Combination Abnormality - Altherma Hydro Unit Detected; Combination Abnormality - Incorrect Combination; Combination Abnormality - Wrong Unit Combination; Wiring And Piping Mismatch - Auto Address - Daikin VRV IV+ Service Manual

2 Troubleshooting
INFORMATION
If all procedures listed above have been performed and the
problem is still present, contact the helpdesk.
2.3.149 UA-38 – Combination abnormality -
Altherma hydro unit detected
Trigger Effect
Main PCB on main Forced stop.
outdoor unit detects
Altherma hydrobox
on F1-F2 IN wiring.
To solve the error code
INFORMATION
It is recommended to perform the checks in the listed
order.
1 Only LT Hydrobox HXY-A unit is allowed in the installation. See
the Databook for more information.
INFORMATION
If all procedures listed above have been performed and the
problem is still present, contact the helpdesk.
2.3.150 UA-39 – Combination abnormality -
Incorrect combination
Trigger Effect
Main PCB on main Forced stop.
outdoor unit detects
compatibility issues.
To solve the error code
INFORMATION
It is recommended to perform the checks in the listed
order.
1 Check for improper combination of units. See the combination
table in the Databook for more information. Change the
installation with ONLY compatible type units.
INFORMATION
If all procedures listed above have been performed and the
problem is still present, contact the helpdesk.
2.3.151 UA-49 – Combination abnormality - Wrong
unit combination
Trigger Effect
Main PCB on main Forced stop.
outdoor unit detects
compatibility issues.
To solve the error code
INFORMATION
It is recommended to perform the checks in the listed
order.
1 Check for improper combination of units. See the combination
table in the Databook for more information. Change the
installation with ONLY compatible type units.
INFORMATION
If all procedures listed above have been performed and the
problem is still present, contact the helpdesk.
Service manual
64
https://daikin-p.ru/catalog/vrv-daikn/naruzhnye-vrv-bloki-daikin
Reset
Automatic reset after
re-initialization
detects compatible
units.
Reset
Automatic reset after
re-initialization
detects compatible
units.
Reset
Automatic reset after
re-initialization
detects compatible
units.
2.3.152 UF-01 – Wiring and piping mismatch -
Auto address inconsistency on F1-F2
transmission
Trigger Effect
Minimum 1 indoor Forced stop.
unit fails to perform
cross pipe check
during test run.
To solve the error code
INFORMATION
It is recommended to perform the checks in the listed
order.
1 Check that all stop valves of the refrigerant circuit are open.
See "4.2 Refrigerant circuit" on
Possible cause: Closed stop valve in the refrigerant circuit.
2 Check that the refrigerant circuit piping and wiring connections
of the system are correctly installed.
Possible cause: Refrigerant piping and/or wiring mismatch.
3 Set field setting 2‑5 of the outdoor unit to 1 to start the indoor
units connected to that outdoor unit on forced fan operation,
see "6.9 Field settings" on page 188. If any of these indoor units
is NOT operating, check the indoor unit(s) that have power
black‑out or malfunctioning PCB. See service manual of the
respective indoor unit for more information.
Possible cause: Power black‑out or malfunctioning PCB on
indoor unit(s).
4 Check field setting 1‑10 to count the indoor units, see
settings" on page 188. If less indoor units detected than it
should be, check the indoor unit(s) that have power black‑out or
malfunctioning PCB. See service manual of the respective
indoor unit for more information.
Possible cause: Power black‑out or malfunctioning PCB on
indoor unit(s).
5 Perform a check of the indoor unit pipe thermistors, see service
manual of the respective indoor unit(s) for more information.
Possible cause: Faulty indoor unit pipe thermistor.
INFORMATION
If all procedures listed above have been performed and the
problem is still present, contact the helpdesk.
2.3.153 UF-05 – Wiring and piping mismatch -
Stop valves closed or incorrect
Trigger Effect
Minimum 1 indoor Forced stop.
unit fails to perform
cross pipe check
during test run.
To solve the error code
INFORMATION
It is recommended to perform the checks in the listed
order.
1 Check that all stop valves of the refrigerant circuit are open.
See "4.2 Refrigerant circuit" on
Possible cause: Closed stop valve in the refrigerant circuit.
2 Check that the refrigerant circuit piping and wiring connections
of the system are correctly installed.
Possible cause: Refrigerant piping and/or wiring mismatch.
Reset
Perform test run.
page 133.
"6.9 Field
Reset
Perform test run.
page 133.
RYYQ+RYMQ+RXYQ8~20U7Y1B
VRV IV+ Heat Pump
ESIE18-14 – 2019.07