Daikin Stylish Series - Repair Procedures

2 | Components
Service manual
64
(C)(F)TXA15~50A(W)(S)(T) + (C)(F)TXA15~50B(B)(S)(T) + RXA42+50A +
RXA20~35A + RXA42+50B
Split Stylish R32
ESIE18-03C – 2020.02
f High pressure switch reset pressure
3 Disconnect the Faston connectors from the high pressure switch.
4 Measure the resistance between the Faston connections of the high pressure
switch. The switch MUST be closed.
5 Fill the refrigerant circuit with nitrogen until pressurized just above operating
pressure of the high pressure switch.
6 Measure the resistance between the Faston connections of the high pressure
switch. The switch MUST be open.
INFORMATION
If the high pressure switch was triggered open, it will stay open until the refrigerant
pressure drops below the reset pressure of the high pressure switch.
7 Lower the pressure of the nitrogen in the refrigerant circuit just above reset
pressure of the high pressure switch.
8 Measure the resistance between the Faston connections of the high pressure
switch. The switch MUST be open.
9 Lower the pressure of the nitrogen in the refrigerant circuit just below reset
pressure of the high pressure switch.
10 Measure the resistance between the Faston connections of the high pressure
switch. The switch MUST be closed.
High pressure switch connector
measurements are correct?
Then
Yes High pressure switch is OK. Return to
the troubleshooting of the specific error
and continue with the next procedure.
No Replace the high pressure switch, see
"2.5.2Repair procedures"[464].
2.5.2 Repair procedures
To remove the high pressure switch
Prerequisite: Stop the unit operation via the user interface.
Prerequisite: Turn OFF the respective circuit breaker.
Prerequisite: Remove the required plate work, see "2.13Plate work"[499].
Prerequisite: Recuperate the refrigerant from the refrigerant circuit, see
"3.2.2Repair procedures"[4137].
1 If needed, remove any parts to create more space for the removal of the high
pressure switch.
2 Disconnect the Faston connectors from the high pressure switch.