Daikin VRV IV+, Installer And User Reference Manual

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6 | Installation
Installer and user reference guide
73
RYYQ+RYMQ+RXYQ8~20U7Y1B
VRV IV+ heat pump
4P546228-1A – 2019.10
If Then
" ", " ", or " " appears Push BS1 to finish the automatic charging
function procedure. The ambient conditions are
favourable to execute the test run.
" ", or " " appears The ambient conditions are NOT favourable to
execute the test run. Push BS1 to finish the
automatic charging procedure.
INFORMATION
In case a malfunction code occurred during this automatic charging procedure, the
unit will stop and indicate "
" flashing. Push BS2 to restart the procedure.
Cooling (middle 7‑segment display indicates " ")
Automatic charging will continue, the 7‑segment display indication shows the
current low pressure value and the status indication "
" intermittent.
If the 7‑segment display indication/user interface of indoor unit shows " " code,
charging is almost finished. When the unit stops operating, close valve A
immediately and check whether the 7‑segment display indication/user interface of
indoor unit shows "
". This indicates the automatic charging in cooling program
was finished successfully.
INFORMATION
When the charging amount is little, the " " code may not be displayed, but instead
the " " code will be displayed immediately.
When the required (calculated) additional refrigerant amount is already charged
before "
" or " " indication appears, close valve A and wait till " " is displayed.
If during the cooling operation for the automatic refrigerant charge the ambient
conditions go beyond the allowable for this operation mode, the unit will indicate
on the 7‑segment display "
" in case indoor temperature is out of range or " "
in case the outdoor temperature is out of range. In this case, when the additional
refrigerant charging was not finished, step
"6.7.6 Step 6a: To automatically charge
refrigerant" [
4
72] has to be repeated.
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
"10.2 Solving
problems based on error codes" [ 4 116] and solve the malfunction accordingly.
Resetting the malfunction can be done by pushing BS1. The procedure can be
restarted from
"6.7.6 Step 6a: To automatically charge refrigerant" [ 4 72].
▪
Aborting the automatic refrigerant charge is possible by pushing BS1. The unit will
stop and return to idle condition.
Perform the test procedure as described in "8 Commissioning" [
4
108].
6.7.7 Step 6b: To manually charge refrigerant
The remaining additional refrigerant charge can be charged by operating the
outdoor unit by means of the manual refrigerant charge operation mode:
1 Take all the precautions mentioned in "7 Configuration" [
4
84] and
"8 Commissioning" [
4
108] into account.
2 Turn on the power of the indoor units and outdoor unit.