Mitsubishi Electric MXZ-SM36NAM2 Technical & Service Manual page 103

Check code
7100
(EF)
Abnormal points and detection methods
When the total capacity of connected indoor units exceeds the specified
capacity (130% of the outdoor unit capacity), a check code <7100> is
displayed.
●Diagnosis of defects
Make sure to turn the power OFF before connecting/disconnecting any connectors, or replacing boards.
Check the total capacity of connected
indoor units.
Is the total under 130% of outdoor
unit capacity?
Yes
Check the capacity code switch (SW2
on the indoor controller board) on the
connected indoor unit.
Is it set properly?
Yes
Check the model selection switch (SW4 on
the outdoor controller board) of the outdoor
unit.
OCH810A
Total capacity error
Diagnosis
Is it set properly?
Yes
Causes and checkpoints
The total capacity of connected indoor units exceeds
the specified capacity (without Branch Box / with
Branch Box).
· SM36: up to code 32/29
· SM42: up to code 39/35
· SM48: up to code 43/40
· SM60: up to code 56/53
The model name code of the outdoor unit is
registered wrongly.
Correct it so that the total capacity of
No
connected indoor units is under 130% of
the outdoor unit capacity.
No
No
103
Remedy
Set the switch properly.
Set the switch properly.
Complete.