Daikin VRV IV+ Service Manual page 171

2.3.172 UA-18 – Combination abnormality - Outdoor unit not compatible with indoor units
(refrigerant type)
2.3.173 UA-19 – Combination abnormality - Local set alarm
REYQ8~20+REMQ5U7Y1B
VRV IV+ Heat Recovery
ESIE18-15B – 2020.05
Trigger
Main PCB on main
outdoor unit detects
compatibility issues.
Outdoor unit NOT
compatible with indoor
units (refrigerant type).
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.
Trigger
Main PCB on main
outdoor unit detects
compatibility issues.
Main PCB detects field
setting abnormality, local
set alarm.
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" [
INFORMATION
If all procedures listed above have been performed and the problem is still present,
contact the helpdesk.
Effect
Forced stop.
Effect
Forced stop.
4
455].
2 Troubleshooting
|
Reset
Automatic reset after
re‑initialization detects
compatible units.
Reset
Automatic reset after
re‑initialization detects
compatible units and
normal field settings.
Service manual
171