Maintenance - Bosch GWI-N Series Training And Service Information

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7. Maintenance

To ensure continued efficient operation of the appliance, it is recommended that it is
checked and serviced as necessary at regular intervals. The frequency of servicing will
depend on the particular installation conditions and use profile, but in general, once a year
should be adequate.
Any intervention / service work in the appliance must be carried out by a competent person
such as registered and competent technician. Before any service operation, turn off the
gas supply at the main gas service cock upstream. Carry out the service operation as
described in the manual.
The service partners have all necessary accessories and tools for the interventions.
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Last 10 stop conditions for
diagnostic purposes
Selecting the parameter will be
possible to see as sequence 2 + 2
digits which corresponds to:
XX – Inlet Temperature
YY – Water flow
Table 36 – PH
L641 – O'rings in contact with water
HFt1 v5 – Gaskets in contact with gas
Pict.50 – Recommended lubricants for connections
6 720 814 719 SM FP_Australia 2017/04 EN
1H – this is last stop occurred
2H – stop occurred before 1H
3H – stop occurred before 2H
4H – stop occurred before 3H
5H – stop occurred before 4H
6H – stop occurred before 5H
7H – stop occurred before 6H
8H – stop occurred before 7H
9H – stop occurred before 8H
10H – stop occurred before 9H