Baxi Combi 130 HE Installation And Servicing Instructions page 46

230 V at A ?
YES
230 V at B ?
YES
Main PCB Fuse OK ?
YES
230 V at connection
marked C ?
YES
22 to 30V
at connection
marked D ?
YES
5Vdc at connection
marked E ?
YES
Replace Display PCB.
46
Supplied By www.heating spares.co Tel. 0161 620 6677
No Display
Connect Mains to Boiler.
NO
Ensure Plug is in
Socket.
NO
Check wiring from
terminal block to PCB.
Check for shorts on
NO
Pump, Diverter Valve,
Fan and Gas Valve,
then replace fuse.
NO
Replace Main PCB.
NO
Replace Transformer.
NO
Replace Main PCB.
15.0 Fault Finding
Mains Input
L
N
External Room
Filter
Timer Thermostat
Link Link
N L 1 2 3
A
B
Mains Input
Burner On
&
Fault Neons
Pump
Diverter Valve
Gas Valve
Modem PCB
Room Thermostat
Baxi
Optional
Intellistat
Pump
only
Feed
+ S -
6 7
4 5 8
Kit No 247495
C
D
Transformer
Flow &
Return
Thermistors
Overheat
Thermostats
&
Flow Switches
&
Condensate Trap
Room Control
Display PCB
Fan
E