Refer to Section “Illustrated Wiring Diagram” for position of terminals and components
Central Heating -
Follow operational sequence
Turn selector switch to
The display illuminates
Error 20, 2
8
or
5
0 flashing
Error
11
9 flashing
Burner lights
Error
11
0 flashing
Error
1
30 flashing
Error
1
33 flashing
Turn
C
entral Heating
thermostat to Maximum.
P
ump runs
Fan runs
Spar
k
at ignition electrodes
for up to
5
seconds and for
3 attempts
3-way valve is open to
C
entral Heating circuit
Go to section A
Go to section E
Ensure all controls and
integral cloc
k
are calling
for heat
Go to section J
Go to section B
Error
1
60 flashing
Go to section D
Error
1
33 flashing
Burner does not stay
alights after
5
seconds
Error
1
33 flashing
Go to section H
Operation sequence
successful
If the error
11
0 is still
flashing. Go to section I
Fan runs at correct speed
Y
ES
Y
ES
NO
NO
NO
Y
ES
Y
ES
Y
ES
Y
ES
Y
ES
Y
ES
Y
ES
Y
ES
NO
Y
ES
Y
ES
Y
ES
Y
ES
NO
NO
NO
NO
NO
Burner output modulates to
maintain the temperature
set
Burner goes out
Go to section
C
Ensure controls are set to
demand and verify the
contacts are closed
Error
1
60 flashing
Go to section K
Y
ES
Go to section G
Turn the selector switch to
reset
Go to section F
Error
1
30 flashing
Go to section
L
Y
ES
C
hec
k
the
C
entral Heating
NT
C
sensor
Go to section E
Fan stops after
1
0
seconds
P
ump continues to run for
3 minutes
(room thermostat open)
NO
NO
Y
ES
NO
Y
ES
Y
ES
Turn the selector switch to
reset position for
5
seconds
Error
1
2
5
or
1
93 flashing
Ensure that primary
circulation is OK & that
there is no bloc
k
age
Y
ES
NO
4
8
© Baxi Heating UK Ltd 2015