External Factors; Checking Procedures - Daikin Perfera ARXM25A Service Manual

4 | Third party components

4.3 External factors

4.3.1 Checking procedures

To check the outdoor temperature
To check for objects that may block the airflow
Service manual
62
draft – 21/12/2023 13:09
▪ After stopping the vacuum pump, the absolute pressure MUST be kept below
270 Pa for at least 30 minutes, without a significant increase of pressure. If
pressure increases significantly, this is an indication of the presence of moisture
in the system.
▪ If multiple vacuum cycles need to be performed, break the vacuum between the
cycles using dry nitrogen.
Depending on the site conditions, as mentioned above, lower pressure values
MIGHT be needed to allow the boiling of the moisture in the system. The table
below shows the boiling point of water for different absolute pressures.
Pressure (absolute)
Micron / Torr
760000 / 760
50000 / 50
10000 / 10
2000 / 2
1000 / 1
500 / 0.5
1 The temperature ranges for the different operation modes of the unit can be
found in the databook on Business Portal.
INFORMATION
If the outdoor temperature is outside the range of operation, the unit may NOT
operate or may NOT deliver the required capacity.
Is the outdoor temperature within the
operating range?
Yes
No
1 Check for the presence of object(s) near the indoor unit that may block the
airflow. Remove the object(s) as needed.
Is the problem solved?
Yes
No
Mbar / Pa
1013 / 101325
66 / 6666
13 / 1333
2.6 / 266
1.33 / 133
0.66 / 66
Action
Return to the troubleshooting of the
specific error and continue with the
next procedure.
Wait for the outdoor temperature to
return within the operating range.
Action
No further actions required.
Return to the troubleshooting of the
specific error and continue with the
next procedure.
RXM20~50A + ARXM25~50A + FTXM20~50A + ATXM20~50A + CTXM15A
Boiling point
°C
100
38
11
−10
−18
−24
Split Perfera ZETA R32
ESIE23-06 – 2023.12