Control Panel Electronic P.c.b; Function - Biasi Activ A 12OV Service Manual

7

Control panel electronic p.c.b.

7.1

Function

D
Fig. 7.1
A) C.h. temperature increase key
B) C.h. temperature reduce key
C) Reset/Stand---by/Winter/Summer key
D) Display
The Control panel electronic p.c.b. can give to the ser-
vice 3 levels of informations:
Normally information
f
Info modality
f
Function modes setting modality
f
7.2 Normaly information
KEY
The symbol indicates that the boiler
RESET can be directly reactivated by the user,
by pressing the reset button.
The symbol indicates that the fault re-
quires intervention on behalf of specia-
lised technical assistance.
All symbols represented with lines that
surround them, indicate that the sym-
bol is flashing.
SIGNAL DISPLAYED BY THE LCD
LCD FUNCTION
Lack of burner ignition on safety
Er 01 + RESET
lockout
Safety thermostat intervention
Er 02 + RESET
lockout
Er 03 + RESET General lockout
Er 10 + RESET Flue probe interven lockout
Faulty pump or primary tempera-
Er 14 + RESET
ture above 105˚ C
None or too low water flow; Faulty
Er 15 + RESET pump (temp. difference between
probes higher than 35˚ C)
Possible exchange of NTC probes
Er 16 + RESET (Flow or Return) or pump wrongly
mounted (upside --- down)
18
LCD
Er 17 + RESET
A
Er 18 + RESET
Er 04 +
B
Er 05 +
C
Er 06 +
Er 08 +
Er 09 +
FUNCTION
Faulty c.h. temp. probe NTC
(Flow or Return)
Faulty primary circuit (no water or
absence of flow)
Faulty primary circuit (no water or
absence of flow)
Faulty fan control system
Faulty c.h. temp. probe NTC
Faulty external temp. probe NTC
Faulty flue temp. probe NTC
Boiler Stand---By (anti---freeze
protection activaded)
Boiler waiting for heat request.
Boiler in winter mode.
The primary circuit temperature is
displayed.
Boiler on demand for c.h. power.
Burner ignition (spark)
Flame present (Burner on)
Boiler in anti---freeze phase (bP
flasching + temperature flashing)
Boiler in antifrost phase (AF
flasching + temperature flashing)
Set c.h.
(all other symbols are disabled)
Pump activated for the post ---cir-
culation phase (Po flashing +
temperature flashing)