Daikin RXSQ24TAVJU Service Manual page 150

Test Operation
Error code
UA
UF
UH
No display
UH-05
UH-06
C1-08
A0-01
AA-03
137
Description
Defective indoor unit connection or mismatched
models (R-410A, R-407C, RA, Hydrobox, etc.).
Defective indoor unit connection or mismatched
models (R-410A, R-407C, RA, Hydrobox, etc.).
Wrong combination of units (multi-unit system)
Wrong combination of units (multi-unit system)
Gas furnace connection error
Defective automatic addressing (inconsistency)
Stop valve closed or defective (During system
test operation)
Defective automatic addressing (inconsistency)
Error in connection/communication among
indoor unit remote controllers.
Climate Talk Communication System
Combination Error (Before Initial Setting for
Communication Completes)
Climate Talk Communication System
Combination Error (After Initial Setting for
Communication Completes)
Climate Talk Communication Error
External Protection Device Abnormality
Gas Furnace Abnormality
Solution
Check if there are any other defective indoor
units and verify if the indoor unit combination
meets requirements.
Check if there are any other defective indoor
units and verify if the indoor unit combination
meets requirements.
Check the compatibility of unit types.
Check the compatibility of unit types.
Check that two or more "CXTQ-TA + gas
furnace" and other indoor units other than CXTQ-
TA are not connected.
Check if the quantity of connected units is below
the maximum number of units that can be
connected (through monitoring mode) or if
initiation is complete.
Open the stop valve.
Check if the quantity of connected units is below
the maximum number of units that can be
connected (through monitoring mode) or if
initiation is complete.
Check if there is any disconnection or loosening
of connectors.
Power on the gas furnace.
Check the Climate Talk transmission wiring.
Check if unconnectable unit is on Climate Talk
transmission wiring.
(CXTQ-TA must have only one gas furnace
certified with CXTQ-TA on the Climate Talk
circuit)
Check if unconnectable unit is on Climate Talk
transmission wiring.
(CXTQ-TA must have only one gas furnace
certified with CXTQ-TA on the Climate Talk
circuit)
Power on the gas furnace.
Check the Climate Talk transmission wiring.
Do not expose the Climate Talk transmission
wiring to electrical noise.
Check if 24 VAC power has been supplied to R
and C terminals.
Check if TB4 and TB5 terminals have not been
opened.
Check F1U fuse.
The gas furnace has had any error. Check 7
segment LEDs on the gas furnace PCB.
Field Settings and Test Operation
SiUS331708EA