Data Protection Notice; Appendix; Central Heating Pump Characteristics; Heating Pump Fault Display - Worcester Greenstar HIU Installation And Maintenance Instructions Manual

11.6

Heating pump fault display

2
1 3
Fig. 51 Fault display at the heating pump
No. Dsiplay Fault
1 red LED + Rotor is
yellow LED blocked
(LED 5)
2 red LED + Mains
yellow LED voltage too
(LED 4) low
3 red LED + Electronics
yellow LED fault
(LED 3)
Table 31 Fault display at the heating pump
Heating pump test
To check the heating pump operation:
▶ Turn the rotary selector on the control unit to the symbol
▶ Make sure that the rotary selector is turned back to its original
position.
11.7

Sense II diagnosis functions

For detailed information on menu guidance, refer to the instructions for
the room controller.
Diagnosis functions of the heat interface unit
▶ Select menu: Service > Diagnosis > Monitor values > Heat interface
unit.
The following data may be shown:
• Status: shows the current status of the heat interface unit (test
operation, screed drying, DHW mode, heating mode, frost
protection, no demand).
• DHW volumetric flow rate: in litres per minute
• Supply temperature (primary side): in °C
• Return temperature (on the heat source side): in °C
• Heating circuit pump: 0 % (not active), 100 % (active)
• DHW circulation pump: 0 % (not active), 100 % (active)
• DHW control valve opening: 0 % (valve closed) up to 100 % (fully
open)
• Htg. control valve opening: 0 % (valve closed) up to 100 % (fully
open)
Menu "Function check" of heat interface unit
▶ Select menu: Service > Diagnosis > Function check > Heat interface
unit.
The following data may be shown:
• TWS: set DHW control valve (0 %: closed, 100 %: fully open)
• Heating: set heating control valve (0 %: closed, 100 %: fully open)
Greenstar – 6721852556 (2022/11)
Pump operation Remedy
Restart attempt every Wait or
1.33 seconds unblock the
shaft.
Warning only. Pump Check mains
running. voltage.
Pump stops due to Check mains
insufficient mains voltage,
voltage or serious replace pump
fault.
12

Data Protection Notice

We, Bosch Thermotechnology Ltd., Cotswold Way,
Warndon, Worcester WR4 9SW, United Kingdom
process product and installation information,
technical and connection data, communication data,
product registration and client history data to provide
product functionality (art. 6 (1) sentence 1 (b) GDPR
/ UK GDPR), to fulfil our duty of product surveillance and for product
safety and security reasons (art. 6 (1) sentence 1 (f) GDPR / UK GDPR),
to safeguard our rights in connection with warranty and product
registration questions (art. 6 (1) sentence 1 (f) GDPR / UK GDPR) and to
analyze the distribution of our products and to provide individualized
information and offers related to the product (art. 6 (1) sentence 1 (f)
GDPR / UK GDPR). To provide services such as sales and marketing
services, contract management, payment handling, programming, data
hosting and hotline services we can commission and transfer data to
external service providers and/or Bosch affiliated enterprises. In some
cases, but only if appropriate data protection is ensured, personal data
might be transferred to recipients located outside of the European
Economic Area and the United Kingdom. Further information are
provided on request. You can contact our Data Protection Officer under:
Data Protection Officer, Information Security and Privacy (C/ISP),
Robert Bosch GmbH, Postfach 30 02 20, 70442 Stuttgart, GERMANY.
You have the right to object, on grounds relating to your particular
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please contact us via privacy.ttgb@bosch.com To find further
information, please follow the QR-Code.
13

Appendix

.
13.1

Central Heating pump characteristics

p H
[kPa] [m]
7
60
6
50
5
40
4
30
3
20
2
10 1
0 0
0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 2.2 2.4 2.6 2.8 3.0 3.2 3.4 3.6
0.0 0.1
P1
[W]
50
40
30
20
10
0
0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 2.2 2.4 2.6 2.8 3.0 3.2 3.4 3.6
Fig. 52 Modulating speed characteristics
[P] Head (kPA)
[H] Head (m)
[Q] Flow rate, (m
[P1] Power (W)
• PP1: lowest proportional pressure curve.
• PP2: intermediate proportional pressure curve.
• PP3: highest proportional pressure curve. (default setting)
Data Protection Notice
0.2 0.3 0.4 0.5 0.6 0.7 0.8
3
/h or l/s)
Q [m /h]
3
0.9 1.0 Q [l/s]
Q [m /h]
3
6720808928-23.1Wo
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