Daikin EUWA/Y5-30HB/C(Z), Service Manual

Page: 65 / 152

ESIE98–06A Functional Control
Part 2 – Functional Description 2–9
3
2
4
5
1
1.5 Defrost Circuit Control
Defrost PCB layout The following picture shows the layout of the defrost PCB:
An overview of the inputs and outputs of the defrost PCB is given in ‘Defrost PCB’ on page 3-6
C D T
1
T
2
A
+3 -3
B
CN 1
CN 2
green LED
C
P
U
= defrost switch -3˚C till +3˚C
normal (=flashing)
CN1 = coil sensor
CN2 = ambient sensor
A-B = power supply 24 V
C-D = not used
T
1
T
2
= defrost signal (M0)