Mitsubishi Electric CMB-PW202V-J Service Handbook page 95

[ VIII Troubleshooting ]
1. Error Code
7130
Incompatible unit combination
2. Error definition and error detection method
An error code appears when the connected indoor units or outdoor units are for use with other types of refrigerant.
3. Error source, cause, check method and remedy
Error source
Outdoor unit
HWE09070
Cause
The connected outdoor unit is for use with a
refrigerant other than R410A.
The connected outdoor unit is old type (older
than YGM or YHM with a S/W version that
does not support WCB).
Incorrect type of indoor units are connected.
The M-NET connection adapter is connected
to the indoor unit system in a system in which
the Slim Model (A control) of units are con-
nected to the M-NET.
Check method and remedy
Check the model names of the connected in-
door units and outdoor units.
Check whether the connecting adapter for
M-NET is not connected to the indoor unit.
(Connect the connecting adapter for M-NET
to the outdoor unit.)
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