Climate Talk Communication Error - Daikin RXSQ24TAVJU Service Manual

SiUS331708EA

4.21 Climate Talk Communication Error

C1-08
Error Code
Applicable
CXTQ-TA
Models
Method of Error
Monitors the communication with the gas furnace connected to the Climate Talk Communication
Detection terminal.
Error Decision
The error decision is made when the communication with the gas furnace is lost after once the
initial setting for communication with the gas furnace completes.
Conditions
Supposed
Causes
Troubleshooting
Service Diagnosis
Disconnection of the communication wire between the CXTQ-TA and the gas furnace
Power supply to the gas furnace is cut.
Be sure to turn off the power switch before connecting or disconnecting
Caution connectors, or parts may be damaged.
The
power of the gas
furnace is turned on.
YES
1 and 2
terminals of the gas
furnace and the CXTQ-TA are
connected each
other.
YES
The
communication
wire to the gas furnace
picks up noise.
NO
NO
NO
YES
Troubleshooting by Error Code
Turn on the power of the
gas furnace.
Ensure correct wiring of the
communication wire
between terminals.
Keep the communication
wire away from the noise
source.
Replace the CXTQ-TA PCB
or the gas furnace PCB.
186