LEGEND:
A -
On/Off Button
B - Domestic Hot Water Temperature Adjustment
C - Central Heating Temperature Adjustment
D - Reset Button/Flue Test analysis mode*
E - Comfort Mode Selector
F - Summer Mode LED (Green)
G -
Ignition/Overheat Lockout LED (Red)
H - Central Heating (Winter Mode) LED (Green)
I - Digital Display (Fault Code/Water Temperature)
J - Time Clock
K- Central Heating System Pressure Gauge
2.10 CONTROL PANEL
FI
G
. 2.23
F
R020A
* Warning the flue analysis mode must only be selected by a
qualified service engineer. See Section 3.4 for further
instructions
The Control Panel has a 3 digit display, during normal
operation the display will show one of six things on the
two right hand digits;
During Stand-by (no demand for Central Heating or D.H.W.)
‘
on’ will be shown on the display and no LEDs will light.
During a demand for Domestic Hot Water, the temperature of
the outgoing hot water is displayed in
o
C (e.g. 38) and the
summer mode LED will light (F - FIG. 2.23).
During a demand for Central Heating, the temperature of the
central heating flow will be displayed in
o
C (e.g. 65) and the
central heating mode LED will light (H - FIG. 2.23).
Dur
ing the oper
ation of the flue analysis mode* the
display will show ‘
sc’.
Should a fault occur the display will show the fault code
and one of two letters, for a non-volatile shutdown the
letter ‘
A’
will be shown follow
ed b
y the tw
o digit code f
or
the f
ault eg.
‘
A02’
and the red
LED (
G - FIG.
2.23
)
will
light, a non-volatile shutdown will require the reset button
(D - FIG. 2.23) to be pressed once before the boiler will
attempt to relight, should the boiler lockout again, the
assistance of an A
uthor
ised Service Engineer should be
sought.
Should the boiler develop a fault that cannot be corrected
by resetting the boiler, the letter ‘
E’ will be displayed
followed by a two digit code (e.g. E33) indicating a
v
olatile shutdown code, in the ev
ent of such a shutdo
wn,
the boiler will automatically resume oper
ation once the
cause behind it is resolv
ed.
Should it not, the assistance
of an A
uthor
ised Ser
vice Engineer w
ould be required.
A list of the fault codes can be found opposite.
2.11 DIGITIAL DISPLAY AND FAULT CODES
DISPLAY CAUSE
AA 0011
No flame after safety time (7 seconds)
AA 0033
The heating flow temperature exceeds 103
o
C
during operation
AA 7777
Condensate Trap full of water
Condensate sensor short circuited
Condensate sensor in open circuit
AA 7755
Problem with the flue stat
AA 9977
Problem with the electronic monitoring
AA 9988
Problem with the electronic monitoring
AA 9999
Problem with the electronic monitoring
EE 0022
Insufficient w
ater pressure
EE 0044
Domestic hot w
ater temper
ature probe in
open circuit
EE 0055
Domestic hot w
ater temper
ature probe
short circuited
EE 0066
Heating flo
w temper
ature probe in open
circuit
EE 0077
Heating flo
w temper
ature probe shor
t
circuited
EE 0088
Heating retur
n temper
ature probe in open
circuit
EE 0099
Heating return temperature probe shor
t
circuited
EE 2200
Flame detected with gas valve closed
EE 2211
Error in the electrical connection (live and
neutral crossed)
EE 3333
The air pressure switch is closed before the
ignition sequence has begun
EE 3344
The air pressure switch does not close
when the fan runs
EE 9999
More than 5 RESETS of the boiler
in 15 minutes.
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