Hoval RS-T Operating Instructions Manual

Room station RS-T

4 204 764 / 00 - 11/07

Operating Instructions

EN

Subject to modifications

Hoval Export

Hovalwerk AG
Austrasse 70
9490 Vaduz
Principality of Liechtenstein
Phone: [phone]
Fax: [phone]

Hoval United Kingdom

Hoval LTD
Northgate
Newark
Nottinghamshire NG24 1JN
Phone: [phone]
Fax: [phone]

2

4 204 764 / 00 - 11/07Table of contents

Heating system control ...........................................................................................................3-31

Operating and display elements

Room station RS-T .............................................................................................................................................. 3

Function of the operating elements .....................................................................................................................4

What to do if... ..................................................................................................................................................... 5

Control elements of the boiler control ...............................................................................................................6-7

Main settings

Changing the room temperature ......................................................................................................................8-9

Holiday, absent, constant reduced heating ........................................................................................................ 10

Setting the operating mode (holiday, absent, party, automatic, summer, heating, reduced, standby) ......11-13

Changing the switching times (heating times) .............................................................................................. 14-16

Copying of switching times ........................................................................................................................... 17-18

Heating curve (heating characteristic) .......................................................................................................... 19-20

Adjusting the domestic hot water

Adjusting the domestic hot water temperature .............................................................................................20-21

Manual domestic hot water reloading ................................................................................................................ 21

Domestic hot water economy temperature ...................................................................................................22-23

Further settings

Setting the clock ...........................................................................................................................................24-25

Setting the date ................................................................................................................................................. 25

Changing between summer and winter time ..................................................................................................... 25

Setting the language .........................................................................................................................................26

Reloading the standard switching times program - Deleting the own time program..................................... 27-28

Alarm messages ............................................................................................................................................... 29

System information

Information key for system temperatures and heating circuit information ......................................................... 30

Special symbols ................................................................................................................................................31

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Information for the plant user:

Room station available

x

Number of heating circuits: 1 2 3

Heating circuits Adjusted heating
curve value

Heating circuit HC = ____________ _____________

Heating circuit MC1 = ____________ _____________

Heating circuit MC2 = ____________ _____________

Switching time program P2, P3 released: yes no

Room station RS-T

The room station RS-T does not only serve for the
remote controle your heating but also at the same
time the temperature in the living room.
Settings (e.g. room temperature) can be both at the
room station RS-T and directly at the boiler control
panel.

Heating system control

Important addresses and
telephone numbers

Technical data

(To be completed by the heating installer)

Heating installer

Plumbing installer

Electrical installer

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Function of the operating elements The central rotary pushbutton and the labelled keys

are designed for easy and straightforward operati­on.

Rotary pushbutton:
Change and store
values

Basic procedure for changing settings

An example

Select the desired function

Turn the rotary pushbutton to select or change the
desired parameter (flashing word or number).

Press the Info key at any time to go back to the basic
display without storing the values set.

Press the rotary pushbutton to store the value set.
It is also possible to store the value using the se­lected function key.

Function keys

Function keys

Heating system control

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What to do if...

The following information can be used as a first level support in frequently occurring situations.

Observation

It is too cold

It is too warm

From now on, equal day and
night temperatures should be
maintained continuously

This evening, the heating should
remain on for longer

A larger amount of hot water is
required

From now on, hot water but no
heating is required

Suddenly, there is no heating or
hot water; it is cold.

The room temperature setpoint
requires frequent adjustments
because it is too cold or too hot

Today, I will be absent for sever­al hours during the day

I am travelling for a short period
of time (e.g. 3 days)

I will be travelling for an indefi­nite period of time

In summer, it is too cold or too
warm.

Remedy

Set a higher value for the room temperature with

and the

rotary pushbutton (see page 8,13).

Set a lower value for the room temperature with

and the

rotary pushbutton or set the operating mode to

ì

(page 9,13).

Set the operating mode with

� � �

to ë “HEATING”

(page 12,13).

Set the operating mode with

� � �

to

è

“PARTY” and set the

desired time (page 11).

Press for 3 seconds and set the additional loading time
(page 21).

Set operating mode with

� � �

to ê “SUMMER” (heating off, hot

water only) (page 12,13).

Check the control unit for alarm messages and consult a heating
engineer, if necessary.

Change the adjusted heating curve (page 19).

Set the operating mode with

� � �

to ç “ABSENT TIL” and set

the return time (page 10,11).

Set the operating mode with

� � �

to æ “HOLIDAY TIL” and set

the return time (page 19).

Set the operating mode with

� � �

to ì “RED. HEATING”.

When returning, set the operating mode with

� � �

to é “AUTO-

MATIC” (page 12,13).

À indicates that the summer disconnection is active.

If it is too cold, set the operating mode with

� � �

to ë “HEA-

TING” (page 12).

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1

3

4

8

5

2

7

6

Key Designation Function

1

Daytime room temperature Set the daytime room temperature. page 8

2

Reduced room temperature

Set the room temperature in the reduced heating
mode. page 9

3

DHW temperaturer

Set the domestic hot water temperature.
Manual DHW reloading. page 21

4

Rotary pushbutton

Change the values by turning. Confirm the values by
pressing. Function selection by pressing and turning.

5

Information key

• Show the operating data on the display.

•

Return to the basic display without saving the values

.

page 30

6

Heating curve set-up Set the heating curve page 19

Control elements of the boiler control

Heating system control

Key Designation Function

7

Operating mode selection key Select the operating modes

æ

Holiday

Turn off the heating system during the holidays
(Frost protection page 11

ç

Absence

Tamporarily switch off heating page 11

è

Party

Extended heating page 11

é

Automatic

Automatic heating according to the preset heating
times page 12

ê

Summer

Only DHW; Heating off page 12

ë

Heating

Continous heating mode page 12

ì

Reduced heating

Constant reduced heating mode page 12

í

Standby

System switched off ­Frost protection activated page 12

8

Display The basic display shows the day of the week, date and

time of the day, as well as the current room tempera­ture (room station).

Possible readouts:
1 Active heating time 24h
2 Weekday display
3 Display of the active operating mode and the clock

programme
4 Time of the day
5 Selected operating mode
6 Date / Day / Month / Year
7 Room temperature (when activated)

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2

1

3

4

6

7

5

Heating system control

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Main settings

Changing the room temperature
Setting the daytime room temperature

Basic display

Tap the “Daytime room temperature” key

The daytime room temperature
setpoint flashes

Set the desired room temperature by turning the “rotary pushbutton”.

- Setting range 5 - 30ºC (Factory setting 20ºC)

The new “Daytime room temperature” setpoint appears on the dis­play

Tap the “Daytime room temperature” key to confirm the temperature
setpoint

ROOM DAY

-20.0

C

ROOM DAY

-22.0

C

If “MC1” is shown on the dis­play, you need to select the
heating circuit.
(Information on which hea­ting circuit to select for your
home can be found on page
3 of these instructions).

MO. 16. AUG.'04
14:00 62.5

C

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MO. 16. AUG.'04
14:00 62.5

C

ROOM NIGHT

-20.0

C

ROOM NIGHT

-18.0

C

Basic display

Tap the “Reduced room temperature” key

The night time room temperature
setpoint flashes.

Set the desired room temperature by turning the “rotary pushbutton”.

- Setting range 5 - 30ºC (Factory setting 16ºC)

The new “Reduced room temperature” setpoint appears on the dis­play.

Tap the “Reduced room temperature” key to confirm the temperature
setpoint.

If “MC1” is shown on the dis­play, you need to select the
heating circuit.
(Information on which hea­ting circuit to select for your
home can be found on page
3 of these instructions).

Setting the reduced (night time) temperature

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Holiday, absent, constant reduced heating

Depending on the duration of your absence and what your requirements are in regard to comfort, there are
different operating modes available for interrupting or reducing the heating. In any case you will be able to
save a lot of energy and money if the rooms are not heated or less heated during your absence.
The following table is intended as a guide for finding the best operating mode for each particular case:

Application

You go on holiday for e.g. 1
week and you know the return
date.

You leave home in the morning
and come back late in the eve­ning.

You are travelling for an indefi­nite period of time and want the
living area to be at the set red­uced temperature on return.

You are away for an indefinite
period of time during spring or
autumn and you don’t mind if
your home is cool on return

Operating mode

System is off during holidays

"HOLIDAY TIL"

æ

Heating interrupted temporarily

"ABSENT TIL"

ç

Continuous reduced heating
mode

"RED. HEATING"

ì

System switched off - Frost pro­tection activated

"STANDBY"

í

Function

- Heating system OFF / Calorifier
frost protected (5ºC)

- Room temperature set to mini­mum (10ºC)

Setting range:
current date + 250 days
End of holiday =
Return date 0:00 o’clock
Early return:
“Press and hold”

� � �

for 3 sec, to

return to “AUTOMATIC” mode.

Heating temporarily interrupted
until set time.

Setting range: 0.5.....24h

Continuous reduced heating and
domestic hot water mode around
the clock

The entire heating system is swit­ched off and frost protected. No
domestic hot water mode!

See following pages for a detailed description on how to set the operating modes.

You can return to the “AUTOMATIC” function (normal heating mode) at any time by “pressing and holding”

� � �

for 3 sec.

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é

� � �

Tap the “Operating mode” key

The note “OP. MODE” is displayed for a short time.

The currently active operating mode is then shown flashing on the
display. An indicator bar at the lower part of the display points to the
corresponding symbol.

Set the desired operating mode by turning the “rotary pushbutton”:
"HOLIDAY TIL” or “ABSENT TIL” or “PARTY TIL".

The selected operating mode is shown flashing on the display.

Tap the “rotary pushbutton” to confirm the selected operating mode.

Today’s date (“HOLIDAY TIL”) or the current time (“ABSENT TIL”,
“PARTY TIL”) is shown flashing on the display.

Turn the “rotary pushbutton” and select

- for “HOLIDAY TIL”, the date of return from holiday

- for “ABSENT TIL”, the expected return time (within max. 24h).

- for “PARTY TIL”, the time the party is expected to end.

Tap the “rotary pushbutton” to confirm the setting.

Setting the operating mode

Procedure for activating the operating modes “HOLIDAY TIL”, “ABSENT TIL” or “PARTY TIL”.

OP. MODE

AUTOMATIC

HOLIDAY TIL

HOLIDAY TIL

27.08

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� � �

Procedure for activating the operating modes “AUTOMATIC”, “SUMMER 1 ” , “HEATING”, “RED. HEATING”
and “STANDBY”

Tap the key “Operating mode”

The note “OP. MODE” is displayed for a short time.

The currently active operating mode is then shown flashing on the
display.

Set the desired operating mode by turning the “rotary pushbutton”.

for example “RED. HEATING”

Tap the “rotary pushbutton” to confirm the setting.

OP. MODE

AUTOMATIC

RED. HEATING

1

The operating mode “Summer” can not be selected when each heating circuit

is set up separately.

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Operating mode Function

AUTOMATIC

é

SUMMER

ê

HEATING

ë

RED. HEATING

ì

STANDBY

í

Automatic control mode according to the heating times set in the 1. switching time
program.
Factory setting:
Heating: 06:00 - 22:00
Reduced heating: 22:00 - 06:00
Domestic hot water: 05:00 - 22:00

Only domestic hot water mode
Domestic hot water is produced at the times set in the switching time program
(for showering, etc.)

Factory setting for domestic hot water:
05:00 - 22:00
Frost protection is active

Continuous heating mode
The room temperature is not reduced during the night.
DHW is produced at the times set in the time program

Continuous reduced heating mode
The rooms are continuously heated at the “ROOM NIGHT” temperature setting.

No heating mode
Heating system is switched off
There is no heating and no domestic hot water is produced. Frost protection is
active.

Info:
Operating mode “Summer” can not be
selected if each heating circuit is set
up separately.

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Further standard programs can be - or could have been - set-up or enabled for programming by the instal­ler (P1-P3) see page 16.

A maximum of 3 heating times per day are possible, e.g.:

... pro Tag

1 Heizzyklus!

... pro Tag

2 Heizzyklen!

... pro Tag

3 Heizzyklen!

... pro Tag

1 Heizzyklus!

... pro Tag

2 Heizzyklen!

... pro Tag

3 Heizzyklen!

Changing the switching times (heating times)

In this menu the switching time programs can be set individually for the heating and domestic hot water
modes. After selecting the respective heating circuit, the factory-set standard program (P1) is loaded and
can then be edited individually.
The standard heating times preset by the manufacturer are, e.g.:

Circuit Day Heating from

All heating circuits
(HC,MC-1,MC-2)

Mo-Su 06.00 - 22.00

Domestic hot wa­ter circuit (DHW)

Mo-Su 05.00 - 22.00

Table for recording individual switching times

Switching times program for living area...............

(MC1)

Day Cycle 1 Cycle 2 Cycle 3

from to from to from to

Mo

Tu

We

Th

Fr

Sa

Su

Switching times program for living area..............

(MC2)

Day Cycle 1 Cycle 2 Cycle 3

from to from to from to

Mo

Tu

We

Th

Fr

Sa

Su

Switching times program for living area..............

(HC)

Day Cycle 1 Cycle 2 Cycle 3

from to from to from to

Mo

Tu

We

Th

Fr

Sa

Su

Switching times program for calorifier
(DHW)

Day Cycle 1 Cycle 2 Cycle 3

from to from to from to

Mo

Tu

We

Th

Fr

Sa

Su

...per day

1 heating cycle

...per day

2 heating cycles

...per day

heating cycles

Heating system control

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ИИИИИИИИИИИИИИИИИИИИ
0 2 4 6 8 10 12 14 16 18 20 22 24

06.00-22.00
MO-1-

Basic display

Press the “rotary pushbutton” for at least 3 sec.

The note “TIMEPROGRAMS” appears flashing on the display.

Tap the “rotary pushbutton” to confirm

The note “HC” also appears flashing on the display

Select the heating circuit by turning the “rotary pushbutton”.
(Information on which heating circuit to select for your home can be
found on page 3 of these instructions).

Select switching times program P1, P2 or P3, if required - page 16

Tap the “rotary pushbutton” to confirm the selected heating circuit.

Use the “rotary pushbutton” to select the day for which the heating time has to be
modified.
Note: The 3rd heating cycle is omitted if the 2nd heating cycle does not contain

any switching times.

Change - Exit:
Every flashing setting can be corrected using the rotary button, if required, and ac­cepted by tapping. Use the key to go back one step. Use the key

� � �

or wait for

approx. 60 sec. to go back to the basic display.

MO. 16. AUG.'04
14:00 62.5

C

TIMEPROGRAMS

TIMEPROGRAMS
HC

TIMEPROGRAMS
MC-1

e.g.

Heating system control

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� � �

.......

If P1 is displayed, it means that further standard heating times programs are already enabled. If not, P2 and
P3 can be enabled by the heating technician..

Circuit Day Heating from

All heating circuits
(HC,MC-1,MC-2)

Mo-Th

Fr

Sa-Su

06.00-08.00 16.00-22.00

06.00-08.00 13.00-22.00

07.00-23.00

Hot water circuit
(DHW)

Mo-Th

Fr

Sa-Su

05.00-08.00 15.30-22.00

05.00-08.00 12.30-22.00

06.00-23.00

Circuit Day Heating from

All heating circuits
(HC,MC-1,MC-2)

Mo-Fr

Sa-Su

07.00-18.00

reduced

Hot water circuit
(DHW)

Mo-Fr

Sa-Su

06.00-18.00

reduced

Factory setting:
Switching times program P2

Factory setting:
Switching times program P3

ИИИИИИИИИИИИИИИИИИИИ
0 2 4 6 8 10 12 14 16 18 20 22 24

06.00-22.00
MO-1-

ИИИИИИИИИИИИИИИИИИИИ
0 2 4 6 8 10 12 14 16 18 20 22 24

06.00-22.00
MO-1-

ИИИИИИИИИИИИИИИИИИИИ
0 2 4 6 8 10 12 14 16 18 20 22 24

06.00-22.00
SU-1-

ИИИИИИИИИИИИИИИИИИИИ
0 2 4 6 8 10 12 14 16 18 20 22 24

-.---.-­ MO-2-

Tap the “rotary pushbutton” to confirm the day.

The currently set heating start time is shown flashing on the display

Set the desired heating start time by turning the “rotary pushbutton”.

Tap the “rotary pushbutton” to confirm the set start time.
Turn the “rotary pushbutton” to set the time setpoint for the end of the
heating mode on the week day shown

The week day is shown flashing on the display. You can now set a
second heating time (Mo -2) for this day by turning the “rotary push­button”
or
by going directly to Tuesday to set the desired heating time.

Instead of introducing each day separately, you can also use the
“copy” function - see page 17
This function allows you to copy the switching times from any days
of the week to other days (Mo-Su) or to a whole week (1-7) or to
day groups like working days (1-5) or weekends (6-7).

Once you have completed all the changes, tap the operating mode
key to confirm the settings and open the basic display

Heating system control

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COPY
DAY

Basic display

Press the “rotary pushbutton” for at least 3 seconds

The note “TIMEPROGRAMS” is shown flashing on the display.

Tap the “rotary pushbutton” to confirm the selected operating mode.

The note “HC” is also shown flashing on the display.

Select the heating circuit by turning the “rotary pushbutton”.
(Information on which heating circuit to select for your home can be
found on page 3 of these instructions)

Select switching times program P1, P2 or P3, if required - page 16

Tap the “rotary pushbutton” to confirm the selected heating circuit.

The first day of the week is shown flashing on the display.

Keep turning the “rotary pushbutton”

until “COPY”, “DAY” appears flashing on the display.

MO. 16. AUG.'04
14:00 62.5

C

TIMEPROGRAMS

TIMEPROGRAMS
HC

TIMEPROGRAMS
MC-1

ИИИИИИИИИИИИИИИИИИИИ
0 2 4 6 8 10 12 14 16 18 20 22 24

06.00-22.00
MO-1-

Heating system control

e.g.

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Tap the “rotary pushbutton” to confirm the settings

Change - Exit:
Every flashing value can be corrected using the rotary button and
accepted by tapping. Use the key

to go back one step. Use the

key

� � �

or wait for approx. 60 sec. to go back to the basic display.

Select the day from which the heating time setting is to be copied by
turning the “rotary pushbutton”.
Note: The 3rd heating cycle is omitted if the 2nd heating cycle

does not contain any switching times.

Tap the “rotary pushbutton” to confirm the desired day.

Select the target day(s): Days of the week (MO...SU), whole week (1-7)
working days only (1-5), weekend only (6-7).

Tap the “rotary pushbutton” to confirm the setting.

Confirmation for correct copying of day(s).

Target range for the next copy process is shown flashing on the dis­play.

Select the next copy range by turning the “rotary pushbutton”.

Target range for the copy process is shown again flashing on the
display.
Use the same scheme to create any additional copies.

After completing all the changes, tap the operating mode key to con­firm the settings and open the basic display.

COPY
FROM MO

COPY MO
TO 1-5

COPY
DAY OK

COPY MO
TO 6-7

COPY MO
TO 50

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Heating curve (heating characteristic)

The slope of the heating characteristic curve generally describes the ratio between variations in the flow
temperature and variations in the outdoor temperature.

HEAT. CURVE
HC OFF

HEAT. CURVE
HC OFF

HEAT. CURVE
HC 1.5

Basic display

Tap the “Heating curve” key

“Heating curve” display appears.
“HC” flashes. In case of several heating circuits you must first select
the relevant circuit by turning the “rotary pushbutton”- see page 3,
Technical data.

Confirm

The slope of the heating characteristic curve is shown flashing on the
display

Select the desired value for the slope of the heating characteristic
curve by turning the “rotary pushbutton”.

The selected slope of the heating characteristic curve is shown on the
display.

Recommended settings
Floor heating: 0,3...1,0
Radiator heating: 1,2...2,0
Convector heating: 1,5...2,0

The heating curve is normally preset by the installer during the commissioning of the heating system. The
heating curve should only be changed in small steps and over longer periods of time.

Heating flow temperature

Outdoor temperature

Heating curve slope

MO. 16. AUG.'04
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HEAT. CURVE
MC 1.00

Tap to confirm

Turn the rotary pushbutton to set up further heating circuits, if requir­ed.

After completing all the changes, tap the operating mode key to con­firm the settings and open the basic display.

Adjusting the domestic hot water temperature

Basic display
Settings can be conducted at a room station, if this is available.

Tap the “Domestic hot water temperature” key

The current domestic hot water temperature setpoint is shown flashing
on the display.

MO. 16. AUG.'04
14:00 62.5

C

DHW
DAY 60.0

C

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Basic display

Press and hold the “Domestic hot water temperature” key for 3 se­conds.

The domestic hot water reloading time is displayed; the minute-dis­play flashes

Set the desired additional reloading time by turning the “rotary push­button”.
Setting range 0 - 240 min

Tap to confirm

The active reloading process is displayed until the reloading process
has been completed.

Manual domestic hot water reloading

1 TIME DHW

0.0min

Set the desired hot water temperature by turning the “rotary pushbut­ton”.

- Setting range 10 - 65ºC (Factory setting 60ºC)

The selected hot water temperature is shown flashing on the display.

Tap the “Domestic hot water temperature” key to confirm the tempe­rature setpoint.

Outside the time periods during which the domestic hot water mode is available, the calorifier can be manu­ally reloaded within the selected setting range.
The calorifier is reloaded once according to the set daytime domestic hot water temperature. Reloading is
limited by the set temperature for all other settings.

1 TIME DHW
14:16 63.0

C

MO. 16. AUG.'04
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C

DHW
DAY 63.0

C

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Basic display

Press and hold the “rotary pushbutton” for 3 seconds

“TIMEPROGRAMS” is shown flashing on the display.

Turn the “rotary pushbutton”

until “DHW” is shown flashing on the display

Tap to confirm

“DHW” flashes on the display.
The temperature shown defines the desired domestic hot water tem­perature outside the time periods during which the domestic hot wa­ter mode is available.

Tap to confirm

The night-time domestic hot water temperature flashes

Domestic hot water economy temperature (reduced temperature)

TIMEPROGRAMS

DHW
DHW

DHW
NIGHT 40.0°

DHW
NIGHT 40.0°

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Set the desired temperature value by turning the “rotary pushbutton”
and tap to confirm the setting.

After completing all the changes, tap the operating mode key to con­firm the settings and open the basic display.

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Basic display

Press and hold the “rotary pushbutton” for 3 seconds

“TIMEPROGRAMS” is shown flashing on the display.

Turn the “rotary pushbutton”

until “Time-date” is shown flashing on the display.

Tap to confirm

“Time” flashes

Tap to confirm

The “time” flashes

Further settings
Setting the clock

TIME
14:00

TIME
14:00

MO. 16. AUG.'04
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TIMEPROGRAMS

TIME-DATE

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Turn the “rotary pushbutton” to set the desired time and tap to con­firm.
Turn the “rotary pushbutton” for further adjustments.

“Year” is shown flashing - confirm
Turn to change the year setting - confirm

“Day...Month” is shown flashing - confirm
Turn to change the Day...Month setting - confirm

“Change” is shown flashing - confirm
Turn to change SU-WI ON or OFF - confirm

After completing all the changes, tap the operating mode key to con­firm the settings and open the basic display.

Setting the date

YEAR
2004

DAY.. .......MONTH

Mo 27.09

CHANGE
SU-WI ON

Changing between summer and winter time

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You will be prompted for the desired language when switching on the
control system for the first time. Changing the language is also possi­ble during normal operation.

Basic display

Press and hold the “rotary pushbutton” for 3 seconds.

“TIMEPROGRAMS” is shown flashing on the display.

Turn the “rotary pushbutton”

until “System” is shown on the display

Tap to confirm

“Language” appears on the display. Abbreviations for the language
are shown flashing D = German / GB = English
F = French / I = Italian.

Turn to select the desired language and tap to confirm.

After completing all the changes, tap the operating mode key to con­firm the settings and to open the basic display.

LANGUAGE
SYST. D

Setting the language

MO. 16. AUG.'04
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TIMEPROGRAMS

SYSTEM
SYST

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Reloading the standard switching time program - Deleting the own time program

With this function you can reload all the factory settings.

Basic display

Press and hold the “rotary pushbutton” for 3 seconds

“TIMEPROGRAMS” is shown flashing on the display.

Tap to confirm

The note “HC” is also shown flashing on the display.

Keep turning until “Default-time” appears

“Default-time” is shown flashing on the display.

Tap to confirm

The note “HC” appears on the display
Select the desired heating circuit by turning the “rotary pushbutton”

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TIMEPROGRAMS

TIMEPROGRAMS
HC

DEFAULT-TIME

DEFAULT-TIME
HC

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RESET
HC

RESET
OK

Tap to confirm

“Reset / HC” appears on the display

Press and hold the “rotary pushbutton” for 3 seconds

“Reset” OK is displayed to confirm

After completing all the changes, tap the operating mode key to con­firm the settings and open the basic display.

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FLOW
ERROR 12-0

HEAT GENER.
ERROR 30-2

DHW
ERROR 50-2

BUS
ERROR 70-1

Alarm messages

Example for sensor alarm messages
(short circuit or interruption)
Error code 10-20

Example for heat generator alarm messages
(switching status)
Error code 30-40

Example for logical alarm messages
(control functions)
Error code 50-60

Example for data bus alarm messages
(address errors on data bus)
Error code 70

The controller comprises a comprehensive alarm logic which displays the fault
type by means of the corresponding error code.

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System information
Information key for system temperatures and heating circuit information

OPER. HOURS
0h ST-1

STARTS
0 ST-1

FLOW

DHW

HEAT GENER.

OUTSIDE

Heat generator
Hours of operation
(stage 1)

Heat generator
Starts (stage 1)

Flow temperature

Domestic hot water
temperature

Heat generator
temperature

Outdoor temperature

Actual values



All temperature values shown represent the current values. Press and hold the “rotary pushbutton” to display
the individual setpoints.

only for 2-stage operation:

- Heat generation
Hours of operation (stage 2)

- Heat generation
Starts (stage 2)

only in conjunction with room sensor:

- Room temperature direct HC

- Room temperature MC 1

- Room temperature MC 2

In certain cases addi­tional information can
be displayed.

Back to the basic dis­play: Briefly press

turn to left turn to right

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Special symbols

Ice crystal symbol:
Frost protection activated

Umbrella symbol:
Summer disconnection active
(heating switched off, domestic hot water according to program).

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À

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Á

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Hoval LTD
Northgate
Newark
Nottinghamshire NG24 1JN
Phone: [phone]
Fax: [phone]

Carival SA
F-91743 Massy Cedex
2 route de la Bonde
Tél. [phone]
Fax [phone]

Hoval Gesellschaft mbH
A-4614 Marchtrenk
Hovalstrasse 11
Telefon 07243 / 550-400
Telefax 07243 / 550-17

Carival S.r.l.
Via Per Azzano S. Paolo, 26/28
I-24050 Grassobbio (BG)
Tel.: [phone]
Fax: [phone]

Germany

Switzerland

Austria

Italy

France

Hoval (Deutschland) GmbH
Karl-Hammerschmidt Strasse 45
D-85609 Aschheim-Dornach
Telefon 089 / 92 20 97-0
Telefax 089 / 92 20 97-77

Hoval Herzog AG
General-Wille-Strasse 201
CH-8706 Feldmeilen
Telefon 044 / 925 61 11
Telefax 044 / 923 11 39

United Kingdom

Responsibility for energy and the environment