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Troubleshooting
SiBE12-519
164
Service Diagnosis
Troubleshooting
Check No.07
Refer to P.174
Check No.08
Refer to P.175
Check No.13
Refer to P.177
Note:
If the model doesn't have SPM, replace the outdoor unit PCB.
Fully open the stop valve.
Keep on using as it is
(monitor).
Check the electricals'
connectors and other
fittings.
∗
Inverter checker
Part No.: 1225477
Correct the power supply or
replace the SPM.
(Replace the outdoor unit
PCB.)
Replace the SPM.
(Replace the outdoor unit
PCB.)
Correct the power supply.
Replace the compressor.
(R4705)
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
Stop valve fully open?
NO
YES
∗
An output 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 output over-current,
take the following procedure.
Error again?
NO
YES
NO
YES
Voltage as rated?
YES
NO
Short-circuit
or breakage between
compressor's coil
phases?
NO
YES
Normal?
YES
NO
Any LED off?
Turn off the power and turn it on
again to get the system started.
See if the same error occurs.
Turn off the power and disconnect
the harnesses U, V and W.
Monitor the supply voltage,
discharge and suction pressures,
and other factors for a long term.
Possible causes
z
Instantaneous supply voltage
drop
z
Compressor motor overloaded
z
Contact-induced electrical short-
circuit
Check with the inverter checker (
∗
).
Turn off the power, and reconnect
the harnesses. Turn on the power
again and get restarted.
Check the supply voltage.
C
heck No.
13
Check the power transistor.
C
heck No.
08
Check the discharge pressure.
C
heck No.
07
Check the installation condition.
Summary of Contents for 2MKS40DVMB
Page 10: ...SiBE12 519 List of Functions 1 Part 1 List of Functions 1 Cooling Only 2 2 Heat Pump 4 ...
Page 15: ...Heat Pump SiBE12 519 6 List of Functions ...
Page 29: ...Heat Pump SiBE12 519 20 Specifications ...
Page 135: ...Instruction SiBE12 519 126 System Configuration ...
Page 211: ...Outdoor Unit SiBE12 519 202 Removal Procedure ...