2.3.140 Ua-00 - Combination Abnormality; Combination Abnormality - Mix Of R22, R407C And R410A Type Units Detected; Combination Abnormality - More Than 64 Indoor Units Detected On Same System; Combination Abnormality - Local Setting Abnormality - Daikin VRV IV+ Service Manual

2 Troubleshooting
To solve the error code
INFORMATION
It is recommended to perform the checks in the listed
order.
1 Check the indoor units for error codes other than U9‑01. See
troubleshooting in the service manual of the respective indoor
unit(s) to solve the error code(s).
2 Check for improper combination of units. See the combination
table in the Databook for more information. Change the
installation with ONLY compatible type units.
3 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).
4 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).
5 Perform a check of the main PCB. See
page 106.
Possible cause: Faulty main PCB.
6 Check the F1‑F2 transmission line between the indoor units and
outdoor unit. See "4.1 Electrical circuit" on
Possible cause: Faulty or interruption in transmission line
between indoor units and outdoor unit.
INFORMATION
If all procedures listed above have been performed and the
problem is still present, contact the helpdesk.
2.3.140 UA-00 – Combination abnormality
Trigger Effect
Combination Forced stop.
abnormality.
To solve the error code
INFORMATION
It is recommended to perform the checks in the listed
order.
1 Change the installation with ONLY R410A type indoor units.
INFORMATION
If all procedures listed above have been performed and the
problem is still present, contact the helpdesk.
2.3.141 UA-03 – Combination abnormality - Mix of
R22, R407C and R410A type units
detected
Trigger Effect
Mix of R22, R407C, Forced stop.
R410A type units
detected.
Service manual
62
https://daikin-p.ru/catalog/vrv-daikn/naruzhnye-vrv-bloki-daikin
"6.9 Field
"3.9 Main PCB" on
page 130.
Reset
Power reset and only
allowed combination.
Reset
Power reset and only
allowed combination.
To solve the error code
INFORMATION
It is recommended to perform the checks in the listed
order.
1 Change the installation with ONLY R410A type indoor units.
INFORMATION
If all procedures listed above have been performed and the
problem is still present, contact the helpdesk.
2.3.142 UA-16 – Combination abnormality - More
than 64 indoor units detected on same
system
Trigger Effect
Main PCB on main Forced stop.
outdoor unit detects
more than 64 indoor
units on same
system.
To solve the error code
INFORMATION
It is recommended to perform the checks in the listed
order.
1 Change the installation to include a maximum of 64 indoor
units.
INFORMATION
If all procedures listed above have been performed and the
problem is still present, contact the helpdesk.
2.3.143 UA-17 – Combination abnormality - Local
setting abnormality
Trigger Effect
Main PCB on main Forced stop.
outdoor unit detects
compatibility issues.
Main PCB detects
field setting
abnormality.
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.
2 Check and verify the outdoor unit field settings with the default
settings. See "6.9 Field settings" on
INFORMATION
If all procedures listed above have been performed and the
problem is still present, contact the helpdesk.
Reset
Automatic reset after
re-initialization
detects less than 64
compatible indoor
units.
Reset
Automatic reset after
re-initialization
detects compatible
units and normal field
settings.
page 188.
RYYQ+RYMQ+RXYQ8~20U7Y1B
VRV IV+ Heat Pump
ESIE18-14 – 2019.07