Daikin FTXA20A Service Manual page 105

To perform a diode module check
FTXA20~50A(W)(S)(T) + FTXA20~50B(B)(S)(T) + RXA42+50A +
RXA20~35A(9) + RXA42+50B
Split Stylish R32
ESIE18-03D – 2021.05
1 First check the rectifier voltage of the main PCB, see
4
procedures" [ 99].
INFORMATION
If the rectifier voltage is OK, the diode module is OK. If rectifier voltage is NOT OK,
replace the main PCB.
Below procedure describes how to check the diode module itself.
Prerequisite: Stop the unit operation via the user interface.
2 Turn OFF the respective circuit breaker.
DANGER: RISK OF ELECTROCUTION
Wait for at least 10 minutes after the circuit breaker has been turned OFF, to be sure
the rectifier voltage is below 10 V DC before proceeding.
3 Check the diode module in reference with the image and the table below.
A
A RXA42~50A unit
a V DC out (+)
b V AC in
c V AC in
d V DC out (–)
d
a b c
2 Components
|
"Checking
Service manual
105