Daikin SkyAir RZR-TA Series Service Manual page 198

Test Operation
Primary
No display on the remote controller
 Error in connection/communication among indoor unit remote controllers. Check if there is any
Caution
For the plumber
For the electrician
Before giving the air conditioner back to the customer after a test operation, please make sure that
the casing is securely in place and the screws are well fastened.
192
Error code
Sub
code code
01 Q1/Q2 or indoor-outdoor units wiring error
U4 03 Q1/Q2 or indoor-outdoor units wiring error
04 System test operation ends abnormally.
System mismatch
Mismatched indoor unit models used (R-410A,
U9 01
R-407C, RA, Hydrobox, etc.).
Defective indoor unit
Defective indoor unit connection or
03 mismatched models (R-410A, R-407C, RA,
Hydrobox, etc.).
Defective indoor unit connection or
UA
18 mismatched models (R-410A, R-407C, RA,
Hydrobox, etc.).
31 Wrong combination of units (multi-unit system) Check the compatibility of unit types.
49 Wrong combination of units (multi-unit system) Check the compatibility of unit types.
Defective automatic addressing
(inconsistency)
01
UF
Stop valve closed or defective (During system
05
test operation)
Defective automatic addressing
(inconsistency)
UH 01
External protection device abnormality
A0 01
disconnection or loosening of connectors.
Description
SiUS281811EA
Solution
Check (Q1/Q2) wiring.
Check (Q1/Q2) wiring.
Re-execute the test operation.
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 if there are any other defective
indoor units and verify if the indoor unit
combination meets requirements.
Check if the quantity of connected
units is below the maximum number of
units that can be connected (through
monitor 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
monitor mode) or if initiation is
complete.
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.
Part 5 Field Settings and Test Operation