Gas Furnace Abnormality - Daikin RXSQ24TAVJU Service Manual

SiUS331708EA

4.16 Gas Furnace Abnormality

AA-03
Error Code
Applicable
CXTQ-TA
Models
Method of Error Detects the error signal from the gas furnace when any error occurs on the gas furnace. The indoor
Detection unit displays AA-03 for any sort of gas furnace abnormality.
Error Decision The error status differs depending on each error code of the gas furnace. Refer to the gas furnace
Conditions manual for details.
Supposed
The cause of the error differs depending on each error code of the gas furnace. Refer to the gas
Causes furnace manual for details.
Troubleshooting
∗1. In some cases of gas furnace abnormality regarding gas combustion, once an error occurs,
Note:
Service Diagnosis
Be sure to turn off the power switch before connecting or disconnecting
Caution connectors, or parts may be damaged.
Error code is
displayed on the gas
furnace PCB.
NO
display indication of AA-03 is retained even after the gas furnace recovered from the error to
notify the occurrence of the error.
The error indication disappears if you execute gas furnace combustion once or reset the indoor
unit power supply.
YES
Troubleshooting by Error Code
Take a measure responding to the
error code of the gas furnace.
Execute gas furnace combustion
operation once or reset the indoor
unit power supply. (∗1)
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