Check code
Abnormal points and detection methods Causes and check points
When the connected AC unit exceeds the limit, a check code <7102> is
displayed.
Connecting more AC units than the limit
Abnormal if connecting status does not comply with the
following limit;
Connectable up to 12 indoor units
Connect at least 1 indoor unit (Abnormal if connected
none)
Connectable only 1 ventilation unit
●Diagnosis of defectives
Make sure to turn the power OFF before connecting/disconnecting any connectors, or replacing boards.
Diagnosis Remedy
7102
Connecting excessive number of units
Yes
No
No
Yes
Is an indoor unit connected?
Does it exceed the limit?
Connect indoor unit.
Connect less number of units than the
limit.
The model code of the connected indoor
unit can be displayed by an operation of
SW1 on the outdoor unit.
Check whether the M-NET line to the
indoor unit is connected or not.
Check if at least 1 indoor unit is connected.
Check whether the connecting unit
exceeds the limit or not.
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