To Manually Perform A Leak Detection - Daikin VRV IV+ RYYQ14U7Y1B Series Installer And User Manual

20 | Configuration

20.4.2 To manually perform a leak detection

Installer and user reference guide
144
INFORMATION
▪
The weighed and already recorded amount of additional refrigerant charge (not
the total amount of refrigerant present in the system) must be entered.
▪
The leak detection function is not available when Hydrobox units or RA DX indoor
units are connected to the system.
▪
When the height difference between indoor units is ≥50/40 m, the leak detection
function can not be used.
When the leak detection functionality was initially not required but activation is
wanted on a later moment, it is required to fulfil below conditions:
▪ The additional refrigerant charge needs to be inputted in the system's logic.
▪ The system test run has to be re-executed.
Executing the leak detection function one time at site can also be done by
following procedure.
1 Push BS2 one time.
2 Push BS2 one more time.
3 Push BS2 5 seconds.
4 Leak detection function will start. To abort leak detection operation, push BS1.
Result: If manual leak detection was executed, the result of leak detection is
shown on the outdoor unit 7‑segment display. Indoor units are in locked state
(centralised control symbol). The result corresponds with the list below. To get
more detailed information: check through mode 1 to know the exact amount. To
return to normal state, push BS1.
Display Leaked amount (kg)
0≤x<0.5
0.5≤x<1
1≤x<1.5
1.5≤x<2
2≤x<2.5
2.5≤x<3
3≤x<3.5
3.5≤x<4
4≤x<4.5
4.5≤x<5
5≤x<5.5
5.5≤x<6
6≤x<6.5
6.5≤x<7
7≤x<7.5
7.5≤x<8
8≤x<8.5
RYYQ+RYMQ+RXYQ8~20U7Y1B
VRV IV+ heat pump
4P546228-1B – 2020.10