MXZ-SM48NAMHZ Service Manual

105
OCH789
Check code
Abnormal points and detection methods Causes and checkpoints
When the capacity of connected indoor unit is over, check code <7101> is
displayed.
The model name of connected indoor unit (model code)
is read as incompatible.
●Diagnosis of defects
Make sure to turn the power OFF before connecting/disconnecting any connectors, or replacing boards.
Diagnosis Remedy
7101
(EF)
Capacity code error
Yes
No
Is it set properly? Set the switch properly.
The model code of the connected indoor
unit can be displayed by an operation of
SW1 on the outdoor unit.
Check the model selection switch (SW4
on the indoor controller board) of the
connected indoor unit.