Baxi Slim 1.230 FiN User's And Installer's Manual page 26

QAA73: parameters settable by the installer (service)
When the two PROG keys are pressed simultaneously for at least three
seconds, it is possible to enter the list of parameters to display or to
modify by the installer.
Press one of the PROG keys to change the parameter to display or
modify.
Press [+] or [-] to modify the value displayed.
Press one of the PROG keys again to save changes.
Press the information key ( ) to exit programming.
The following section lists only the most commonly used parameters:
Line Parameter
70 HC1 Heating curve slope
72 HC1 Max. fl ow temperature
74 Type of building construction
75 Room infl uence
77 Adaptation of heating curve
78 Optimum start control maximum
forward shift
79 Optimum stop control maximum
forward shift
90 Reduced set-point of DHW temperature
91 DHW program
93 ECO function
Brief description of the above parameters:
Line Parameter
70 Selection of heating curve slope
72 Maximum temperature of central heating fl ow
74 Building insulation type settings
75 Activation/deactivation of the room temperature infl uence. If deactivated the
external sensor must be fi tted
77 Automatic adaptation of the heating curve according to the room temperature
78 Max. advance, referred to the hourly program, of the boiler switching on for the
room temperature optimization
79 Max.advance, referred to the hourly program, of the boiler switching off for the
room temperature optimization
90 ECO function – DHW temperature when the boiler is in OFF mode as programmed
in parameter 91.
91 Selection of the type of hourly program for DHW operation. Selection of DHW
PROG involves the setting of parameters 30÷36
93 Activation of ECO function. Set also parameter 90
Range Factory setting
2,5...40 15
25...85 85
Heavy, light
light
on HC1 on HC1
on HC2
on HC1+HC2
none
Inactive –active active
0...360 min 0
0...360 min 0
5...60 35
24 h/day 24 h/day
HC-1h PROG
PROG HC
PROG ACS
without ECO without ECO
with ECO
When the external probe is connected to the appliance, the selectable
curves are illustrated in graph here below.
TM = range of heating fl ow temperature
Te = external temperature
- fault indication
In case of faults, the QAA73 shows the fl ashing symbol
( )
Press information key
fault detected.
Code Display
10 External probe External sensor faulty or parameter 75 deactivated
20 Boiler probe
50 DHW probe
60 Room sensor
110 Boiler STB
133 No fl ame
151 BMU
160 Fan speed
162 Air pressure switch
164 Heating pressure switch
26
to display the code and the description of the
Fault description
Heating fl ow NTC probe faulty
DHW NTC probe faulty
QAA73 faulty
Safety thermostat operation
Gas supply failure
Boiler PCB error.
Switch-off the power supply of the boiler for 10 seconds
Fan speed threshold not reached
Air pressure switch does not commutate
Hydraulic pressure switch does not commutate
.