Total Capacity Error - Mitsubishi Electric PUMY-P112VKM3 Technical & Service Manual

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 defectives
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 multi controller circuit board) of
the outdoor unit.
OCH632A

Total capacity error

Diagnosis
Is it set properly?
Yes
Causes and check points
The total capacity of connected indoor units
exceeds the specified capacity. (The total codes of
indoor units excluding PWFY unit, Cylinder unit, and
Hydrobox. )
WITHOUT PWFY
unit, Cylinder
unit, or Hydrobox
PUMY connection
P112 35
P125 41
P140 47
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
98
WITH PWFY ecodan unit,
unit, Cylinder Cylinder unit,
unit, or Hydrobox or Hydrobox
connection connection
28 20
31 20
38 20
Remedy
Set the switch properly.
Set the switch properly.
Complete