Mitsubishi Electric PUMY-P36NKMU4 Technical & Service Manual page 104

Check code
7101
(EF)
Abnormal points and detection methods
When the capacity of connected indoor unit is over, check code <7101> is
displayed.
●Diagnosis of defects
Make sure to turn the power OFF before connecting/disconnecting any connectors, or replacing boards.
Check the model selection switch (SW4
on the indoor controller board) of the
connected indoor unit.
Is it set properly?
OCH811A
Capacity code error
Diagnosis
Yes
Causes and checkpoints
The model name of connected indoor unit (model code)
is read as incompatible.
No
The model code of the connected indoor
unit can be displayed by an operation of
SW1 on the outdoor unit.
104
Remedy
Set the switch properly.