Operation - Highflow Cdi And Fs Cdi Regular; Initialisation; Display Messages - Worcester CDi Combi N.G Service Booklet

4

OPERATION - HIGHFLOW CDi and FS CDi REGULAR

4.1

INITIALISATION

When it is switched on, the appliance performs a self-
test which takes about 10 seconds.
While the test is in progress, the display shows for the
first two seconds . Additionally buttons
light up orange and the reset button lights up red.
Afterwards the display shows the CH flow temperature.
On completion of the test sequence the appliance is
ready for operation.
4.2

Display messages

The 7-Segment-Display has following display messages
(table 2 and 3):
Displayed value Description
digit, dot Service function
followed by
letter
letter followed Error code
by digit or letter
two digits decimal value e.g. flow
temperature
U followed by decimal value;
0..9 100..109 will be displayed
as U0..U9
one digit (long decimal value (triple-
displayed) digit);
followed by two first digit will be displayed
digits twice alternating with two last
(short digits (e.g.: 1...69..69 for
displayed) 169)
two dashes code plug number;
followed by two the value is displayed in
digits twice 3 steps:
1. two dashes
2. two first digits
3. two last digits
(e.g.: -- 10 04)
two letters version number;
followed by two the value is displayed in
digits twice 3 steps:
1. two first letters
2. two first digits
3. two last digits
(e.g.: CF 10 20)
Tab. 4 Display messages
8 716 115 748 (2009/09)
Supplied By www.heating spares.co Tel. 0161 620 6677
OPERATION - HIGHFLOW CDI AND FS CDI REGULAR
Special
messages
and
Range
00..99
0..109
0..999
1000..
9999
Tab. 5 Special display messages
Description
Key acknowledgement after pressing
one button (except reset button)
Key acknowledgement after pressing
two buttons simultaneously
Key acknowledgement after
pressing button longer than 3 sec-
onds (storage function)
The display shows alternatively the
CH flow temperature and
appliance works continuously at the
minimum power (see service
function 2.F).
The display shows alternatively the
CH flow temperature and
appliance works continuously at the
maximum power (see service func-
tion 2.F).
Appliance is in Air purge mode, (see
service function 2.C)
The display shows alternatively the
CH flow temperature and
Syphon-fill programme is active. See
service function 4.F.
When the control is in internal heat
bank demand and syphon fill is not
active, then the seven segment dis-
play will alternate between the pri-
mary temperature and the tank
demand symbol
. The
. The
. The
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