Faults - Bosch TR1000T Instructions Manual

9

Faults

DANGER
Risk of electric shock!
▶ Switch off the power supply before carrying out any work
on the appliance.
▶ Installation, repairs and maintenance must only be carried
out by specialised and qualified persons.
Problem Cause
X Overvoltage or the RCD was triggered (performance
too high).
X X Incorrect temperature control by the thermostat.
X Thermostat safety temperature activated.
X Defective heating element.
X Incorrect operation of thermostat.
X X X X Boiler scale on the appliance and/or the safety
assembly.
X X X Pressure in the water system.
X X Capacity of the water system
Tronic 1000 T | Tronic 2000 T – 6721831855 (2021/06)
The following table describes the solutions for possible
problems (these must only be carried out by qualified
contractors).
Solutions
▶ Check whether the appliance is connected to a
dedicated cable which is designed to supply the
required electric current.
▶ Adjust the thermostat.
▶ Confirm that the thermostat is correctly inserted
into the phial pocket.
▶ Reset the thermostat (section 8.5).
▶ Assess maintenance needs (for example,
descaling the electrical heater, removal of dirt).
▶ Replace the heating element.
▶ Replace or reinstall the thermostat.
▶ Perform descaling.
▶ Assess the need for more frequent maintenance
or water treatment if caused by elevated water
hardness.
▶ Replace the safety assembly, if necessary.
▶ Check the system water pressure.
▶ If necessary, install a pressure reducer
(Fig. 13).
▶ Confirm the need for an expansion vessel (pre-
load 0.5 bar below Pmax).
▶ Check pipework.
Faults
171