Check code
Abnormal points and detection methods
Causes and checkpoints
When the connected indoor unit exceeds the limit, a check code <7102> is
displayed.
Connecting more indoor units and branch boxes than
the limit.
Abnormal if connecting status does not comply with the
following limit;
1. Connectable up to 12 indoor units
2. Connect at least 1 indoor unit (Abnormal if
connected none).
3. Connectable up to 2 branch boxes
●Diagnosis of defects
Make sure to turn the power OFF before connecting/disconnecting any connectors, or replacing boards.
Diagnosis
Remedy
7102
(EF)
Connecting excessive number of units
and branch boxes
Yes
No
No
Yes
Check if at least 1 indoor unit is
connected. Is an indoor unit
connected?
Does it exceed the limit?
Connect indoor unit.
Connect less number of units than the
limit.
Note: 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 whether the connecting unit
exceeds the limit or not.
95
OCH668G
