Atmos Multi 24/80, Installation & Servicing Instructions Manual

Page: 12 / 43

ATMOS MULTI version 2002 Page 12
5.3 Controls and function.
The function mode of the appliance and the
central heating water pressure are indicated on
the electronic control unit's front fascia (fig 2),
located at the bottom left of the appliance
q
Diagnostic display
(fig 2 ( 1 ))
The boiler's operating status is indicated on the
diagnostic display. The various status codes are
explained in table 1. A flashing display or letter
symbol indicates that a boiler malfunction or
appliance lockout has occurred. The procedure to
follow is given in Section 12 of these instructions
.
q
Central Heating Display (fig 2 ( 4 ))
The central heating display may be set to indicate
either the central heating water pressure (factory
setting) or central heating water temperature. (See
'User's programme' page 9)
If the central heating water pressure is too low or
too high, a warning symbol ‘C’ is shown on the
diagnostic display. Further information is given in
Section 12 of these instructions
q
Hot water button (fig 2 ( 6 ))
If required the heating of domestic hot water may be
switched off using the hot water button. Pressing
the button once will turn off the indicator light and
curtail the hot water demand.
q
Set button (fig 2 ( 2 ))
The set button is used to initiate an integral
programme to allow changes to be made to the
boiler's factory settings and other installation and
service activities. To protect against accidental use
the set button has to be depressed for a period of 5
seconds before activation occurs. Further
information on this subject can be found in the
separately available Atmos Multi Service Manual.