Mitsubishi Electric PUMY-P112VKM1, Руководство по обслуживанию

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Check code
●Diagnosis of defectives
Make sure to turn the power OFF before connecting/disconnecting any connectors, or replacing boards.
Diagnosis Remedy
Chart 2 of 3
No
No
Is the resistance of drain
sensor normal?
Replace the drain sensor.
Continue to the next page
<How to check the resistance>
Disconnect the connector for drain sensor from the indoor controller board to check the
resistance using a tester.
Temperature Resistance
0
6.0 kΩ
10
3.9 kΩ
20
2.6 kΩ
25
2.2 kΩ
30
1.8 kΩ
40
1.3 kΩ
60
0.6 kΩ
Temperature(°C)
Resistance(k )
0 20 -20 40 60 80
0
2
1
3
4
5
6
7
8
9
10
<Drain Sensor>
<Drain sensor models>
Drain overflow protection
2502
Continued from the previous page
No
Is the check code
<2502> still displayed?
No abnormality
The cause might be that the drain level
was unusually high.
Restore the drain sensor, and operate the
unit.
Disconnect the connector for
drain sensor (CN31) and short-
circuit between pins 1-2 on the
indoor controller board, then start
cooling operation.
Yes
No
Yes
Yes
No
Is the connector CNP
connected properly?
Is 200 V AC output on
the connector CNP?
Connect the connector (CN4) properly.
Replace the indoor controller board.
Turn ON the emergency
operation switch (SWE).
Yes
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