310
Commissioning Manual
ED721208
Commissioning Manual EM11A021
DCM601A51 intelligent Touch Manager
120
Appendix
8. Useful
Information
8-1 Troubleshooting
Troubleshooting table
Problem
Checking method
Cause
Measure
Remote operation
Cannot remotely operate iTM from
the PC.
When iTM and PC are connected via
hub, check whether they are correctly
connected.
PC is not connected with iTM.
Connect the iTM and PC via hub
using LAN cables.
Cross cables are used as the LAN cable
for connecting the iTM and PC via hub.
Use straight cables as LAN cable for
connecting the iTM and PC via hub.
The hub is turned off.
Turn on the hub.
Check that iTM is turned on.
The iTM is turned off.
Turn on the iTM.
Check whether the network settings
on the PC are in conformity with the
settings described in this manual.
The network settings on the PC are
incorrect.
Modify the network settings on the
PC so that they are in conformity with
the settings described in this manual.
When iTM and PC are connected
directly, check whether they are
connected using the correct cable.
The LAN cable connecting the iTM
and PC is a straight cable.
Connect the iTM and PC using a
cross cable.
The procedure described in this
manual has not been followed.
Install again by following the
procedure in this manual.
DIII-NET
All management points on the same
DIII-NET are experiencing
communication error.
Check whether the DIII-NET cable is
correctly connected to the iTM DIII-NET port.
The DIII-NET cable is not correctly
connected to the iTM DIII-NET port.
Connect the DIII-NET cable to the
correct iTM DIII-NET port.
Check whether the DIII-NET cable
between the iTM and outdoor unit is
correctly connected.
The DIII-NET cable between the iTM and
outdoor unit is not correctly connected.
Correctly connect the DIII-NET cable
to the iTM and outdoor unit.
Some of the management points are
experiencing communication error.
Check whether the group address is
set up for the management points.
The group address is not set up for
the management points.
Set up the correct group address for
the management points.
Check whether the number of connected
indoor units is exceeding the maximum
number of indoor units that can be connected.
The total number of connected indoor
units exceeds 64 groups, 128 units.
The total number of connected indoor
units must not exceed 64 groups, 128
units.
Check whether the total wire length
is exceeding the guidelines.
The total wire length exceeds 2000m.
(For shielded cords, the total wire
length exceeds 1500m)
The total wire length must not exceed
2000m (1500m for shielded cords).
Check the status of the management
points against the wiring diagram.
Connection is done to the wrong DIII-
NET port.
Connect to the correct DIII-NET port.
A management point experiences
communication error intermittently.
Check the wire used.
The wire used in DIII-NET has 3 or
more cores.
Change to a wire with the designated
URGEKƂECVKQP
Check the actual wire status against
the wiring diagram.
The wiring on the DIII-NET is that of
a branch wire after branching.
Connect DIII-NET again so that wiring does not
become that of a branch wire after branching.
C h e c k w h e t h e r t h e n u m b e r o f
connected indoor units is exceeding
the maximum number of indoor units
that can be connected.
The total number of connected indoor
units exceeds 64 groups, 128 units.
The total number of connected indoor
units must not exceed 64 groups, 128
units.
Check whether the total wire length
is exceeding the guidelines.
The total wire length exceeds 2000m.
(For shielded cords, the total wire
length exceeds 1500m)
The total wire length must not exceed
2000m (1500m for shielded cords).
Check the connection status of
DIII-NET pin terminals.
&+++0'6RKPVGTOKPCNUCTGPQVƂTON[
connected.
%QPPGEV&+++0'6RKPVGTOKPCNUƂTON[
Check the status of the terminal
board.
There are three or more wires
connected to one terminal.
Limit the number of wires to connect
to one terminal to two.
Check the installation status of other
units.
There is a source of noise around the
DIII-NET.
Separate DIII-NET from the source of
noise.
A “Duplicated parent centralized
control on DIII port” is output.
Check whether there is any other
central unit set up as parent.
There are multiple central units set
up as “parent”.
Disconnect all connectors for parent
centralized control from central units
other than the iTM.
When an upper central unit is connected,
disconnect the connector for parent
centralized control from the iTM. (Change
the DIII MASTER switch to SLAVE)
A “DIII port transmission buffer
QXGTƃQYqOGUUCIGKUQWVRWV
Check the wire used.
The wire used in DIII-NET has 3 or
more cores.
Change to a wire with the designated
URGEKƂECVKQP
Check the actual wire status against
the wiring diagram.
The wiring on the DIII-NET is that of
a branch.
Connect DIII-NET again so that wiring
does not become that of a branch.
Check the connection status of
DIII-NET pin terminals.
&+++0'6RKPVGTOKPCNUCTGPQVƂTON[
connected.
%QPPGEV&+++0'6RKPVGTOKPCNUƂTON[
Check the installation status of other
units.
There is a source of noise around the
DIII-NET.
Separate DIII-NET from the source of
noise.
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Страница 105: ...1 8 External Control Adaptor for Outdoor Unit DTA104A61 DTA104A62 DTA104A53 101 ED721208 Adaptor 4 ...
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