Climate Talk Communication System Combination Error (Before Initial Setting For Communication Completes) - Daikin RXSQ24TAVJU Service Manual

SiUS331708EA
4.62 Climate Talk Communication System Combination Error
(Before Initial Setting for Communication Completes)
UH-05
Error Code
Applicable CXTQ-TA
Models
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
minutes after the power is turned on.
Conditions
Supposed
Causes
Troubleshooting
Service Diagnosis
Two or more gas furnaces are detected.
Any unit other than the gas furnace is detected.
The initial setting for communication does not complete.
Connection of wrong devices
The power of the gas furnace is not turned on, or the power of the gas furnace is turned on after
a certain period of time has been elapsed after the power of the CXTQ was turned on.
Disconnection of the communication wire between the CXTQ and the gas furnace
Two or more gas furnaces are connected to one CXTQ.
No gas furnace is connected.
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 are turned on at
the same time.
YES
1 and 2
terminals of the
gas furnace and the
CXTQ are connected
each other.
YES
YES
NO
NO
Troubleshooting by Error Code
Connect the gas furnace of
proper combination. Do not
connect any other devices.
Turn on the gas furnace
and the CXTQ at the same
time.
Ensure correct wiring of the
communication wire
between terminals.
Replace the CXTQ PCB or
the gas furnace PCB.
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