General Care - Biasi RIVA OV M110.18SM/OV User Manual And Installation Instructions

4 The display changes to
has lit there will be a small dot appearing in
the bottom right corner of the display.
5 If the burner fails to light the fan will stop.
Initially this may be due to air in the gas
supply. The boiler will automatically have five
attempts at ignition. After the five attempts it
may be necessary to RESET the boiler by
turning the control knob to RESET position
and repeat (2).
Fig 1. Fascia Panel
1.4.2 Control of Water Temperature
CH: Adjustable via the CH
knob to give radiator temperatures of between
30°C and 80°C. To operate the boiler more
efficiently it is recommended to set the CH
temperature about half way (between '+' and
'-'). Please check with your installer the size of
your radiators.
During periods of no heating requirement, this
control should be set to the Standby position.
Note: If the display shows a flashing 'H' the
boiler is in a service mode
fire continuously at minimum input.
This setting is for the convenience of the
Service Engineer ONLY.
1.4.3 To turn the Boiler off
For short or long periods
Switch the programmer and/or room thermostat
switch to the OFF position.
Note: The appliance is fitted with a
4
'H'. When the burner
temperature control
and the boiler will
frost
protection device. In the event of very cold
conditions, the pump may operate and the boiler
light for a few minutes to protect the appliance
and system from potential frost damage. This
can only function if the gas and electricity
supplies are maintained and the control knob on
the appliance is set to the STAND-BY position.
This function automatically operates the boiler
when the heating system water reaches
temperatures below 5ºC.
If either the gas or electricity services is to be
isolated during a period when frost is likely, the
water circuits must be drained.
1.4.4 Boiler overheat Thermostat
The appliance is fitted with two thermistors
located on the flow and return pipes. In the event
of overheating, the boiler will shut down and the
display will show '1'. Allow the boiler to cool,
then briefly turn
STAND-BY/RESET position and then back to an
'on' position within TWO seconds.
If the fault persists, consult a CORGI registered
installer.
1.4.5 Diagnostic Digital Display
FASCIA PANEL, Figure 1
For fault finding, refer to the diagnostic chart
shown below, together with the notes given in
sections 8.3, 8.4 and 8.5.
Fault Finding Codes
In the event of the appliance failing to light, refer
to the Diagnostics Chart on the next page.
To RESET the boiler turn the control knob to the
STAND-BY/RESET position and back to an 'on'
position within TWO seconds.
1.5

General Care

The front panel, being a powder coated white
finish should be cleaned with a damp cloth and
mild detergent. Do not use abrasive cleaners.
1.6 Routine Servicing
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 upon the
particular installation conditions and usage but
in general once a year should be adequate. It is
law that any service work must be carried out by
a competent person such as British Gas or other
CORGI registered personnel.
the control knob to