Thermal Control In Winter Mode; Thermal Control In Summer Mode - Biasi RIVA COMBI Service Manual

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Third Part
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again as described at step 3, turn the knob
half a turn and re-insert the spindle.
11) Operate the boiler and close the gas supply
so that the boiler goes into the safety lock-
14

Thermal Control in Winter Mode

See functioning with the function
control in the
(sec. 15)
Circulator off
Operates motorised valve
Ignition device not fed
15

Thermal Control in Summer Mode

Circulator on
Supplies the ignition device
RIVA COMBI SERVICE MANUAL – REV A
(edition-0106)
Switch in the
mode
YES
NO
Switch in the
Taking
water from the domestic hot
YES
water circuit?
Is domestic
hot water outlet temperature
YES
lower than that
required?
out state. Verify the correct operation of the
boiler reset button by pressing and releasing
it.
function mode
Taking
water from the domestic hot
water circuit?
Request for heat from
room thermostat?
YES
Starts the circulator
Primary circuit flow
switch OK?
YES
Is primary circuit
temperature higher than that
selected?
NO
Operates motorised valve
Supplies the ignition device
function mode
NO
Primary circuit flow
switch OK?
YES
NO
Ignition device not fed
Control p.c.b. 11.62
NO
After 25 second circulator
off and faulty primary cir
NO
cuit (see LED table)
YES
Circulator off
Ignition device not fed
After 25 second circulator
off and faulty primary cir
NO
cuit (see LED table)
6-6