Mitsubishi Electric PUMY-P112VKM1, Руководство по обслуживанию

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Check code
Abnormal points and detection methods Causes and check points
<Models equipped with the float switch>
Abnormal if the connector on the drain float switch side CN4F is detected
to be disconnected.
Contact failure of connector CN4F
Defective indoor controller board
●Diagnosis of defectives
Make sure to turn the power OFF before connecting/disconnecting any connectors, or replacing boards
Diagnosis Remedy
5701
Models equipped with the float switch
Contact failure of drain float switch
<Models equipped with the float switch>
Check if it is short-circuited
between pins 3-4 of the
connector (CN4F) on the float
switch side.
Replace the indoor controller board.
No
No
Yes
Yes
Is the check code <5701>
still displayed?
Is it short-circuited?
No abnormality
A connector or wiring contact failure is
suspected.
Replace the connector for float switch.
Disconnect and reconnect the
connector for float switch on
the indoor controller board side,
then turn the power back ON.
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OCH576