Bosch CRC200 Installation Instructions For Contractors

Installation instructions for contractors

CRC200

6 720 811 153-00.1O

Comfort Room Controller

6 720 821 651 (2017/05)

6 720 821 651 (2017/05) CRC200

2 | Contents

Contents

1 Explanation of symbols and safety instructions . . . . 3

1.1 Guideline to symbols . . . . . . . . . . . . . . . . . . . . . . . . 3

1.2 Safety instructions . . . . . . . . . . . . . . . . . . . . . . . . . 3

2 Product Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

2.1 Product Information . . . . . . . . . . . . . . . . . . . . . . . . 4

2.1.1Control types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

2.1.2Possible applications in different heating systems 5

2.2 Important instructions for use . . . . . . . . . . . . . . . . 6

2.3 Scope of delivery . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

2.4 Technical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

2.5 Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

2.6 Applicability of the technical documentation . . . . 7

3 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

3.1 Installation location . . . . . . . . . . . . . . . . . . . . . . . . . 7

3.2 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

3.3 Power connection . . . . . . . . . . . . . . . . . . . . . . . . . . 9

3.4 Attaching or removing the user interface . . . . . . 10

4 Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

5 Commissioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

5.1 Basic settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

5.2 Checklist: Important settings for commissioning 14

6 Switching off power . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

7 Main menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

8 Service menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

8.1 System data menu . . . . . . . . . . . . . . . . . . . . . . . . . 17

8.2 Heating zone menu . . . . . . . . . . . . . . . . . . . . . . . . 19

8.3 Function test menu . . . . . . . . . . . . . . . . . . . . . . . . 23

8.4 Info menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

8.5 Maintenance menu . . . . . . . . . . . . . . . . . . . . . . . . 25

8.6 System info menu . . . . . . . . . . . . . . . . . . . . . . . . . 25

9 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

10 Environmental protection/disposal . . . . . . . . . . . . . . 28

11 Setup log (Service menu/contractor) . . . . . . . . . . . . 29

Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

6 720 821 651 (2017/05)CRC200

Explanation of symbols and safety instructions | 3

1 Explanation of symbols and safety

instructions

1.1 Guideline to symbols

Warnings

The following keywords are defined and can be used in this
document:

• DANGER indicates a hazardous situation which, if not
avoided, will result in death or serious injury.

• WARNING indicates a hazardous situation which, if not
avoided, could result in death or serious injury.

• CAUTION indicates a hazardous situation which, if not
avoided, could result in minor to moderate injury.

• NOTICE is used to address practices not related to
personal injury.

Important information

Additional symbols

1.2 Safety instructions

These installation instructions are
intended for competent persons who
are skilled in dealing with water
installations, heating and electrical
systems.

▶ Read the installation instructions

(heat sources, modules, etc.) before
starting the installation.

▶ Observe safety instructions and

warnings.

▶ Observe national and regional

regulations, technical rules and
guidelines.

▶ Document all work performed.

Designated use

▶ Use the product only to control

heating systems in single- or multi­family dwellings.

Any other use is considered improper.
Any resulting damage is excluded from
the manufacturer's warranty.

Installation, commissioning and
maintenance

Installation, commissioning and
maintenance may be performed only by
a licensed contractor.

▶ Never install the product in wet areas.
▶ Install only genuine spare parts.

Electrical work

Electrical work may be carried out only
by qualified electricians.

▶ Before starting electrical work:

Warnings in this document are identified by
a warning triangle printed against a grey
background.
Keywords at the start of a warning indicate
the type and seriousness of the ensuing risk
if measures to prevent the risk are not taken.

This symbol indicates important information
where there is no risk to people or property.

Symbol Function

▶ Sequence of steps
 Cross-reference to other points in this

document or to other documents

• Listing/list entry
– Listing/list entry (2nd level)

Outdoor temperature dependent function
Flashing display (e. g. flashing 1)

Table 1 Additional symbols

6 720 811 156-11.1O

HC assignment

HC assignment

6 720 821 651 (2017/05) CRC200

4 | Product Description

– Isolate all poles and secure against

unintentional reconnection.

– Ensure the system has been

disconnected from the power
supply.

▶ Never connect the product to line

voltage.

▶ Also observe the connection

diagrams for other system
components.

Handing over to the operator

Installing contractor - Please train the
end user in proper use of this product.

▶ Explain operation – especially all

safety-related actions.

▶ Point out that conversion or repair

may be carried out only by a licensed
contractor.

▶ Provide a copy of these installation

and operating instructions to the end
user for future reference.

Risk of damage from frost

The system can freeze if it is switched
off:

▶ Observe the instructions for frost

protection.

▶ Always leave the system switched on

for additional functions, e. g. water
heating or anti-seize protection.

▶ Immediately correct any faults that

occur.

2 Product Description

2.1 Product Information

• The user interface is used to control a heating zone and a
DHW tank charging circuit for water heating directly at the
heat source.

• The user interface incorporates a time program:
– Preset for the heating zone, but freely adjustable with 6

switching times per day

– Water heating may be controlled with or without time

program.

• The user interface displays information about the heat
source and heating system and is used to change the
settings.

• Installation options: On the wall with a BUS connection to a
heat source or CZM100 module with an EMS-BUS Interface
(Energy Management System).

• After operating for 1½ hours, the user interface has a
power reserve of at least four hours. If the power failure
lasts longer than the power reserve, the time and date will
be deleted. All other settings are retained.

• The functional scope and thus the menu structure of the
user interface are determined by the structure of the
system. Your attention is drawn to the importance of the
system structure at the relevant places in these
instructions. The control ranges and factory settings may
differ from the information in these instructions.

2.1.1 Control types

The following control options are available:

Outdoor reset operation ( ):

• simple outdoor reset control

• optimized outdoor reset control.

This operation requires additional optional outdoor sensor
accessory

Room temperature-dependent operations:

• supply temperature control

• power output control

The supply temperature is adjusted using the heating curve in
outdoor reset controls ( ) (with or without room

Functions that are relevant only in conjunction
with the outdoor temperature are identified by
a corresponding symbol ( ).

There are boilers that have integrated outdoor
reset controls. In such boilers, the outdoor
reset control must be deactivated.

6 720 821 651 (2017/05)CRC200

Product Description | 5

temperature influence). Simple and optimized variants are
available.
In the simple outdoor reset control ( ) the heating curve is
a straight line.
In the optimized outdoor reset control ( ) the heating
curve is an actual curve. The relationship between the outdoor
temperature and the supply temperature is therefore very
precise.

Supply temperature control and output control are available for
room temperature-dependent control.
With supply temperature control, the CRC200 reacts to a
difference between the current and the required room
temperature by changing the supply temperature. This method
of control is suitable for apartments and residential houses.
With power output control, which is possible only in systems
with one heating zone and no CZM100, the CRC200 reacts to a
difference between the current and the required room
temperature by changing the heat output of the heat source.
There are fewer burner starts and shorter pump runtimes. This
saves energy and enhances the boiler’s and the pump’s
lifetime.

2.1.2 Possible applications in different heating systems

Heating system with one CRC200

Fig. 1 Example of a heating system with one heating zone

HC 1 and a CRC200 as controller (single-family
home)

The CRC200 serves as the controller for heating systems with
one heating zone and water heating ( Fig. 1). The user
interface is installed in a suitable living space.

Heating systems with several CRC200

Fig. 2 Example of a heating system with three heating

zones with one CZM100 and one CRC200 per zone
as the controller.

Usually, in heating systems with several heating zones, each
zone is individually controlled by a CRC200 ( Fig. 2). In this
case, the following applies:

Each CRC200 controls its heating zone independently. In other
words, the CRC200 controls the assigned heating zone
completely (e. g. HC 3,  Fig. 2) in terms of room
temperature, time program, vacation program and immediate
tank charging. In addition to the automatic mode, manual
operation is also possible.

Central settings are adopted from the CRC200 in the first
heating zone. This includes parameterization of water heating
and the low loss header / header sensor. This means that water
heating settings for the storage tank temperature and thermal
disinfection are made in heating zone 1 on the CRC200. On the
CRC200 for heating zones 2 ... 8, it is possible to set one
operating mode for water heating. The heat source selects the
highest value from the set point values received. In addition,
manual override for tank charging is possible. When the system
is operating, all requests from the individual CRC200 are
processed, i. e. each request for hot water is implemented. If
the vacation program is active in the CRC200 for heating
zone 1, only the assigned first heating zone and the hot water
set point in the CRC200 for heating zone 1 are affected. Water
heating is still based on the set point values in the CRC200 for
heating zones 2 ... 8. This ensures on-demand heating and
availability of hot water for each heating zone based on the
settings in each individual CRC200.

HC 1

CRC200

HC 1

6 720 811 153-03.1O

CRC200

HC 2

HC 3

HC 1

6 720 811 156-01.1O

CZM100

CRC200

CRC200

6 720 821 651 (2017/05) CRC200

6 | Product Description

2.2 Important instructions for use

• The user interface may be connected only to heat sources
with Bosch EMS-BUS or CZM100 for multi-zone
applications.

• This user interface is intended only for wall-mounted
installation ( Chapter 3, starting at page 7).

2.3 Scope of delivery

Fig. 3 Scope of delivery

[1] User interface
[2] Technical documentation
[3] Screws and anchors

WARNING: Risk of scalding!
▶ If hot water temperatures are set above

140 °F (60 °C) or thermal disinfection is
switched on, a mixer must be installed.

NOTICE: Risk of damage to the floor!
▶ Radiant floor heating must be installed

only as a heating zone with mixer and an
additional temperature switch to protect
the floor from overheating, by delivering
too hot supply water.

6 720 811 156-02.1O

B
U
S

B
U
S

i

i

1

2

3

6 720 821 651 (2017/05)CRC200

Installation | 7

2.4 Technical Data

Fig. 4 Dimensions

2.5 Accessories

Function modules of the EMS control system:

• CZM100: Zone module for up to three heating zones

• Outdoor temperature sensor for outdoor reset control

types or WWSD (Warm Weather Shut Down) and frost
protection.

Only compatible with the following products:

• CRC100 and CZM100

Applicability of these instructions to EMS-capable modules

These instructions also apply to the user interface when used in
conjunction with CZM100 (accessory).

2.6 Applicability of the technical documentation

All information related to BUS systems and heating controllers
contained in the technical documentation of e.g. heat sources
applies also to the present user interface.

3 Installation

The detailed system schematics for mounting the hydraulic
assemblies and the associated control devices can be found in
the installation manual of CZM100.

3.1 Installation location

The room in your home where the controller is installed is the
reference room. If room temperature-dependent control is
active, the room temperature in this room serves as the
reference variable for the entire system. If the outdoor reset
control is enabled to factor in the room temperature, the room
temperature functions as an additional reference variable.

The control quality depends on the installation location.

6 720 811 153-08.1O

3 3/4"

95 mm

3 3/4"

95 mm

63/64"

25 mm

1 5/16"
33 mm

Dimensions (W × H × D) 3 3/4" × 3 3/4" × 1 5/16"

(95 × 95 × 33 mm)
( Fig. 4)

Rated voltage 8 ... 16 V DC
Nominal current 6 mA
BUS interface EMS (2-wire BUS)
Control range 41 ... 86 °F (5 ... 30 °C)
Permissible ambient

temperature

32 ... 122 °F (0 ... 50 °C)

Protection class III
Protection IP20

Table 2 Technical Data

DANGER: Risk of electric shock!
▶ Before installing this product:

Disconnect the heat source and all other
BUS users from the line voltage across all
poles.

This user interface is intended only for wall­mounted installation. Do not install in the heat
source.

6 720 821 651 (2017/05) CRC200

8 | Installation

• The installation location (= reference room) must be
suitable for controlling the zone ( Fig. 5, Page 8).

• The user interface must be installed on an interior wall.

• Do not place obstructions within 2 1/2' (0.75 m) below
CRC200.

Fig. 5 Installation location in the reference room

If there is no suitable reference room, we
recommend changing the settings to a purely
outdoor temperature dependent control.

6 720 811 153-03.1O

≥ 4'

(≥ 1.2 m)

2'

(0.6 m)

≥ 3 1/4'
(≥ 1 m)

2 1/2'

(≥ 0.75 m)

6 720 821 651 (2017/05)CRC200

Installation | 9

3.2 Installation

Fig. 6 Mounting the base

3.3 Power connection

Power is supplied to the user interface via EMS BUS.

Connections are not polarity specific.

Maximum total length of the BUS connections with AWG18
(0.75 mm

2

): 492 ft. (150 m)

▶ If several BUS users are installed, maintain a minimum

clearance of 4" (100 mm) between the individual BUS
users.

▶ If several BUS users are installed, connect the BUS users in

series or in a star pattern.

▶ To avoid inductive interference: Make sure all low-voltage

cables are routed separately from line voltage cables (min.
clearance 4" / 100 mm).

▶ In the case of outside inductive effects, use shielded cable

and ground one end of the shield. Do not connect the shield
to the connecting terminal for the ground conductor in the
module; use the building ground instead, e.g. unused
grounded terminal or water pipe.

▶ Establish a BUS connection to the heat source.

Fig. 7 Connection of the user interface to a heat source

1) Terminal identification:
On heat sources with an EMS BUS system terminals
are: BUS or BB

The outdoor temperature sensor (accessory) needs to be
connected to the heat source.

▶ Observe the instructions for the heat source when

connecting the electrical supply.

When sensor leads are extended, apply the following lead
cross-sections:

• Up to 66 ft. (20 m) with AWG18 (0.75 mm

2

)

• 66 ft. (20 m) to 330 ft. (100 m) with AWG16 (1.50 mm

2

).

The installation surface on the wall must be flat.
▶ Install the base on a wall. ( Fig. 6).

If the maximum total length of the BUS
connections between all BUS users is
exceeded or the BUS system has a ring
structure, commissioning of the system is not
possible.

6 720 811 156-05.1O

18-2 AWG (2x 1mm²)

1/4"
(6.35 mm)

1/4"
(6.35 mm)

9/64"
(3.5 mm)

CRC200

6 720 811 156-06.1O

BUS/

BB

1)

B
U
S

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10 | Installation

3.4 Attaching or removing the user interface

Attaching the user interface

1. Attach the user interface at the top.

2. Snap the bottom of the user interface into the base.

Fig. 8 Attaching the user interface

Removing the user interface

1. Push the knob on the underside of the base.

2. Pull the bottom of the user interface forwards.

3. Remove the user interface by lifting upward.

Fig. 9 Removing the user interface

6 720 809 984-06.1O

1.

1.

2.

6 720 809 984-07.1O

3.

1.

2.

6 720 821 651 (2017/05)CRC200

Controls | 11

4 Controls

Fig. 10 Controls

Item Element Designation Explanation

1 Dial ▶ Turn to change a setting value (e. g. temperature), or select from among the menus or

menu items.

▶ Press to open a menu or menu item, confirm a set value (e. g. temperature) or a

message.

2 auto button ▶ Press to activate the automatic mode with the time program.

3 man button ▶ Press to activate hold mode (manual operation) for a permanent room temperature set

point.

4 Back button ▶ Press to return to the higher menu level or discard a changed value.

▶ Hold down to switch from a menu to the standard display.

5 menu button ▶ Press to open the main menu.

▶ Hold down to open the service menu.

Table 3 Controls

6 720 809 984-40.1O

2

3

5

4

1

auto

man

menu

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12 | Commissioning

5 Commissioning

▶ First make all electrical connections and then carry out the

commissioning.

▶ Observe the installation instruction for all components and

assemblies in the system.

▶ Switch on the power supply only after all modules are

coded.

▶ Set the heat source to the maximum supply temperature

and DHW temperature needed and activate the automatic
mode.

▶ Switch on the system.

Commission the user interface as shown in Table 4.

The date, time and commissioning date are still present in the
user interface when commissioning after a reset.

You can find an overview of all settings in Chapter 7, starting at
page 15.

5.1 Basic settings

During the initial commissioning: Fill out the
commissioning report in the operating
instructions and in Chapter 11, Page 29.

Basic settings

Once the user interface is connected to the power supply, the language selection appears on
the display. The current setting starts to flash.

▶ Turn the dial to set the language and then press the dial.

The display switches to the date setting. The current setting starts to flash. The user interface
may obtain the current date automatically via the BUS system.

▶ Turn the dial to set the date and then press the dial. The format for displaying the date can

be changed ( operating instructions).

The display switches to the time setting. The current setting starts to flash. The user interface
may obtain the current time automatically via the BUS system.

▶ Turn the dial to set the time and then press the dial. The format for displaying the time can

be changed ( operating instructions).

The display switches to the heating zone assignment. The current setting starts to flash.

▶ Press the dial in order to confirm the setting.

-or-

▶ If several CRC200 are installed in the system:Turn the dial to assign one of the heating

zones 2 to 8 and then press the dial.

The display switches to automatic configuration. The current setting starts to flash.

▶ Turn the dial to select YES and then press the dial.

Automatic configuration starts to detect the connected modules and temperature sensors.
During automatic configuration the Auto-Config. display flashes

Without automatic configuration following menu items have to be configured additionally:

Pump conn. (only heating zone 1), Control type, Ext.RoomSens. and Solar module

Table 4 Basic settings

6 720 811 156-22.1O

english

english

6 720 811 156-21.1O

07/20/2014

07/20/2014

6 720 811 156-20.2O

Time of Day

Time of Day

6 720 811 156-11.1O

HC assignment

HC assignment

6 720 811 156-12.1O

Auto-Config.

Auto-Config.

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Commissioning | 13

Following automatic configuration, the display switches to guided system configuration. Which settings are available during
guided system configuration depends on the installed system.

While in guided system configuration you can press the Back button to switch to the previous menu item.
A flashing display means you should turn the dial to change the setting or press the dial to confirm the shown setting.

Available only on the user interface for heating zone 1 (not visible when a combi boiler is used).
DHW appears on the display. You can set wether a hot water system is installed or how it is
installed. For further details see table 5.

▶ If the display is not flashing, press the dial.
▶ Turn the dial to change the setting.
▶ Press the dial to switch to the next setting.

Available only on the user interface for heating zone 1.
LLH Sensor appears on the display. You can set wether a low loss header is installed and where
its temperature sensor is connected. For further details see table 5.

▶ Press the dial to make the flashing default setting appear.
▶ Turn the dial to change the setting.
▶ Press the dial to switch to the next setting.

Available only on the user interface for heating zone 1.
Recirculation appears on the display. You can set wether a recirculation pump is installed. For
further details see table 5.

▶ Press the dial.
▶ Turn the dial to change the setting.
▶ Press the dial to switch to the next setting.

Heat. System appears on the display. You can set wether high temperature or low temperature
heat radiation applies. For further details see table 5.

▶ Press the dial to make the flashing default setting appear.
▶ Turn the dial to change the setting.
▶ Press the dial to switch to the next setting.

Max. Suppl.T. appears on sthe display. You can set the maximum supply temperature. For
further details see table 9.

▶ Press the dial.
▶ Turn the dial to change the temperature.
▶ Press the dial to switch to the next setting.

Frost protect appears on the display. You can set wether frost protection depends on room
temperature or outdoor temperature. Outdoor temperature sensor must be installed for
outdoor dependent frost protection. For further details see table 9.

▶ Press the dial to make the flashing default setting appear.
▶ Turn the dial to change the setting.
▶ Press the dial to switch to the next setting.

Basic settings

Table 4 Basic settings

6 720 811 156-30.1O

DHW

DHW

6 720 811 156-31.1O

No

No

6 720 811 156-32.1O

Recirculation

Recirculation

6 720 811 156-33.1O

High Temp

High Temp

6 720 811 156-34.1O

Max. Suppl. T.

Max. Suppl. T.

6 720 811 156-35.2O

by Room Temp.

by Room Temp.

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14 | Switching off power

5.2 Checklist: Important settings for
commissioning

Always perform commissioning so that the system operates as
needed. Based on experience, the following settings are very
important to satisfy the system user:

• Control type: outdoor reset ( ) with or without the

influence of the room temperature, or room temperature­dependent

• Heating curve ( ): Adapted with reference to the

design temperature, minimum outdoor temperature and
other settings

• DHW priority: A heat demand for hot water has priority or

hot water and heating have the same priority (if possible
hydraulically)

• Time program: Determines when heating is active, see

user manual for details.

How to change settings in the service menu is described in
Chapter 8. Alternatively see the user manuals.

6 Switching off power

The user interface is powered via the BUS system and is always
on. The system is switched off only for maintenance work,
for example.

▶ Disconnect power from the entire system and all BUS

users.

Available only when outdoor sensor is connected and Frost protect is set to by Outdoor Temp
or Room - Outside.
Frost thresh. appears on the display. You can set the threshold outdoor temperatur for frost
protection. For further details see table 9.

▶ Press the dial.
▶ Turn the dial to change the temperature.
▶ Press the dial to switch to the next setting.

Heating Start appears on the display.
▶ Press the dial.
▶ Turn the dial to select YES and press the dial.

Configuration has been completed. The installation date of the CRC200 is set
automatically.

-or-

▶ Turn the dial to select NO and press the dial.

The system configuration continues.

Upon selecting YES the CRC200 is configured as a controller. The heating system and possibly water heating are operating.
Following configuration, only the menu items relevant for the configured system are displayed.

Basic settings

Table 4 Basic settings

6 720 811 156-36.1O

Frost thresh.

Frost thresh.

6 720 811 156-14.1O

Heating start

Heating start

The installation date of the CRC200 is set
automatically when the configuration is
confirmed initially by starting the heating
system.

After a prolonged power failure or extended
period of idleness, the date and time may need
to be reset. All other settings are retained
permanently.

6 720 821 651 (2017/05)CRC200

Main menu | 15

7 Main menu

▶ If the standard display is active, press the menu button

briefly to open or close the main menu.

▶ Turn the dial to select a menu item or change the value of a

setting.

▶ Press the dial to open the selected menu item, activate the

input field for a setting or confirm a setting.

Fig. 11 Main menu summary

1) Set language.

2) Available only on the user interface for heating zone 1.

3) Service menu ( Chapter 8)

Further information on operation/navigation in
the main menu can be found in the operating
instructions.

Main Menu

Heating Holiday Settings

Temperatures Holiday Prog. deutsch

1)

Heating Info Time/Date

Setback Heating Time of Day

Time program Outdoor Temp. Date

Reset Sched. Operat. stats Time correc.

Summer/Winter Room Temp. Format

Temp.thresh. DHW Date format

DHW Operat. stats Time Format

Tank loading Set temp. Temp. Format

Mode Actual Temp. Sensor calib.

Recirculation

2)

Contrast

Disinfection

2)

Service

3)

6 720 821 651-17.1O

6 720 821 651 (2017/05) CRC200

16 | Service menu

8 Service menu

▶ If the standard display is active, press and hold the menu

button for about three seconds until the service menu
appears in the main menu.

▶ Press the dial to open the already highlighted service

menu .

▶ Turn the dial to select a menu item or change the value of a

setting.

▶ Press the dial to open the selected menu item, activate the

input field for a setting or confirm a setting.

Fig. 12 Overview of the service menu

1) Available only on the user interface for heating zone 1.

2) Available if supported by heat source.

Main Menu PID charact. Room Temp.

Service Opt. pump run DHW Operation

System Data Room influence Set DHW Temp

HC assignment Contin. heat

DHW Temp.

Auto-Config. Frost protect Maintenance

Pump conn.

1)

Frost thresh. Maint.message

1)

Heat. System DHW Priority Maint. date

1)

Control type Function Test Reset Maint.

1)

Ext.RoomSens. Activation Current Fault

DHW

2)

System pump Fault History

LLH Sensor

1)

HC Pump Clear Fault

Recirculation

1)

Info System info

Solar module Outdoor Temp. Install.date

WWSD

1)

Appl. oper. Control unit

Min.outs.temp Appl.set sply Control SW

Damping Appl.act.sply SW controller

Building Type

Appl.max.sply HC Module SW

Reset All LLH Temp.

Heating circ. HC Operation

Design Temp. HC set.sply

Base line HC act. sply.

Base point

Set Room Temp

Max. Suppl.T.

6 720 821 651-18.2O

6 720 821 651 (2017/05)CRC200

Service menu | 17

8.1 System data menu

The heating system is configured automatically or manually in
this menu. With automatic configuration, important data are
preset.

Menu item Default

setting

Control range Functional description

HC assignment 1 1 ... 8 Number of the assigned heating zone
Auto-Config. NO NO | YES NO: Manual configuration of the system

YES: Automatic system configuration, detects connected modules and
temperature sensors and presets important data.

Pump conn. see

desciption

Heat Source |
HC Module

Heat Source: Heating pump connected to heat source (only for heating
zone 1). Heat Source is default if no CZM100 is detected.

HC Module: Heating pump connected to CZM100. HC Module is default if
CZM100 is detected.

Heat. System High Temp High Temp |

Low Temp.

Assign the heating system to the heating zone to cancel the factory default.

Control type Room supply External simple |

External opt. |
Room supply |
Room output

Select control type (details in  Chapter 2.1.1, Page 4)

Outdoor reset operation ( ):
External simple: simple outdoor reset control
External opt.: optimized outdoor reset control

Room temperature-dependent operations:
Room supply: supply temperature control
Room output: power output control (not possible if CZM100 is detected).

Ext.RoomSens. NO NO | YES NO: The room temperature is determined by the internal temperature

sensor of the user interface.
YES: An additional room temperature sensor connected to the user

interface (future feature; currently not available).

DHW

(factory settings
depend on
installed heat
source)

No | Yes, 3-wy vlv |
Yes, pr. pump

DHW is only available if supported by the heat source (not visible at combi
boilers)

No: No hot water system installed in conjunction with boiler
Yes, 3-wy vlv: Hot water system is supplied via 3-way valve
Yes, pr. pump: Hot water system is supplied via indirect tank

LLH Sensor /
System Supply
Sensor

No No | Yes, on mod. LLH Sensor / System Supply Sensor is only available for heating zone 1

No: No low-loss header installed
Yes, on mod.: Low-loss header installed (even if temperature sensor is

connected at heat source).

Recirculation NO NO | YES Recirculation is only available for heating zone 1

NO: The recirculation pump cannot be controlled by the heat source.
YES: If the recirculation pump is to be controlled by the heat source, the

recirculation pump must be activated here as well.

Solar module NO NO | YES NO: No solar module connected.

YES: No function in US/CA; no solar module available

WWSD 70 °F (21 °C) OFF | 50...86 °F

(10...30 °C)

Heating is off in the entire system at this set outdoor temperature. This
saves energy at higher outdoor temperatures. (only for heating zone 1)

Table 5 Settings in the system data menu

6 720 821 651 (2017/05) CRC200

18 | Service menu

Minimum outside temperature (outdoor design)

The minimum outside temperature is the average value of each
of the coldest outside temperatures or recent years, and it has
an influence on the heating curve. The value of the region can
be taken from the required heat load calculation that should be
done for every building, or from the climate zone chart

▶ Set the minimum outside design temperature for the

heating system.

Min.outs.temp
()

14 °F
( – 10 °C)

– 31...50 °F
( – 35...10 °C)

Minimum outdoor temperature is the outdoor design temperature used in
the heat loss calculation; only available when an outdoor temperature
sensor is connected and outdoor reset mode is enabled.

Damping ( ) ON ON | OFF This setting is only available when an outdoor temperature sensor is

connected and outdoor reset mode is enabled.
ON: The set type of building affects the measurement of the outside

temperature. The outside temperature is delayed (dampened).
OFF: The measured outside temperature is included undampened in the

outdoor reset control.

Building Type
()

Medium Tight | Medium |

Loose

A measure of the thermal storage capacity of the heated building
Tight: High storage capacity such as a brick house with thick walls

(significant damping of the outdoor temperature)
Medium: Medium storage capacity
Loose: Low storage capacity such as a non-insulated weekend house made

of wood (low damping of the outdoor temperature)

Reset All NO NO | YES NO: The current settings have been retained.

YES: The factory settings are being restored (except time and date).

Menu item Default

setting

Control range Functional description

Table 5 Settings in the system data menu

Minimum outside temperature in °F ( °C)

Atlantic City 5 ( – 15) Montreal – 9 ( – 23)
Anchorage New Orleans 19 ( – 7)
Bermuda 59 (15) New York 0 ( – 18)
Boston 0 ( – 18) Ottawa – 9 ( – 23)
Buffalo – 5 ( – 21) Philadelphia 0 ( – 18)
Cleveland – 4 ( – 20) Phoenix 25 ( – 4)
Chicago – 9 ( – 23) Pittsburgh – 4 ( – 20)
Dallas 10 ( – 12) Portland – 5 ( – 21)
Detroit – 9 ( – 23) Quebec – 15 ( – 26)
Honolulu 59 (15) Richmond 15 ( – 9)
Houston 19 ( – 7) San Diego 35 (2)
Indianapolis – 10 ( – 23) San Francisco 36 (2)
Los Angeles 36 (2) St. Louis 0 ( – 18)
Miami 36 (2) Toronto – 9 ( – 23)
Minneapolis – 20 ( – 29) Washington 0 ( – 18)

Table 6 Minimum outdoor temperature for USA

6 720 821 651 (2017/05)CRC200

Service menu | 19

8.2 Heating zone menu

Settings for the heating zone are made in this menu. With
automatic configuration, important data are preset.
Afterwards, only the relevant menu items appear in this menu.

Example: In case of outdoor reset control, the menu item for
room temperature-dependent control is not displayed.

NOTICE: Risk of damaging or destroying the
screed!

▶ If radiant floor heating (Low Temp.) is

installed, observe the maximum supply
temperature recommended by the
manufacturer.

Menu item default setting Control range Functional description

Design Temp
()

113 °F (45 °C) 86...140 °F (30...60 °C)

(with Low Temp.
heating) | 86...185 °F
(30...85 °C) (only High
Temp)

Only visible if Control type = External opt. (Optimized outdoor
reset control) is selected:

This is the supply temperature requested at the outdoor design
temperature (see setting Min.outs.temp). The control range
depends on the heating system selected.

Base point
()

77 °F (25 °C) 68 °F (20 °C) ... End

point (with Low Temp.
heating)

Only visible if Control type = External simple (simple outdoor
reset control) is selected:

This is the supply temperature at fixed outside temperature of
68 °F (20 °C). The range is limited by the setting of the End
point.

End point ( ) 113 °F (45 °C)

(with Low Temp.
heating)

Base point ... 140 °F
(60 °C) (with Low Temp.
heating)

Only visible if Control type = External simple (simple outdoor
reset control) is selected:

This is the supply temperature requested at the outdoor design
temperature (see setting Min.outs.temp). The range is limited
by the setting of the Base point.

167 °F (75 °C)
(with High Temp
heating)

Base point ... 185 °F
(85 °C) (with High Temp
heating)

Max. Suppl.T. 118 °F (48 °C)

(Low Temp.
heating) | 167 °F
(75 °C) (only High
Temp)

86...140 °F (30...60 °C)
(with Low Temp.
heating) | 86...185 °F
(30...85 °C) (only High
Temp)

Maximum supply temperature; the control range depends on
the heating system selected.

PID charact. Medium Fast | Medium | Slow Control characteristics (only visible when room temperature-

dependent control is selected):

Fast: Fast (2k P range), older home, loose construction, limited
insulation

Medium: Average (3k P range), Minimum building
requirements, medium construction

Slow: Slow (4k P range), newer home, tight construction, well
insulated

Opt. pump run NO NO | YES YES: Optimized pump operation active: The heating pump runs

as little as possible on the basis of the supply temperature
(available only with supply temperature control). This saves
energy but may also reduce comfort.

NO: If the system has more than one heat source installed (e. g.
a hybrid system) or a buffer storage tank is installed, this
function must be deactivated.

Table 7 Settings in the heating zone menu

6 720 821 651 (2017/05) CRC200

20 | Service menu

Threshold temperature for frost (frost protection limit
temperature)

Room Feedback
()

6 °F (3 °C) OFF | 2 ... 18 °F

(1...10 °C)

The outdoor reset control functions independent of the room
temperature.

The higher the setting value, the greater the influence of the
room temperature on the heating curve.

Contin. heat
()

OFF OFF | – 22...50 °F

( – 30...10 °C)

At this set outdoor temperature, setback no longer occurs. The
system operates in the heating mode to prevent greater cooling.

Frost protect by Room Temp. OFF |

by Outdoor Temp ( ) |
by Room Temp. | Room ­Outside ( )

Note: To ensure frost protection for the heating zone, set
outdoor temperature-dependent frost protection. This setting
is independent of the set control type.

Outdoor temperature-dependent settings are only shown with
connected outdoor temperature sensor.

OFF: Frost protection off
Other: Frost protection is deactivated/activated on the basis of

the temperature selected here ( Threshold temperature for
frost (frost protection limit temperature), Page 20)

Frost thresh. 41 °F (5 °C) – 4...50 °F

( – 20...10 °C)

 Threshold temperature for frost (frost protection limit
temperature), Page 20

DHW Priority ON ON | OFF ON: Water heating is activated, the heat demand of the heating

system is canceled
OFF: Water heating is activated, the heat demand of the heating

system is being met simultaneously (only possible if the hot
water system is supplied via the tank pump)

Menu item default setting Control range Functional description

Table 7 Settings in the heating zone menu

NOTICE: Risk of destroying hot water­conducting system components if the
threshold temperature for frost is set too low
and room temperatures are below 32 °F
(0 °C)!

▶ Only contractors are permitted to adjust

the factory setting of the frost threshold
temperature (41 °F / 5 °C) for the system.

▶ Do not set the threshold temperature too

low.
Damage resulting from a frost threshold
temperature set too low is not covered
under warranty!

▶ Assured frost protection of the system is

not possible without an outdoor
temperature sensor.

Outdoor temperature-dependent settings are
only shown with connected outdoor
temperature sensor.

6 720 821 651 (2017/05)CRC200

Service menu | 21

With an outdoor temperature-dependent frost threshold
temperature ( ) with or without the effect of room
temperature , the following applies:

• If the outdoor temperature exceeds the set threshold
temperature by 2 °F (1 K / °C) and there is no heat demand
from the heating system, the heating pump switches off.

• If the outdoor temperature drops below the set threshold
temperature, the heating pump switches on (system frost
protection).

With a room temperature-dependent frost threshold
temperature, the following applies:

• If the room temperature exceeds 45 °F (7 °C) and there is
no heat demand from the heating system, the heating
pump switch is off.

• If the room temperature drops below 41 °F (5 °C) the
heating pump switches on (no system frost protection).

With a room- /outdoor temperature-dependent frost threshold
temperature ( ), the following applies:

• If the room temperature drops below 41 °F (5 °C) or if the
outdoor temperature drops below the set threshold
temperature, the heating pump switches on (system frost
protection).

Set the heating system and heating curve for outdoor reset
control

▶ Heating type (High Temp or Low Temp. heating) in the

System Data > Heat. System menu. Adjust the system.

▶ Set the control mode (optimized or simple heating curve) in

the System Data > Control type menu ( ).
Menu items that are not required for the selected heating
system and control mode are hidden.

The heating curve is the decisive basic factor for an economic
and convenient operation of the heating system with outside
temperature compensated control. To calculate the heating
curve, the control system requires you to enter a number of
parameters for the heating system, from which it automatically
calculates the optimum heating curve by means of a
mathematical formula.

This calculation takes into account the “damped” outside
temperature and the room control temperature. The room
control temperature is an internal parameter based on the
desired room temperature (set room temperature) and the
room influence factor.

This allows the end customer to influence the heating curve
directly by modifying the set room temperature.

The most important settings are the design temperature,
maximum supply temperature and minimum outdoor
temperature.

The heating curve ( fig. 13 and 14) is determined by the
base point and end point. The base point exists with an
adjusted outside temperature of 68 °F (20 °C) with a supply
temperature of 77 °F (25 °C) (at a room temperature of 70 °F
(21 °C)). The end point of the heating curve must be set
according to the design temperature of the heating system.

The gradient of the characteristic heating curve (slope) is
determined by the parameters Min.outs.temp (the lowest
outdoor temperature expected in a particular region; page 18)
and the Design Temp (the supply temperature which is to be
reached at the minimum outside temperature) ( fig 13
and 14, left).

The heating curve can be shifted up or down in parallel by
matching the set room temperature ( fig 13 and 14, right).

The by Room Temp. setting does not offer
absolute frost protection, because piping
installed in soffits, for instance, can freeze.
This can happen even though the temperature
in the reference room is considerably above
41 °F (5 °C) as the result of outside heat
sources. If an outdoor temperature sensor is
installed, frost protection can be assured for
the entire heating system regardless of the
control type set:

▶ In the Frost protect menu, set either by

Outdoor Temp or Room - Outside ().

6 720 821 651 (2017/05) CRC200

22 | Service menu

Optimized heating curve

The optimize heating curve (Control type: External opt.) is a
curve that curves upward and is based on the precise

correlation between the supply temperature and the relevant
outside temperature ( ).

Fig. 13 Settings for heating curve with Low Temp. heating

Left: Slope changed by adjusting design temperature T

AL

and minimum outdoor temperature T

A,min

Right: Parallel shifting over desired room temperaturer

T

A

Outdoor temperature

T

VL

Supply temperature

[1] Setting: T

AL

= 113 °F (45 °C), T

A,min

= 14 °F (–10 °C) (base curve), limited to T

VL,max

= 118 °F (48 °C)

[2] Setting: T

AL

= 104 °F (40 °C), T

A,min

= 14 °F (–10 °C), limited to T

VL,max

= 118 °F (48 °C)

[3] Setting: T

AL

= 95 °F (35 °C), T

A,min

= –4 °F (–20 °C), limited to T

VL,max

= 118 °F (48 °C)

[4] Parallel shifting of the base curve [1] by increasing the desired room temperature, limited to T

VL,max

= 118 °F (48 °C)

[5] Parallel shifting of the base curve [1] by increasing the reducing room temperature

Fig. 14 Settings for heating curve with High Temp heating

Left: Slope changed by adjusting design temperature T

AL

and minimum outdoor temperature T

A,min

Rechts: Parallel shifting over desired roomtemperaturer

T

A

Outdoor temperature

T

VL

Supply temperature

[1] Setting: T

AL

= 167 °F (75 °C), T

A,min

= 14 °F (–10 °C) (base curve ), limited to T

VL,max

= 167 °F (75 °C)

[2] Setting: T

AL

= 176 °F (80 °C), T

A,min

= 14 °F (–10 °C), limited to T

VL,max

= 176 °F (80 °C)

[3] Setting: T

AL

= 158 °F (70 °C), T

A,min

= –4 °F (–20 °C), limited to T

VL,max

= 167 °F (75 °C)

[4] Parallel shifting of the base curve [1] by increasing the desired room temperature, limited to T

VL,max

= 176 °F (80 °C)

[5] Parallel shifting of the base curve [1] by increasing the reducing room temperature, limited to T

VL,max

= 167 °F (75 °C)

T

A

T

VL

T

A

T

VL

6 720 811 135-29. 1O

+32

+50+68

+14

-4

68

86

104

122

140

F

20

30

40

50

60

F

0

+10+20

-10

-20

C

C

+32

+50+68

+14

-4

68

86

104

122

140

F

20

30

40

50

60

F

0

+10+20

-10

-20

C

C

1

2

3

1

4

5

+32

+50

+68

+14

-4

68

86

104

122

140

158

176

194

F

20

30

40

50

60

70

80

90

F

0

+10+20

-10

-20

C

6 720 811 153-19. 1O

C

+32

+50+68

+14

-4

68

86

104

122

140

158

176

194

F

20

30

40

50

60

70

80

90

F

0

+10+20

-10

-20

C

C

T

A

T

VL

T

A

T

VL

1

2

3

1

4

5

6 720 821 651 (2017/05)CRC200

Service menu | 23

Simple heating curve

The simple heating curve (Control type: External simple) is a
simplification of the curved heating curve as a straight line. The
straight line is described by two points ( ).

8.3 Function test menu

Using this menu, the pump/valve for each assigned heating
zone can be tested. They are tested by setting various setting
values. You can check whether the pump/valve responds
appropriately by observing the response of the corresponding
component. If Activation is set to YES in this menu, the normal
heating mode is interrupted in the entire system. All settings
are saved. The settings in this menu are only temporary and
revert to the respective default settings as soon as Activation
is set to NO or the Function Test menu is closed.

Low Temp.

heating

High Temp

heating

Minimum outside
temperature T

A,min

14 °F (–10 °C) 14 °F (–10 °C)

Base point 77 °F (25 °C) 77 °F (25 °C)
End point 113 °F (45 °C) 167 °F (75 °C)
Maximum supply

temperature T

VL,max

118 °F (48 °C) 167 °F (75 °C)

Table 8 Factory settings for the simple heating curve

CAUTION: Risk of scalding if tank temperature
limiter is deactivated during the function test!

▶ Close all DHW taps.
▶ Inform occupants of the premises of the

risk of scalding.

Menu item default

setting

Control range Functional description

Activation NO | YES NO: The actuators revert to their previously stored position so that the system starts

up again after the function tests in the same condition as when shut down.
YES: The instantaneous operating status (mixer: actuation stroke; pump: stage or

speed) of the actuators in the system is saved. All actuators in the system switch to
the test mode.

System pump 0 (in %) 0 | 100 (in %) 0: System pump for heating zones with valves not running (switched off).

100: System pump for heating zones with valves running at maximum speed.

HC Pump 0 (in %) 0 | 100 (in %) 0: Heating pumps not running/zones valves closed (off).

100: Heating pumps running/zones valves open (on).

Table 9 Settings in the function test menu

6 720 821 651 (2017/05) CRC200

24 | Service menu

8.4 Info menu

Heating system settings and measurements are displayed in
this menu. No changes can be made.

Menu item Possible values Description

Outdoor Temp.
()

– 40...122 °F
( – 40...50 °C)

The currently measured outdoor temperature is available only if an outdoor
temperature sensor is installed.

Appl. oper. ON Burner operating

OFF Burner not operating
Appl.set sply 68...194 °F (20...90 °C) Supply temperature required at the heat source (set temperature)
Appl.act.sply 68...194 °F (20...90 °C) Supply temperature measured at the heat source (actual temperature)
Appl.max.sply 95...194 °F (35...90 °C) Maximum supply temperature set at the heat source
LLH Temp. 68...194 °F (20...90 °C) Current hot water temperature in the low-loss header
HC Operation OFF Current operating mode of assigned heating zone,  User interface operating

instructions

Heating

Setback

Summer

Manual
HC set.sply 68...194 °F (20...90 °C) Required supply temperature in assigned heating zone
HC act. sply. 68...194 °F (20...90 °C) Measured supply temperature in heating system
Set Room Temp OFF Heating switched off, e. g. in the summer

41...86 °F (5.0...30.0 °C) Desired room temperature
Room Temp. 41...86 °F (5.0...30.0 °C) Measured room temperature
DHW Operation ON Water heating active

OFF Water heating not active
Set DHW Temp 59...176 °F (15...80 °C) Desired hot water temperature
DHW Temp. 59...176 °F (15...80 °C) Measured hot water temperature

Table 10 Info menu

6 720 821 651 (2017/05)CRC200

Service menu | 25

8.5 Maintenance menu

Service-relevant settings are made in this menu, e. g. deleting
the list of faults after all faults have been rectified in the course
of service.

If the service display is set directly at the heat source on the
basis of the run time or burner hours, the setting
Maint.message appears under ON, but the Maint. date
cannot be set.

8.6 System info menu

Detailed information about the BUS users in the system can be
queried in this menu. No changes can be made.

Menu item default

settings

Control range Functional description

Maint.message OFF ON | OFF Maint.message is not available for heating zone 1.

No service display appears on the user interface.
A service display appears on the screen of the user interface on the set date

( Maint. date).

Maint. date 01/01/2012 –

12/31/2099

Date for next heating system maintenance. (only for heating zone 1)

Reset Maint. NO NO | YES Reset Maint. is not available for heating zone 1.

The service display is not reset.
The service display is reset.

Current Fault e. g. 09/29/

2014
A11/802

All current faults are displayed, arranged in order of fault severity: the fault date
appears in the text line, the fault code and sub-code flash alternately in the
value display.

Fault History e. g. 07/31/

2014
A02/816

The last 20 faults are displayed, arranged in order of the time of occurrence.
The fault date appears in the text line, the fault code and sub-code flash
alternately in the value display.

Clear Fault NO ON | OFF The fault history is retained.

The fault history is deleted.

Table 11 Settings in the maintenance menu

Menu item Display example Functional description

Install.date 09/14/2014 The date of the first confirmed configuration is recorded automatically.
Control unit xxx.x Designation of the heat source controls
Control SW 1.xx Software version of the heat source controls

2.xx
SW controller NFxx.xx User interface software version
HC Module SW NFxx.xx CZM100 software version

1)

1) Not available if a corresponding module is installed.

Table 12 System info

6 720 821 651 (2017/05) CRC200

26 | Troubleshooting

9 Troubleshooting

A fault appears on the display of the user interface. The cause
can be a fault on the user interface, in a component, in an
assembly or on the heat source. The instructions belonging to
the affected component, assembly or heat source used and
especially the service manual with detailed fault descriptions
contain additional information on troubleshooting. Many heat
source faults do not appear on the display of the user interface.
They are described in the documents for the heat source used.

The last 20 faults that occurred are saved with a time stamp
(fault history,  Page 25).

Use only original spare parts. Damage
resulting from spare parts not supplied by the
manufacturer is not covered under warranty.
If a fault cannot be corrected, contact the
service technician responsible for your area or
the nearest Bosch office.

Fault

code

Sub-

code

Cause or fault description Testing sequence/Cause Measure

A11 6004 Solar module wrongly

activated

– Deactivate solar module in the service

settings ( Bild 12, Seite 16).

A12 815 Supply temperature sensor

faulty

(3201 = Heating zone 1;
...
3208 = Heating zone 8)

Check cable connecting supply
temperature sensor and zone module

If there is a fault, replace cable/sensor

Check connection between zone
module and supply temperature
sensor

If screws or a plug is loose, rectify the contact
problem

Check the supply temperature sensor
against its data table

If values do not agree, replace the sensor

Check the voltage to the connection
terminals of the supply temperature
sensor on the zone module against its
data table

If sensor values agree but the voltage values
do not, replace the zone module

A31
...
A38

3101
...
3108

Zone module has no
communication to CRCx00 in
the heating zone

(3101 = Heating zone 1;
...
3108 = Heating zone 8)

Check configuration on the
corresponding controller

Assign the correct heating zone and set
Control type to Room supply, if outdoor
temperature sensor not installed.

Check heating zone assignment on
other controllers

Assign the correct heating zones

Check if cable for EMS connection is
damaged

Replace damaged cable

Controller defective Replace defective controller

A31
...
A38

3201
...
3208

Zone module detects
unreasonable status of the
end switch

(3201 = Heating zone 1;
...
3208 = Heating zone 8)

Check corresponding zone valve and
end switch for status and defects

Replace faulty zone valve or end switch

Module wrongly configured: switch is
in the wrong position.

See installation instructions CZM100,
chapter 2.2

Table 13 Fault table

6 720 821 651 (2017/05)CRC200

Troubleshooting | 27

A61
...
A68

1005 System configuration not

confirmed

(A61 = Heating zone 1;
...
A68 = Heating zone 8)

System configuration not completed Configure system completely and confirm

A61
...
A68

1010 No communication via BUS

connection EMS

(A61 = Heating zone 1;
...
A68 = Heating zone 8)

Check whether bus cable was
connected incorrectly

Rectify wiring faults and switch controller off

and on again
Check whether bus cable is faulty. Repair or replace the bus cable
Remove expansion module from BUS

and switch controller off and on
again. Check whether the cause of
the fault is a module or module wiring

Replace faulty BUS user

A61
...
A68

1030
1034
1035
1036

Internal data error of the
controller.

(A61 = Heating zone 1;
...
A68 = Heating zone 8)

Controller faulty Replace controller

A61
...
A68

1037 Outdoor temperature sensor

faulty

(A61 = Heating zone 1;
...
A68 = Heating zone 8)

Check configuration. The selected
setting requires an outdoor
temperature sensor.

If an outdoor temperature sensor is not

desired. Select the room temperature-

dependent configuration in the controller.
Check the connecting cable between

the controller and outdoor
temperature sensor for continuity

If there is no continuity, rectify the fault

Check the electrical connection of the
connecting cable in the outdoor
temperature sensor or on the plug in
the controller

Clean corroded connecting terminals in the

outdoor sensor housing.

Check the outdoor temperature
sensor in accordance with table
( Technical documentation for the
heat source)

If values do not match, replace the sensor

Check the voltage at the connecting
terminals of the outdoor temperature
sensor in the controller in accordance
with table

If the sensor values matched, but the voltage

values do not match, replace the controller

A61
...
A68

1038 Invalid time/date

(A61 = Heating zone 1;
...
A68 = Heating zone 8)

Date/time not yet set Set date/time
Prolonged loss of power supply Avoid voltage failures

Fault

code

Sub-

code

Cause or fault description Testing sequence/Cause Measure

Table 13 Fault table

6 720 821 651 (2017/05) CRC200

28 | Environmental protection/disposal

10 Environmental protection/disposal

Environmental protection is one of the fundamental company
policies of the Bosch Group. We regard quality of performance,
economy and environmental protection as equal objectives.
Environmental protection laws and regulations are strictly
adhered to. To protect the environment, we use the best
possible technology and materials taking into account
economic points of view.

Packaging

For the packaging, we participate in the country-specific
recycling systems, which guarantee optimal recycling. All
packaging materials used are environmentally-friendly and
recyclable.

Old appliances

Old appliances contain resources that should be recycled.
The components are easy to separate and the plastics are
marked. This allows the various components to be sorted for
appropriate recycling or disposal.

A61
...
A68

1051
...
1058

External room sensor not
available

(A61 = Heating zone 1;
...
A68 = Heating zone 8)

Wrong configuration in the controller
for external room sensor.

Change to No in service menu (external room
sensor is not yet available)

A61 3011 CRC200 in heating zone 1

wrongly configured

Check the configuration of controller
in heating zone 1.
A zone module is detected but not
allowed with current settings

If a zone module is to be installed, set the
setting Control type to Room supply, if
outdoor temperature sensor not installed.

A61
...
A68

3011
...
3018

CRCx00 with corresponding
heating zone is missing

(A61 = Heating zone 1;
...
A68 = Heating zone 8)

Check the configuration of the
controller for the corresponding
heating zone

Assign the heating zone properly.

Check connection to controller and
connecting cable

Connect controller properly with a
functioning cable

Check if controller is faulty Replace faulty controller

A61
...
A68

3061
...
3068

No communication with zone
module

(A61 = Heating zone 1;
...
A68 = Heating zone 8)

Check connection to zone module
and connecting cable

Connect controller and zone module
properly with a functioning cable

Check if zone module is faulty Replace faulty zone module

A61
...
A68

3091
...
3098

Room temperature sensor
faulty

(3091 = Heating zone 1;
...
3098 = Heating zone 8)

Controller faulty Replace controller

Fault

code

Sub-

code

Cause or fault description Testing sequence/Cause Measure

Table 13 Fault table

6 720 821 651 (2017/05)CRC200

Setup log (Service menu/contractor) | 29

11 Setup log (Service menu/contractor)

__ _

Table 14 Enter the ID number on the backside of the user interface here. Removal from wall plate has to be done to look at the ID.

Customer/system user Installer

........................................................................................

........................................................................................

Date commissioned:

Menu item Selection

System data (for details see Table. 5, Page. 17)

HC assignment  1  2  3  4  5  6  7  8

Pump conn.  Heat Source  HC Module (CZM100)

Heat. System  High Temp  Low Temp.

Control type  External simple  External opt.  Room supply  Room output

DHW  No  Yes, 3-wy vlv  Yes, pr. pump

LLH Sensor  No  Yes, on mod.

Recirculation  NO  YES

WWSD  OFF | °F ( °C)

Min.outs.temp °F( °C)

Damping  OFF  ON

Building Type  Tight  Medium  Loose

Table 15 Setup log

6 720 821 651 (2017/05) CRC200

30 | Index

Index

A

Accessory .................................................................... 7

Activation (function test) .............................................. 23

Attaching the user interface .......................................... 10

Automatic configuration ............................................... 17

B

Base point .................................................................. 19

BUS connection ............................................................ 9

C

Cable ........................................................................... 9

Commissioning

– Checklist ................................................................. 14

– Important settings .................................................... 14

Commissioning report .................................................. 29

Conditions power supply .............................................. 14

Connection to the heat source ......................................... 9

Continuous heating ...................................................... 19

Control type ............................................................... 17

Controls ................................................................11, 25

Current fault ............................................................... 25

D

Design temperature ......................................................19

DHW Priority ...............................................................19

Dimensions ...................................................................7

Disposal .....................................................................28

E

EMS .............................................................................7

End point ....................................................................19

Environmental protection ..............................................28

External room sensor ....................................................17

F

Fault codes .................................................................26

Fault date

– Current fault .............................................................25

– Fault history .............................................................25

Fault history ................................................................25

Frost protection

– Heating zone ............................................................19

– System ....................................................................20

Frost thresh. .........................................................19–20

Function module ............................................................7

Functional test .............................................................16

Heating zone (for details see Table. 7, Page. 17)
Design Temp °F( °C)

Base point °F( °C)

End point °F( °C)

Max. Suppl.T. °F( °C)

PID charact.  Fast  Medium  Slow

Opt. pump run  NO  YES

Room Feedback K

Contin. heat  OFF | °F ( °C)

Frost protect  OFF  by Outdoor Temp  by Room Temp.  Room - Outside

Frost thresh. °F( °C)

DHW Priority  OFF  ON

DHW

Max. DHW Temp °F( °C)

Maintenance

Maint. date

Menu item Selection

Table 15 Setup log

6 720 821 651 (2017/05)CRC200

Index | 31

H

Heat source operating status .........................................24

Heating curve ..............................................................21

– Radiant floor heating .................................................22

– Radiator ...................................................................22

Heating pump (function test) .........................................23

Heating system ...................................................... 17, 21

Heating zone ...............................................................16

Heating zone assignment .............................................. 17

Heating zone operating mode ........................................24

Heating zone pump connection ......................................17

Hot water

– Service menu ...........................................................16

– System data .............................................................17

– via 3-way valve .........................................................17

– via tank pump ...........................................................17

Hot water operating status ............................................24

Hot water temperature

– Actual value .............................................................. 24

– Maximum value .........................................................24

– Set point ..................................................................24

I

Info (service menu) ......................................................16

Installation ....................................................................7

Installation date ...........................................................25

Installation of the base ....................................................9

L

Low-loss header ..........................................................17

M

Main menu

– Overview .................................................................15

– Settings ...................................................................15

Maint. date .................................................................25

Maintenance ......................................................... 14, 16

O

Old appliances .............................................................28

Outdoor temperature ............................................... 4, 18

P

Packaging ...................................................................28

PID charact. ................................................................19

Power connection ..........................................................9

Power failure ...............................................................14

Power reserve ......................................................... 4, 14

Product Description .......................................................4

R

Recirculation pump ......................................................17

Recycling ....................................................................28

Removing the user interface from the base ...................... 10

Reset entire user interface ............................................ 17

Reset fault ..................................................................25

RESET service ............................................................. 25

Room Feedback .......................................................... 19

Room temperature

– Actual value ............................................................. 24

– Set point ................................................................. 24

Room temperature-dependent control .............................. 4

S

Safety instructions ......................................................... 3

Scope of delivery ........................................................... 6

Service display ............................................................ 25

Service menu

– Overview .................................................................16

– Settings ................................................................... 16

Shut down .................................................................. 14

Shutdown .................................................................. 14

Software version

– Control system ......................................................... 25

– Controller ................................................................ 25

– Heating zone module ................................................. 25

Supply temperature

– Actual value at the heat source .................................... 24

– Heating zone actual value ........................................... 24

– Heating zone set point ............................................... 24

– Maximum value at the heat source ...............................24

– Maximum value in heating zone ................................... 19

– Set point on the heat source ....................................... 24

System data ............................................................... 16

System info ................................................................ 16

System pump

– Functional test ......................................................... 23

T

Tank pump ................................................................. 17

Technical Data .............................................................. 7

Temperature

– Heating supply pipe .................................................. 24

– Hot water ................................................................ 24

– on the low-loss header ............................................... 24

Temperature sensor

– on the low-loss header ............................................... 17

Thermal disinfection .................................................... 23

Troubleshooting .......................................................... 26

U

User interface ............................................................. 17

Using as a controller ....................................................... 4