Bosch Worcester Greenstar CDi Compact ErP Series - Fault Finding and Diagnosis; Wiring, Functions, and Protection

FAULT FINDING AND DIAGNOSIS
CDi Compact
ErP
- 6 720 813 276 (2015/07) 61
8 FAULT FINDING AND DIAGNOSIS
8.1 Internal wiring diagram
113
113
113
EMS
230V
IN
230V
OUT
FR FS
LR
LR
LN
L
N
LN
LN
LN
PUMP SUPPLY
FLAME SENSE
ELECTRODE
SPARK
ELECTRODES
FLOW
NTC
MAX SAFETY NTC
DIVERTER
VALVE
DHW
NTC
RETURN
NTC
FAN
FLAME SENSE
GROUND
GAS
VALVE
SAFETY
SOLENOID
SAFETY
SOLENOID
FLOW
TURBINE
DHW INLET NTC
(PREHEAT OPTION)
PUMP CONTROL
PUMP
Purple
White
Black
Fan wiring:
Live = Brown
Neutral = Blue
Fuse, slow
EMS BUS point
HCM (at rear of PCB)
Worcester 24V controls point
F 5A H 230 V
X7 X6 X5 X3 X11 X4 X12
DIAGNOSTIC
INPUT
DHW TEMPERATURE
CONTROL
CH TEMPERATURE
CONTROL
LCD DISPLAY
Black
Blue
Red
Green
Blue
Red
Blue
Orange
Blue
Brown
Purple
Black Black
Black
Green
Yellow
Red
White
Yellow
Orange
Red
Blue
Red
Blue
Green
Black
G/Y
G/Y
G/Y
6720813276-14.1Wo
PRE WIRED LINK
*
*
Red
Orange
White
Yellow
Blue
Brown
*
Red
Blue
Orange
SPARK
GENERATOR
LN
White White
White
10
9
12
4
4
7
1
5
5
1
9
11
14
15
2
3
6
10
12
8
13
6
3
11
8
7
4
2
1
FLUE
STAT
AIR PRESSURE
SWITCH
13
15
14