Benchmark ZWB 7-29 CC1 Installation And Servicing page 69

AC
flashing.
Module not detected.
(Constant CH flow temperature according to CH temperature control on boiler.)
Check
7. Remote control status still 0.?
8. The PCB control board is damaged.
7 181 465 346 GB (03.02)
Action
B Power OFF the appliance.
yes:
Remote control:
B Replace top section.
B Turn ON the appliance.
AC? ↓8.
↓8.
no:
B Make a note of the altered service settings (see
table 1, "First Service Level; Values that can be
modified" at page 8 and table 5, "Secondary
Service Level; Values that can be modified" at
page 11).
B Power OFF the appliance.
B Disconnect the boiler electrical connection.
B Change PCB control board.
B Reconnect the boiler electrical connection.
B Turn ON the appliance.
B Restore service settings previously noted down.
To return to normal function mode:
B Press buttons
B Regulate the temperature control
temperature control
positions.
Failure identification procedure
and simultaneously.
and the
on the previously set
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