Climate Talk Communication System Combination Error (Before Initial Setting For Communication Completes) - Daikin VRV Aurora RXLQ-TATJU Series Service Manual

Troubleshooting by Error Code
3.78 Climate Talk Communication System Combination Error
(Before Initial Setting for Communication Completes)
Applicable
CXTQ-TA
Models
UH-05
Error Code
Method of Error
Detects the type of the devices constituted in Climate Talk Communication.
Detection
Error Decision
The error decision is made when any of the following conditions is established before elapsing 4
Conditions minutes after the power is turned ON.
 Two or more gas furnaces are detected.
 Any unit other than the gas furnace is detected.
 The initial setting for communication does not complete.
Supposed
 Connection of wrong devices
Causes  The power of the gas furnace is not turned ON, or the power of the gas furnace is turned ON
 Disconnection of the communication wire between the CXTQ-TA and the gas furnace
 Two or more gas furnaces are connected to one CXTQ-TA.
 No gas furnace is connected.
Troubleshooting
365
after a certain period of time has been elapsed after the power of the CXTQ-TA was turned ON.
Be sure to turn off the power switch before connecting or disconnecting
Caution connectors, or parts may be damaged.
Any
device other
than the gas
furnace of proper
combination is connected
to 1 and 2
terminals of
X8A.
NO
The gas
furnace and the
CXTQ-TA are turned ON
at the same
time.
YES
1 and 2
terminals of the
gas furnace and the
CXTQ-TA are
connected each
other.
YES
YES
NO
NO
SiUS341802EC
Connect the gas furnace of
proper combination. Do not
connect any other devices.
Turn ON the gas furnace
and the CXTQ-TA at the
same time.
Ensure correct wiring of the
communication wire
between terminals.
Replace the CXTQ-TA PCB
or the gas furnace PCB.
Part 6 Service Diagnosis