Frost Protection (R 25 & 30 Appliances); Fault Condition - Worcester benchmark ZWB 7-25 R 25 HE Design, Installation And Servicing Instructions

Operating the Appliance
3.7 Frost protection (R 25 & 30 Appliances)
B Leave master switch switched on.
If the appliance is to be left for long periods switch the central
heating off:
B Add a suitable anti-freeze fluid to the water in the central heat-
ing system.
Suitable products are available from Betz-Dearborn Tel.: 0151
4209563, Fernox Tel.: 01799 550811 and Salamander on
0121 378 0952.
3.8

Fault Condition

In the unlikely event of a fault occurring while the appliance is in
operation:
The display then shows a fault code and the button
flash.
If the button
B Press and hold the button
The appliance will then start up again and the display will show
the central heating flow temperature.
If the button
B Switch the appliance off and then on again at the master
switch.
The appliance will start up again and the central heating flow
temperature will be displayed.
If the fault remains and can not be cleared:
B Call Worcester Heat Systems Ltd. for assistance, giving a
description of the fault and, if possible, the fault code from the
facia display.
16
flashes:
does not flash:
until the display shows "– –".
6 720 610 577 GB (03.11)
may also