Honeywell BCU 460 Technical Information page 63

Fault signalling
(display E d2, E d3, E d4, E d5, E d6, E d7 or E d8)
BCU 460, BCU 465 · Edition 11.19
Fault message (blinking)
Low air pressure
Air flow during pre-purge
Waiting for connection
Invalid address
Invalid configuration
Invalid network name
Controller in STOP position
Burner 1 flame simulation
No flame after safety time 1
Flame failure during flame proving period 1
Flame failure during burner 1 operation
DISPLAY
Description
E 2
No input signal from pressure switch or failure in air supply
to
during program step 2, 3, 4, 5, 6, 7 or 8
E 8
E P Air flow failure during pre-purge
0
BCU waiting for connection to controller
1 Invalid or incorrect address set on bus module
The bus module has received an incorrect configuration from the
2
controller
Invalid network name or no address allocated in the network
3
name
4
Controller in STOP position
E A1
Burner 1 flame simulation while air actuator is open
E A2
No flame during safety time 1 while air actuator is open
Flame failure during flame proving period 1 while air actuator is
E A3
open
E A4
Flame failure during burner 1 operation while air actuator is open
63