1.SET indicator
9.System ON indicator
2.Time of day
10.SET positions
3.Switch Period symbol
11.PROGRAMME positions
4.SET Button
12.BOOST symbol
5.BOOST or adjust (-) button
13.ADVANCE symbol
6.ADVANCE or adjust (+) button
14.AM/PM symbol
7.ENTER Button
15.Day of week indicator
8.SELECT or COPY button
16.PROGRAMME indicator
CCEE
NNTT
AAUU
RRPP
LLUU
SS
CC11
77
UUSS
EERR
IINN
SSTT
RRUU
CCTT
IIOO
NNSS
Q
QU
UEESSTTIIO
ON
NSS A
AN
ND
D A
AN
NSSW
WEER
RSS
The unit display has become frozen
The indicator neon fails to illuminate
The indicator neon will illuminate but
the pump and/or boiler fails to
operate
There is no display on the
programmer
How do I know if the programmer is
still under warranty
How is the programmer removed from
the wall
This could be due to local electrical interference. Using the RESET procedure may rectify
the fault.
Using the RESET procedure may rectify the fault. If the problem persists the programmer
will need replacing.
This may indicate a problem elsewhere in your system;
E.g. A zone valve, etc. please contact a registered installer for advice.
Try the RESET procedure on page 2, if this fails to rectify the problem please have the
mains supply checked
The CentaurPlus range comes with a 2 year guarantee from the date of
manufacture. This date is located on the rear of the unit, indicated by a month over a
year
W
WA
AR
RN
NIIN
NG
G:: The CentaurPlus programmer must only be removed from it’s backplate by
either a qualified electrician or heating engineer; The programmer plugs in to a 6 pin
backplate located on the rear of the unit and is secured using 2 screws located on the
bottom surface of the unit. Undo these screws and pull forward and up in an arc motion
LEAFLET No P60496
ISSUE 5
FRONT VIEW OF PROGRAMMER
P
Paag
ge
e 1
1
P
Paag
ge
e 4
4
TTh
he
e ffo
ollllo
ow
wiin
ng
g aarre
e sso
om
me
e o
off tth
he
e e
eaassyy tto
o o
op
pe
erraatte
e ffe
eaattu
urre
ess::--
1
1 H
Ho
ou
urr B
Bo
oo
osstt
FFlle
exxiib
blle
e 7
7 D
Daayy CCo
on
nttrro
oll
A
Ad
dvvaan
ncce
e g
giivve
ess iin
nssttaan
ntt O
On
n/
/O
Offff o
ovve
errrriid
de
e
U
Up
p tto
o 3
3 O
On
n/
/O
Offff p
pe
erriio
od
dss p
pe
err 2
24
4 H
Ho
ou
urr o
op
pe
erraattiio
on
n..
P
Prro
og
grraam
mm
me
e o
op
pttiio
on
nss:: A
Au
utto
o /
/ A
Allll d
daayy /
/ 2
24
4 H
Ho
ou
urrss /
/ O
Offff
B
BA
ATTTTEER
RYY
The programmer is fitted with a non-rechargeable, long life battery, which will maintain the
programmed time settings for a minimum of ten months with the supply disconnected.
THIS SHOULD BE SUFFICIENT TO COVER POWER INTERRUPTIONS DURING THE LIFE OF THE UNIT.
During power interruptions the display will be blank, after 3 days the current time of day will be lost.
These measures are to prolong the battery life.
SSEER
RV
VIICCEE A
AN
ND
D R
REEP
PA
AIIR
R
This programmer is NOT user serviceable. Please do not dismantle the unit.
In the unlikely event of a fault developing please refer to the RESETTING THE PROGRAMMER section of
this user guide located on page 2. If this fails to resolve the problem please contact a local heating
engineer or a qualified electrician.
1
12
9
11
8
10
7
6
5
4
2
13
14 15
3
Horstmann Controls Limited
Bristol
BS4 1UP
Email: sales@horstmann.co.uk
Website: www.horstmann.co.uk
16
H
Ho
orrssttm
maan
nn
n CCe
en
nttaau
urrP
Pllu
uss -- SSiin
ng
glle
e CCh
haan
nn
ne
ell P
Prro
og
grraam
mm
me
errss Offer up
to three programmed operating periods per day, seven days a
week, with Hot water Boost and Heating Advance control on a
fully pumped system.
