Daikin RXTA30B2V1B Service Manual page 212

5 | Third party components
To check if the refrigerant circuit is clogged
Service manual
212
a Cap
b Liquid stop valve
c Gas stop valve
2 Check if the stop valves are completely open.
The refrigerant circuit stop valves are
open?
Yes
No
Prerequisite: Stop the unit operation via the user interface.
Prerequisite: Turn OFF the respective circuit breaker.
1 Wait for the refrigerant to reach the outdoor temperature.
2 Check that all field piping is done according to the refrigeration practice and
installer reference guide:
▪ Correct piping diameters
▪ Piping distance limits are followed
▪ NO pipes are squeezed
▪ NO short radius bends
3 Connect a manometer to the service port.
4 Turn ON the power of the unit.
5 Activate Heating operation via the user interface.
6 Read the pressure on the pressure gauge. If, at the start of the unit operation,
the pressure is high or very low, the refrigerant circuit might be clogged.
b
a
a
c
Action
Return to the troubleshooting of the
specific error and continue with the
next procedure.
Open the stop valves of the refrigerant
circuit, see "5.2.2 Repair
4
procedures" [
RXTM-R+RXTP-R+ARXTP-R+RXTA-B+FTXTA30B2V1B(W)
(B)+FTXTM30+40R2V1B+FTXTP25+35M5V1B+ATXTP25+35M5V1B
216].
R32 Optimized Heating 4 Split
ESIE21-12A – 2022.02