56
In case of an error, or when the boiler has to display a message, the display flashes 2 digits. Please refer to the table below to
d
iagnose the default.
F
or default 01 and 03,
A a
ppears on the display, the boiler is locked and the red button lights (28). To reset the boiler press key
28.
28
Fig. 107
Overheating lock out
FAULT
19. Error Codes
C
ode
Fault description
A 01
Overheat lockout
A
03
No flame detected within allowed time
A 36
Flue pipe too high temperature
A 37
CPU fault
A
39
PCB fault 1
A 40
PCB fault 2
A 41
Fan error
E 02
No Circulation (check pump and water pressure)
E 04
No flame detection
E 05
Anti-freeze system, pump only
E 06
Anti-freeze system, pump and burner
E 07
No water circulation in primary circuit
E 08
No water in the primary circuit
E 11
Flow sensor open circuit
E 12
Flow sensor short circuit
E 13
Return sensor open circuit
E 14
Return sensor short circuit
E 15
Outdoor sensor open circuit (where fitted)
E 16
Outdoor sensor short circuit (where fitted)
E 18
Flame lift
E 20
Flame detected with gas valve off
E 22
Faulty air pressure switch
E 23
Low fan speed
E 25
Tank sensor open circuit
E 26
Tank sensor short circuit
E 27
Tank fault warning
E 29
Room sensor open circuit
E 30
Room sensor short circuit
E 33
Under floor heating thermostat open circuit
E 34
Flue pipe sensor open circuit
E 35
Flue pipe sensor short circuit
E 36
Flue pipe too high temperature
E 37
Communication problem with the main PCB
E 38
Reset pressed 5 times within 15 minutes