Defensor Defensor H15A, Service Manual

Page: 43 / 46

43
6.3 Wiring diagram PH28/PH28A
B1/B2 Ionisation electrodes
B3
Level switch
F1 Fuse control board (1.25 A, slow acting)
M1 4-step fan
M2 Drum motor
P1 Potentiometer display contrast
S1 Safety switch
S3 Micro switch carriage/blanking cover
S4 Micro switch air intake grill 1
S5 Micro switch air intake grill 2
U1 Internal humidity sensor
U2 Radio receiver (option)
U3 External radio humidity sensor (option)
T1 Transformer control board
T2 Transformer fan
X5 Error contact, max. 250 VAC
X9 Programming interface
Y1 Inlet valve (PH28A only)
Y2 Inlet safety valve (PH28A only)
PH28
X14
X15
X17
+5V 4
3
2
1
U1
P1
T1
B3
B1 B2
X5
F1
T2
M2
X9
X9
7 1
X10
2 1
1
+24V
X12
2 1
X6 X5
1 2 1 2 3
+24V
X13
5 4 3 2 1
+24V
+24V
X1
L1
L
N
PE
X3
1
2
3
5
4
X16
1
1
10
St. 1 (ws)
St. 2 (rt)
St. 3 (gu)
C2 (bn)
St. 4 (sw)
N (bl)
PE
PE
PE (gn/ge)
X4
1
2
3
5
6
4
7
8
9
10
1.25 AT
S1
C1 (ge)
P (bl)
N (sw)
PE (gn/ge)
L1 L1
L
N
PE
L
N
115 VAC
122 V
146 V
172 V
230 V
230 VAC
PE
M
Y1
Y2
Steuerprint PH27 300000642.000
Index XX
Art.Nr. XXXXXXX
U3
U2
X21
S3
X22
S4
X23
S5
Keypad&LED
Display
M