Daikin FTXF A Series - Class 50~71 Units

2 | Components
Service manual
84
FTXF20~71A + FTXF20~25B + FTXF20~42C + ATXF20~71A + ATXF20~42C
+ RXF20~71A + RXF20~60B + RXF20~42C + ARXF20~71A + ARXF20~42C
Split Sensira R32
ESIE18-12E – 2021.02
2.8.2 Class 50~71 units
Checking procedures
INFORMATION
It is recommended to perform the checks in the listed order.
To perform a power check of the main PCB
Prerequisite: Stop the unit operation via the user interface.
Prerequisite: Turn OFF the respective circuit breaker.
Prerequisite: Remove the required plate work, see "2.10Plate work"[4101].
1 Turn ON the power of the unit.
2 Measure the voltage between the black and white wires.
Result: The measured voltage MUST be 230VAC.
a
b
a Black wire
b White wire
Is the measured voltage on the PCB
correct?
Action
Yes Return to "Checking
procedures"[484] of the PCB and
continue with the next procedure.
No Continue with the next step.
3 Check the power supply to the unit, see "3.1.1Checking procedures"[4127].
Does the unit receive power? Action
Yes Replace the main PCB, see "Repair
procedures"[489].
No Adjust the power supply to the unit, see
"3.1.2Repair procedures"[4128].
To check the HAP LED of the main PCB
Prerequisite: First check the power supply to the main PCB, see "Checking
procedures"[484].
1 Locate the HAP LED on the main PCB.