Setting The Boiler Control Function Modes; Useful Output Setting - Biasi RIVA COMPACT HE MK2 M96A.24SR/C Service Manual

Electronic control/ignition p.c.b.
Normally operating boiler
(see the previous table for details)
C.h. operation
Frost protect operation
Faulty c.h. temperature probe NTC
Faulty flue temperature probe NTC
Faulty primary circuit
(no water or low c.h. pressure)
Faulty primary circuit
(absence of flow)
Faulty air pressure sensor
Lack of burner ignition (no ignition signal from
the full seqence ignition device)
Safety thermostat lock out
Flue temperature probe NTC lock out
Flame detection error
Other faults
Lack of power supply or fauly electronic
control p.c.b. *
Lamp Lamp Flashing lamp, alone
OFF ON or simultaneously
with an other lamp.
* These conditions are normal only for a short time when the
power supply is applied to the boiler.
If permanent they indicate a faulty p.c.b.
8.5

Setting the boiler control function modes

It is possible to select the various boiler control function
modes by using the function selector knob A and the
Service knob B (Fig. 4).
During the function modes setting, the boiler does not
operate.
F A
B
Fig. 4
8.6

Useful output setting

To set the useful output proceed as follows:
1 Remove the front panel of the case.
2 Take off the lid of the sealed chamber.
16
Flashing lamp,
alternate with
another lamp.
D E
3 Switch on the appliance at the mains isolating
spur.
4 Turn the boiler OFF positioning the function selec-
tor A as indicated in Fig. 5.
F B
Fig. 5
5 Disconnect the electrical connectors C of the C.h.
temperature probe NTC in Fig. 6
C
Fig. 6
6 Keep pressed the reset button D for about 10 sec-
onds until the lock ---out signal lamp E blinks.
7 Connect the the elctrical connectors C of the C.h.
temperature probe NTC in Fig. 6
8 The lamps F should give the indication as in Fig. 7
(useful output, first step). If not, press the reset
button repeatedly to obtain it.
Where:
Fig. 7
At this step it is possible to visualize the current setting
by keeping the reset button D pressed for more than 5
seconds. The lamps F will flash a number of times
corresponding to the setting Fig. 8 (once for
M96A.24SR/... , four times for M96A.28SR/...).
M96A.28SR/...
4 flashes
M96A.24SR/...
1 flash
Fig. 8
9 To change the setting turn the knob B on a posi-
tion corresponding to the boiler models (Fig. 8).
A
D E
Lamp OFF
Lamp ON
B