Baxi Combi 130 HE Installation And Servicing Instructions page 57

Fan Temperature Overheat Lockout
With
power off.
YES
When fan temp ≤ 60° C
thermostat open circuit ?
(measured at
stat)
NO
YES
With power off.
Are connections J
open circuit ?
NO
Is
combustion
YES
chamber door seal
damaged or not in
place ?
NO
Replace Control PCB.
Condensate Trap Blocked
YES
Is
condensate trap
blocked ?
NO
With
power off. YES
Does connection K have
continuity to earth ?
NO
Replace Main PCB.
Supplied By www.heating spares.co Tel. 0161 620 6677
Replace Thermostat.
(black)
Wiring from Main PCB
to Thermostat faulty.
Replace combustion
chamber door seal.
Clear blockage and dry
sensors.
Wiring from main PCB
to condensate trap
faulty.
15.0 Fault Finding
Transformer
Thermistors
Mains Input
Thermostats
Burner On
&
Flow Switches
Fault Neons
Condensate Trap
Pump
Room Control
Diverter Valve
Display PCB
Gas Valve
Modem PCB
Room Thermostat
Flow &
Return
Overheat
K
&
J
&
Fan
57