Mitsubishi Electric City Multi CMB-P1016NU-G, Service Handbook

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[
IX
Troubleshooting ]
7106 Attribute setting error MA remote controller intended
for use with indoor units, such
as an MA remote controller, is
connected to the OA process-
ing unit whose attribute is FU. To operate the OA processing unit
using remote controllers for indoor
units, such as MA remote controller,
set the DipSW3-1 on the OA pro-
cessing unit to ON.
7107 BC controller Port setting error
The port with wrong num-
ber is connected to the
indoor unit.The model to-
tal connected to the port
is greater than the speci-
fication.
(1) Model total of indoor units
per each port or per each
port merge is greater than
the specification.
(2) 4 or more indoor units are
connected to the same
port.
(3) When two ports are used,
the port with the smaller
number is not connected
to the indoor unit.
(4) For the address of the BC
controller (Sub 1 or 2), 50
is not added to the small-
est indoor unit address,
which is connected to the
BC controller (Sub1 or 2).
(5) In the system to which
multiple BC controllers are
connected, the indoor unit
address connected to the
BC controller is not set as
shown below.
(i) The indoor unit address
which is connected to the
BC controller (main)
(ii) The indoor unit address
which is connected to the
BC controller (Sub1)
(iii) he indoor unit address
which is connected to the
BC controller (Sub2)
Address setting
(i)<(ii)<(iii)
*(ii) and (iii) can be re-
versed.
Before resetting the port number
using the port number setting
switch or the model using the
model (capacity code) setting
switch, turn off the power of the
heat source unit, the BC control-
ler and the indoor unit.
Error
Code
Error source
Error definition and error
detection method
Cause Check method and remedy
SW 3-1
OFF
ON
Operation method
Direct operation with
the MA remote controller
Interlock with
the indoor unit
Model total Total port number
Single branching
2 branches merge
54
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