Daikin Altherma 3 M - Page 188

3 | Components
Service manual
188
EBLA09~16DA + EDLA09~16DA
Daikin Altherma 3 M
ESIE20-06A – 2021.03
c
d
a
b
a VAC in (anode of D801)
b VAC in (N = X802A: 2)
c VDC out (+)
d VDC out (–)
INFORMATION
When measuring on the front of the main PCB, make sure to locally remove the
protective varnish with the test leads of the multi meter.
VDC Com Ref VDC Com Ref
a c 0.505V c a O.L
b c 0.505V c b O.L
d a 0.567V a d O.L
d b 0.567V b d O.L
2 If a diode module is NOT OK, replace the main PCB, see "Repair
procedures"[4190].
To perform a power module check
Prerequisite: First check the rectifier voltage of the main PCB, see "Checking
procedures"[4181].
Prerequisite: Stop the unit operation via the user interface.
1 Turn OFF the respective circuit breaker.
DANGER: RISK OF ELECTROCUTION
Confirm the rectifier voltage is below 10 V DC before proceeding, see "To prevent
electrical hazards"[4285].
Power module V3R for compressor
1 Disconnect the compressor Faston connectors from the main PCB.
2 Check the power module V3R in reference with the image and the table
below.