Troubleshooting; Troubleshooting Table - Daikin DCM601A51 Technical Data Manual

Commissioning Manual
Appendix
8. Useful Information

8-1 Troubleshooting

Troubleshooting table

Remote operation
DIII-NET
310
Problem Checking method
Cannot remotely operate iTM from When iTM and PC are connected via
the PC. hub, check whether they are correctly
connected.
Check that iTM is turned on.
Check whether the network settings
on the PC 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.
All management points on the same Check whether the DIII-NET cable is
DIII-NET are experiencing correctly connected to the iTM DIII-NET port.
communication error.
Check whether the DIII-NET cable
between the iTM and outdoor unit is
correctly connected.
Some of the management points are Check whether the group address is
experiencing communication error. set up for the management points.
Check whether the number of connected
indoor units is exceeding the maximum
number of indoor units that can be connected.
Check whether the total wire length
is exceeding the guidelines.
Check the status of the management
points against the wiring diagram.
A management point experiences Check the wire used.
communication error intermittently.
Check the actual wire status against
the wiring diagram.
C h e ck 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.
Check whether the total wire length
is exceeding the guidelines.
Check the connection status of
DIII-NET pin terminals.
Check the status of the terminal
board.
Check the installation status of other
units.
A "Duplicated parent centralized Check whether there is any other
control on DIII port" is output. central unit set up as parent.
A "DIII port transmission buffer Check the wire used.
Check the actual wire status against
the wiring diagram.
Check the connection status of
DIII-NET pin terminals.
Check the installation status of other
units.
Commissioning Manual EM11A021
DCM601A51 intelligent Touch Manager
Cause
PC is not connected with iTM. Connect the iTM and PC via hub
using LAN cables.
Cross cables are used as the LAN cable Use straight cables as LAN cable for
for connecting the iTM and PC via hub. connecting the iTM and PC via hub.
The hub is turned off. Turn on the hub.
The iTM is turned off. Turn on the iTM.
The network settings on the PC are Modify the network settings on the
incorrect. PC so that they are in conformity with
the settings described in this manual.
The LAN cable connecting the iTM Connect the iTM and PC using a
and PC is a straight cable. cross cable.
The procedure described in this Install again by following the
manual has not been followed. procedure in this manual.
The DIII-NET cable is not correctly Connect the DIII-NET cable to the
connected to the iTM DIII-NET port. correct iTM DIII-NET port.
The DIII-NET cable between the iTM and Correctly connect the DIII-NET cable
outdoor unit is not correctly connected. to the iTM and outdoor unit.
The group address is not set up for Set up the correct group address for
the management points. the management points.
The total number of connected indoor The total number of connected indoor
units exceeds 64 groups, 128 units. units must not exceed 64 groups, 128
units.
The total wire length exceeds 2000m. The total wire length must not exceed
(For shielded cords, the total wire 2000m (1500m for shielded cords).
length exceeds 1500m)
Connection is done to the wrong DIII- Connect to the correct DIII-NET port.
NET port.
The wire used in DIII-NET has 3 or Change to a wire with the designated
more cores.
The wiring on the DIII-NET is that of Connect DIII-NET again so that wiring does not
a branch wire after branching. become that of a branch wire after branching.
The total number of connected indoor The total number of connected indoor
units exceeds 64 groups, 128 units. units must not exceed 64 groups, 128
units.
The total wire length exceeds 2000m. The total wire length must not exceed
(For shielded cords, the total wire 2000m (1500m for shielded cords).
length exceeds 1500m)
connected.
There are three or more wires Limit the number of wires to connect
connected to one terminal. to one terminal to two.
There is a source of noise around the Separate DIII-NET from the source of
DIII-NET. noise.
There are multiple central units set Disconnect all connectors for parent
up as "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)
The wire used in DIII-NET has 3 or Change to a wire with the designated
more cores.
The wiring on the DIII-NET is that of Connect DIII-NET again so that wiring
a branch. does not become that of a branch.
connected.
There is a source of noise around the Separate DIII-NET from the source of
DIII-NET. noise.
ED721208
Measure
120