Troubleshooting
SiEN12-710A
138
Service Diagnosis
Troubleshooting
Check No.07
Refer to P.150
Check No.08
Refer to P.151
Check No.13
Refer to P.153
Note:
If the model does not have SPM, replace the outdoor unit PCB.
(R7148)
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
NO
YES
NO
YES
NO
YES
YES
NO
NO
YES
YES
NO
Monitor the supply voltage,
discharge and suction pressures,
and other factors for a long term.
Possible causes
Instantaneous supply voltage
drop
Compressor motor overloaded
Contact-induced electrical
short-circuit
∗
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,
check the wires again.
Normal?
Error again?
Stop valve fully open?
Voltage as rated?
Any LED off?
Short-
circuit or breakage
between compressor's coil
phases?
Check No. 08
Check the discharge pressure.
Check No. 13
Check the power transistor.
Turn off the power, and reconnect
the harnesses. Turn on the power
again and get restarted.
Turn off the power and turn it on
again to get the system started.
See if the same error occurs.
Check the supply voltage.
Turn off the power and disconnect
the harnesses U, V and W.
Check No. 07
Check the installation condition.
Check with the inverter checker (
∗
).
Keep on using as it 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 SPM.
(Replace the outdoor unit
PCB.)
Replace the SPM.
(Replace the outdoor unit
PCB.)
∗
Inverter checker
Part No.: 1225477
Содержание 2MKS40FV1B
Страница 11: ...Introduction SiEN12 710A x ...
Страница 12: ...SiEN12 710A List of Functions 1 Part 1 List of Functions 1 Cooling Only 2 2 Heat Pump 4 ...
Страница 17: ...Heat Pump SiEN12 710A 6 List of Functions ...
Страница 25: ...Heat Pump SiEN12 710A 14 Specifications ...
Страница 33: ...Printed Circuit Board Connector Wiring Diagram SiEN12 710A 22 Printed Circuit Board Connector Wiring Diagram ...
Страница 75: ...Instruction SiEN12 710A 64 Operation Manual 2 3 Names of Parts FTKS 25 35 D FTXS 25 35 E Indoor unit ...
Страница 111: ...Instruction SiEN12 710A 100 Operation Manual ...
Страница 199: ...Wiring Diagrams SiEN12 710A 188 Appendix ...
Страница 203: ...SiEN12 710A iv Index ...