Faults; Troubleshooting - Bosch ZBR16-3A Series Installation And Service Instructions Manual
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Also See for ZBR16-3A Series:
- Installation and service instructions manual (120 pages) ,
- Operating instructions manual (48 pages) ,
- Manual (4 pages)
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76 | Faults
17
Faults
17.1 Troubleshooting
DANGER: Explosion!
▶ Close the gas cock prior to working on the gas train.
▶ Check for gas leaks after carrying out work on the gas
train.
DANGER: Risk of flue gas poisoning.
▶ Check for leaks after carrying out work on the venting
system.
DANGER: Risk of electric shock!
▶ Always disconnect the appliance from the mains
power before performing any work. Disconnect the
emergency shutoff switch or disengage the heating
system circuit breaker. Take measures to prevent
accidental reconnection.
WARNING: Danger of scalding!
Hot water can scald.
▶ Drain the appliance before working on components
that are water filled.
NOTICE: The Heatronic boiler control can be damaged
by leaking water.
▶ Cover the Heatronic prior to work on water filled
components.
The Heatronic boiler control monitors all safety and control
components.
If a fault arises during operation, an audible warning tone sounds.
Press a button to mute the warning sound.
The display indicates a fault code (e.g.
If the reset button is flashing:
▶ Press the reset button and hold it until
The appliance starts up again and the current supply temperature is
displayed.
If the reset button is not flashing:
▶ Switch the appliance OFF and ON again.
The appliance starts up again and the current supply temperature is
displayed.
An overview of the faults can be found on page 77.
An overview of the status codes can be found on
page 75.
6 720 806 992 (2015/03)
) and the reset button flashes.
appears on the display.
If the fault persists:
▶ Check the PCB and replace if required. Adjust the service functions in
accordance with the commissioning report ( page 81).
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