Mitsubishi Electric PUHY-200YMF-B Service Handbook page 144

Checking code Meaning, detecting method
7130 Different An exclusive R22 refrigerant indoor
indoor model unit was connected to a R407C
connected refrigerant outdoor unit.
abnormality
Cause
1) An error was made in the MAIN
board of the outdoor unit (replaced
with the wrong circuit board).
2) An error was made in selecting the
indoor unit (installation error).
3) An error was made in the indoor
unit's circuit board (replaced with
the wrong circuit board).
–142–
Checking method & Countermeasure
If the model name plate on the outdoor
unit says that it is an exclusive R22
model, and if error "7130" has occurred,
the MAIN board for the outdoor unit is
a R407C model circuit board, so re-
place it with the MAIN board for the R22
model.
If the model name plate for the indoor
unit is an exclusive R22 model, install
a unit which can also operate with
R407C.
If the model name plate on the indoro
unit indicates that it is also capable of
operating with R407C, and error "7130"
occurs, the indoor unit's circuit board
is for an exclusive R22 model, so re-
place it with the circuit board for a unit
which is also capable of using R407C.