Mitsubishi Electric PURY-P200 Service Handbook page 135

Checking code Meaning, detecting method
4220 Bus voltage If Vdc
4225 drop operation. (Software detection)
abnormality
(Error details
No.108)
Bus voltage If Vdc
rise inverter operation.
abnormality
(Error details
No.109)
Bus Voltage Bus voltage abnormality
abnormality If Vdc
(Error details detected. (H/W detection)
No.110)
Logic error If only the H/W error logic circuit
(Error details operates, and no identifiable
No.111) error is detected.
4230 Heat sink <In the case of 4230>
4235 overheat When the heat sink temperature
protection (THHS1)
<In the case of 4235>
When the heat sink temperature
(THHS5)
✻
For the check code on the inverter, refer to
289V is detected during (2) Voltage drop detected.
(3) Main board failure.
(4) 52C1 failure.
(5) Diode stack failure.
817V is detected during (1) Different voltage connection.
(2) INV board failure.
(1) Same as detail code No.108
772V or Vdc 308V is
<In the case of 4220>
(1) External noise.
(2) INV board failure.
(3) G/A board failure.
(4) IPM failure.
(5) DCC failure.
<In the case of 4225>
(1) External noise.
(2) FAN board failure.
(1) Power supply environment.
95˚C is detected.
(2) Air passage blockage.
85˚C is detected.
(3) Wiring defect.
(4) THHS failure.
(5) INV board fan output failure.
(6) Cooling fan failure.
(7) IPM failure.
"
7. Inverter and compressor
- 132 -
Cause
and 109 of 4220 error.
" "
in the section [4] Troubleshooting of principal parts
Checking method & Countermeasure
<In the case of 4225>
Check the followings
1Check the voltage of CN52C
on the main board
→ Refer to (3).
2Check whether 52C1 works
normally → Refer to (4)
Or check 52C1-connecting piping.
3Check for the diode stack
→ Refer to (5)
4Check for the wiring and the
connectors of the CNVDC on
the FAN board.
Replace FAN board when no
fault is found for the above 1~4.
Check whether AC220~240V is
applied to the connector (CN52C)
during inverter operation.
→ If not applied, check the main
board and the fuse (F01 and
F02). Replace the main board
when no fault is found.
Refer to 9.[4].7.(2)
Check the coil resistance check.
Refer to 9.[4].7.(2)
Check the diode stack resistance.
Check the voltage of the power-
supply terminal block (TB1).
Replace INV board if no fault is found.
In the case of 4220: INV board
In the case of 4225: FAN board
Same as detail code No.108
and 109 of 4220 error.
Refer to 9.[4].7.(2).[5]
Replace G/A board.
Refer to 9.[4].7.(2).[1]
Replace DCCT.
Refer to 9.[4].7.(2).[7]
Check the power supply voltage.
Ensure that the power supply voltage
342V across all phases.
Check to make sure the air passage
of the heat sink cooling is not blocked.
Check the cooling fan wiring.
Check the THHS sensor resistance.
Ensure that the heat sink temperature
is 55˚C or more and that 220~240V is
applied to the inverter PCB connector
CNFAN when the inverter is on.
Check the cooling fan operation
under the above operating conditions.
Refer to 9.[4].7.(2) "Check for
compressor ground fault or coil error"
[5] "Check the inverter circuit trouble"
"