Mitsubishi Electric PURY-P200 Service Handbook page 137

Checking code Meaning, detecting method
4250
Load short Shorting at the load
4255
abnormality (compressor) side detected just
(Error details before starting the inverter.
105)
4260
Cooling fan <In the case of 4260>
4265 abnormality When the heat sink temperature
(THHS1)
or longer after the inverter starts.
<In the case of 4265>
When the heat sink temperature
(THHS5)
or longer after the inverter starts.
5101 Air inlet When shorting or open of the
sensor is detected while the
thermo is ON, the restart
prevention mode will be
operated for 3 minutes. If there
5102
Liquid is no recovery after 3 minutes,
pipe the unit will make an error stop.
(If there is a recovery, the unit
will run normally.)
Shorting: detectable at 90˚C or
5103
Gas pipe Open
✻
Sensor error at gas-side
cannot be detected under the
5104
Outdoor
following conditions.
air
· During heating operation
tempera-
· During cooling operation for
ture
3 minutes after the
compressor turns on.
5104 Outdoor
air
tempera-
ture
✻
For the check code on the inverter, refer to
<In the case of 4250>
(1) Shorting of compressor
(2) Output wiring
(3) Power supply
<In the case of 4255>
(1) Shorting of fan motor
(2) Output wiring
(3) Power supply
Same as 4230 error
95˚C for 10 minutes
85˚C for 10 minutes
(1) Thermistor failure
(2) Contact failure of the
(3) Thermistor wire
(4) Thermosensor is not set up
(5) Indoor board failure
higher
: detectable at –40˚C or
lower
(1) The connection of the
–
(2) The outdoor sir processing
"
7. Inverter and compressor
- 134 -
Cause
connector
disconnection or partial
disconnection
or contact failure
(detection circuit)
connector (CN29) is a failure.
unit is out of order.
" "
in the section [4] Troubleshooting of principal parts
Checking method & Countermeasure
Refer to 9.[4].7.(2).[2]
Refer to 9.[4].7.(2).[6]
Same as 4230 error
Themistor resistance check
0˚C : 15kΩ
10˚C : 9.7kΩ
20˚C : 6.4kΩ
30˚C : 4.3kΩ
40˚C : 3.1kΩ
Check the contact of the
connector
If no fault is found, the indoor
board is a failure.
Check the contact of the
connector
Replace the sensor.
"