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Troubleshooting; For The Installer; For The User - Bosch tronic 3000 c pro us12 Installation And Operating Instructions Manual

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If the problem persists:
The person who initially installed the unit is probably the best

For the Installer

Cold water only -neon light
Water too cold -neon light
Water flow too low, or
temperature too high.
Table 6

For the User

Little or no water flows.
Cold water only -neon light
Cold water only -neon light
Water flow rate too low, or
temperature too high.
Table 7
Tronic 3000 C Pro
Electricity not on.
The water supply is connected to the
OUTLET of the unit.
The high temperature thermal cut out
has tripped.
The flow switch is not working.
Water flow too high for unit to control
One element is not working.
The power supply voltage has dropped.
Temperature is turned too low.
There are restrictions in the plumbing. Check the plumbing. Only use Teflon tape for sealing pipe
The water supply is turned off.
The flow is not high enough to
The water flow rate is too high.
The flow rate is correct.
The inlet water temperature has
The hot tap is not fully open
one to contact for help. You can also call Bosch
Thermotechnology Corporation at 800-798-8161 or visit Please have this guide with you when
you call.
Check electrical supply.
Reconnect the water supply to the INLET (marked in blue).
Reset it by opening the unit and pushing the button on the
cut out (Fig. 2 ). Before you do this you must find the
cause of the problem.
Turn off the power and observe if the flow switch activates
when the water is turned on.
If not contact Bosch Thermotechnology 800-798-8161
Adjust water flow to recommended flow rate.
Switch off the electricity and check the resistance of the
Check the supply voltage to the heater.
Ensure that the temperature dial is in the correct position
for the flow of water.
What do do
Turn on the main supply fully at the stop valve.
Open the inlet service valve fully.
Adjust the flow rate with hot water outlet service valve.
Adjust the temperature dial on the front of the cover.
Adjust the flow rate with hot water outlet service valve.
Adjust the stop/ball valve so that water is at the right
temperature with the tap fully open. Always turn the hot tap
Troubleshooting | 13
What do do
fully on.
6 720 647 088 (2017/05)


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