YES
NO
YES
NO
Turn off the power, and reconnect
the harnesses. Turn on the power
again and get restarted.
Содержание FTKS20DVMW(L)
Страница 10: ...SiENBE04 507A List of Functions 1 Part 1 List of Functions 1 List of Functions 2...
Страница 16: ...SiENBE04 507A Specifications 7 Part 2 Specifications 1 Specifications 8 1 1 Cooling Only 8 1 2 Heat Pump 21...
Страница 53: ...Printed Circuit Board Connector Wiring Diagram SiENBE04 507A 44 Printed Circuit Board Connector Wiring Diagram...
Страница 85: ...Control Specification SiENBE04 507A 76 Function and Control...
Страница 159: ...Check SiENBE04 507A 150 Service Diagnosis...
Страница 198: ...SiENBE04 507A Outdoor Unit Removal Procedure 189 When reassembling make sure to fit the hook Step Procedure Points Hook...
Страница 212: ...SiENBE04 507A Others 203 Part 8 Others 1 Others 204 1 1 Test Run from the Remote Controller 204 1 2 Jumper Settings 205...
Страница 215: ...Others SiENBE04 507A 206 Others...
Страница 221: ...Wiring Diagrams SiENBE04 507A 212 Appendix...
Страница 225: ...SiENBE04 507A iv Index...