6 720 813 962 (2014/12)MP 100
Troubleshooting | 11
5Troubleshooting
The indicator shows the operating condition of the module.
Some faults are also shown in the heat pump display.
6 Environment / disposal
Environmental protection is a fundamental corporate strategy
of the Bosch Group.
The quality of our products, their efficiency and environmental
safety are all of equal importance to us and all environmental
protection legislation and regulations are strictly observed.
We use the best possible technology and materials for
protecting the environment taking into account of economic
considerations.
Packaging
We participate in the recycling programmes of the countries in
which our products are sold to ensure optimum recycling.
All of our packaging materials are environmentally friendly and
can be recycled.
Old electrical and electronic appliances
Electrical or electronic devices that are no
longer serviceable must be collected
separately and sent for environmentally
compatible recycling (in accordance with the
European Waste Electrical and Electronic
Equipment Directive).
To dispose of old electrical or electronic
devices, you should use the return and collection systems put
in place in the country concerned.
Use only original spare parts. Any damage
resulting from spare parts that are not supplied
by the manufacturer is excluded from liability.
If a fault cannot be rectified, please contact the
responsible service engineer.
Indicator Possible cause Remedy
Constantly
OFF
Power supply
interrupted.
▶Switch on the power
supply.
Fuse is
defective
▶ When the power supply is
switched off, replace the
fuse ( Fig. 13,
page 55).
Short circuit in
the BUS
connection
▶ Check BUS connection
and repair if required.
Constantly
red
Internal fault ▶ Replace module.
Flashing
green
Maximum cable
length for BUS
connection
exceeded.
▶ Make shorter BUS
connection.
Fault shown
on user
interface
display
▶The user interface
instructions and the
service manual contain
further information on
troubleshooting.
Constantly
green
No fault Standard operation.
Table 4
0
1
2
3
4
5
6
7
8
9
10
6 720 645 409-20.1
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