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Alpha CD90S/115S - Fault Finding
8
FAULT FINDING
Boiler error codes that may appear on the right hand side of the boiler display panel when a fault shuts down the boiler.
The code will be displayed with either the letter 'E' or 'b' on the left hand side.
'E' codes require a manual reset, 'b' codes will automatically reset.
Table 7
Code 'E'
E 00
E 02
E 03
E05 E06 E11
E13 E14 E15
E16 E17 E44 E60
E 04
E 07
E 12
E 18
E 19
E 24
E 25
E 26
E 28
E 29
E 30
E 31
E 32
E 33
E 36
E 37
E 38
E 52
E 65
E114
E118
FUSE
Solution
Check flame sensing electrode and wiring
Check PCB
Check gas supply
Check electrode position
Check flame sensing signal is greater than 6µA
Check gas supply
Check electrical connections
Check PCB
Check electrical connections
Check electrical connections
Check PCB fuses
Check primary flow thermostat
Check flue thermostat
Check water circulation
Check for air in the system
Check water circulation
Check for air in the system
Check water circulation
Check for air in the system
Check water circulation
Check for air in the system
Check for system leaks
Re-pressurise the system 0.75 - 1.25 bar
Check fan
Check fuse F3
Check fan
Check fuse F3
Check electrical connections
Check PCB
Check water circulation
Check for air in the system
Check NTC resistance
Check NTC resistance
Check NTC resistance
Check NTC resistance
Check NTC resistance
Check NTC resistance
Check fan
Check flue
Check air inlet pipework
Check water circulation
Check for air in the system
Check fan
Check flue
Check air inlet pipework
Check correct address setting on PCB
Check gas supply
Check gas supply pressure
Check gas supply pipework
Change fuse