SERVICING
Independent - Installation and Servicing
Note. Fit the earth strap provided with the PCB to your
wrist and a suitable earth on the boiler chassis.
1.
2.
3.
4.
5.
6.
57
USER CONTROL PCB REPLACEMENT
3
1.
2.
3.
4.
5.
6.
7.
8.
Note. To program refer to user guide at rear of this
book.
58
REPLACING THE MECHANICAL TIMER