Biasi Riva Advance Combi Installation & Operation Instructions page 14

5. Electric Diagrams Cont.
Thermal control in the
See functioning with the function
control in the mode
(sec. 9.11)
Is primary circuit
YES
temperature higher than that
LCD
E05 +
starts ignition discharges
Opens gas valve
beginning of ignition period
NO
NO
Is fan rpm
exact?
safety thermostat or flue
NO
temperature probe lock out?
14 RIVA ADVANCE COMBI MANUAL
mode
Switch in the
YES water from the domestic hot
water circuit?
YES
selected?
NO
YES
lock memorised?
starts fan
checks fan rpm
Is fan rpm
NO
exact?
LCD
E09 +
End of wait
YES
period?
YES
End of ignition
period?
NO
YES
YES
YES
function mode
Taking
NO
circulator on
Main circuit pressure
switch consense?
NO
temperature higher than 110°C?
YES
YES
flame presence?
NO
flame presence?
YES
NO
closes gas valve
stops fan
interrupts ignition discharges
memorizes lock
turns on lock--- out light
reset push--- button
pressed?
flame presence?
Request for heat from
room thermostat?
circulator off
YES
LCD
NO
E04 +
cancels lock
Is flue
NO
YES
beginning of wait period
interrupts ignition discharges
gas valve open
fan runs
YES
NO
NO
fan still