Fault Finding - Baxi Combi 130 HE Installation And Servicing Instructions

Before performing fault finding carry out preliminary
electrical checks for earth, continuity and polarity.
See Section 8.13
Display On ?
YES
Display Showing 00 ?
NO
Display Showing OF ?
NO
Display Flashing L0 ?
NO
Display Flashing Ld ?
NO
Display Flashing L4 ?
NO
Display
flashing L5 or
CH works but DHW
does not ?
NO
Display Flashing L9 ?
NO
Display Flashing
L7 or L8 ?
NO
Supplied By www.heating spares.co Tel. 0161 620 6677
Go to No Display
NO
section of the fault
finding instructions.
Boiler switched off.
Press On/Off/Reset
YES
button to switch on.
Still 00
Switch power off for 10
seconds.
Central Heating switched
YES
off. Press central heating
button to switch on.
Go to Ignition Lockout
YES
section of the fault
finding instructions.
Go to Flow Temp Overheat
YES
Lockout section of the fault
finding instructions.
Go to Intellistat Fault
YES
section of the fault
finding instructions.
Go to Diverter Valve
YES
Fault section of the fault
finding instructions.
Go to Fan Fault
YES
section of the fault
finding instructions.
YES
Go to Dry Fire Fault
section of the fault
finding instructions.

15.0 Fault Finding

NOTE: The information shown on the display is
explained on the label on the inside of the outer
case (see Fig. 17).
YES
Display Flashing L2 ?
NO
YES
Display Flashing L3 ?
NO
YES
Display Flashing Lh ?
NO
YES
Display Flashing L6 ?
NO
YES
Display Flashing Lt ?
NO
YES
Display Flashing LE ?
NO
YES
Display Flashing LF ?
NO
DHW works
YES
but Central Heating
does not ?
Go to Thermistor Fault
(Flow) section of the
fault finding instructions.
Go to Thermistor Fault
(Return) section of the
fault finding instructions.
Replace Display PCB.
Go to Pump Fault
section of the fault
finding instructions.
Go to DHW Flow
Switch section of the
fault finding instructions.
Go to Fan Overheat
Thermostat Fault
section of the fault
finding instructions.
Go to Condensate
Trap section of the fault
finding instructions.
Go to External Controls
Fault section of the fault
finding instructions.
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