Error Codes When Charging Refrigerant; Checks After Charging Refrigerant - Daikin VRV IV+ Installer And User Reference Manual

18.4.8 Error codes when charging refrigerant

18.4.9 Checks after charging refrigerant

REYQ8~20+REMQ5U7Y1B
VRV IV+ heat recovery
4P561154-1A – 2020.10
6 Perform the test procedure as described in "21 Commissioning" [
INFORMATION
▪
When a malfunction is detected during the procedure (e.g., in case of closed stop
valve), a malfunction code will be displayed. In that case, refer to
when charging
Resetting the malfunction can be done by pushing BS3. The procedure can be
restarted from
▪
Aborting the manual refrigerant charge is possible by pushing BS3. The unit will
stop and return to idle condition.
Code
Unusual low pressure on
suction line
Freeze-up prevention indoor
unit
Indoor unit is out of
temperature range for leak
detection operation
Outdoor unit is out of
temperature range for leak
detection operation
Indicates an indoor unit which
is not compatible with leak
detection functionality is
installed (e.g. Hydrobox units,
...)
Other —
malfunction
code
▪ Are all stop valves open?
▪ Is the amount of refrigerant, that has been added, recorded on the refrigerant
charge label?
refrigerant" [ 4 107] and solve the malfunction accordingly.
"Step 6b: To manually charge
Cause
18 Piping installation
|
4
145].
"Error codes
refrigerant" [ 4 106].
Solution
Close valve A immediately. Push
BS3 to reset. Check following
items before retrying
autocharge procedure:
▪ Check if all gas-side stop
valves are 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
BS3 to reset. Retry autocharge
procedure.
Retry when ambient conditions
are satisfied.
Retry when ambient conditions
are satisfied.
Refer to requirements to be
able to execute leak detection
operation.
Close valve A immediately.
Confirm the malfunction code
and take corresponding action,
"24.1 Solving problems based
4
on error codes" [ 154].
Installer and user reference guide
is
107