Daikin VRV IV+ Installer And User Reference Manual page 159

Main code
Master
Auto charging related
Leak detection function related
REYQ8~20+REMQ5U7Y1B
VRV IV+ heat recovery
4P561154-1A – 2020.10
Sub code
Slave 1 Slave 2
—
—
—
—
Cause
Connection malfunction over
indoor units or type mismatch
(R410A, R407C, Hydrobox, etc)
Connection malfunction over
indoor units or type mismatch
(R410A, R407C, Hydrobox, etc)
Wrong unit combination (multi
system)
Wrong outdoor unit connected Disconnect the outdoor unit.
No BS unit connected
Old BS unit connected
BS unit DIP switch abnormality
Auto address malfunction
(inconsistency)
Auto address malfunction
(inconsistency)
Stop valve closed or wrong
(during system test run)
Unusual low pressure on
suction line
Freeze-up prevention indoor
unit
Automatic charging nearly
finished
Automatic charging finished
24 Troubleshooting
|
Solution
Check if other indoor units have
malfunction and confirm indoor
unit mix is allowed.
Check if other indoor units have
malfunction and confirm indoor
unit mix is allowed.
Check if unit types are
compatible.
Connect a BS unit.
Disconnect the BS unit.
Check the DIP switches of the
BS unit.
Check if transmission wired unit
amount matches with powered
unit amount (by monitor mode)
or wait till initialisation is
finished.
Check if transmission wired unit
amount matches with powered
unit amount (by monitor mode)
or wait till initialisation is
finished.
Open stop valves.
Close valve A immediately. Push
BS1 to reset. Check following
items before retrying
autocharge procedure:
▪ Check if the gas side stop
valve is opened correctly.
▪ Check if the valve of the
refrigerant cylinder
opened.
▪ Check if the air inlet and
outlet of the indoor unit are
not obstructed.
Close valve A immediately. Push
BS1 to reset. Retry autocharge
procedure.
Prepare for autocharge
stopping.
Finish autocharge mode.
Installer and user reference guide
is
159