Daikin VRV RXYQ72-384XAYCA, Service Manual

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SiUS342004EB Troubleshooting by Error Code
Part 6 Service Diagnosis 228
3.2.3 Low-Temperature Hydrobox
Regarding the sub error codes and detailed troubleshooting by error codes related to the
low-temperature hydrobox (HXY-TA), refer to the service manual SiUS392016EA.
U9 - 01
Other indoor units abnormality Refer to the U9 flowchart and make a diagnosis of the
relevant unit based on the Error code shown to the left.
UA - 13
Refrigerant type error The type of refrigerant used for the indoor unit is different
from that used for the outdoor unit.
UA - 15
Not applicable for self-cleaning decoration panel
[when the self-cleaning decoration panel is mounted]
An outdoor unit is not applicable for the self-cleaning
decoration panel is connected.
UA - 17
Incorrect electric heater capacity setting Refer to page 347.
Connection of excessive indoor units Refer to the UA flowchart and make a diagnosis of the
relevant unit based on the Error code shown to the left.
UA - 18 Connection of wrong models of indoor units
UA - 20 Improper combination of outdoor units
UA - 21 Connection error
UA - 29 Branch selector unit connected
UA - 35 Multi-unit combination error
UF - 01 Wrong wiring check error Refer to the UF flowchart and make a diagnosis of the
relevant unit based on the Error code shown to the left.
UF - 05 Defective stop valve for test operation
UH - 01
Wiring error Refer to the UH flowchart and make a diagnosis of the
relevant unit based on the Error code shown to the left.
UH - 05
Climate Talk Communication system combination error
(before initial setting for communication completes)
Refer to page 355.
UH - 06
Climate Talk Communication system combination error
(after initial setting for communication completes)
Refer to page 356.
Error code
Troubleshooting
Error Description Diagnosis