A.O. Smith 120 through 250 Series - Manual (Page 68)

Service program
68 Instruction manual BFC
12
is
12.4 Displaying the appliance history
The appliance history submenu is used to display the
burning hours, the number of ignitions, the number of
flame errors and the number of ignition errors.
Call up the menu for displaying the appliance history
as follows:
•
: APPLIANCE HISTORY
The figure shows an example.
12.5 Display the selected appliance
Call up the menu for displaying the appliance selection
as follows:
•
: SELECT APPLIANCE
The appliance number can be found on the rating
plate.
The appliance selection has been correctly preset
in the factory.
12.6 Switching the pump on or off
If a program-controlled pump is
installed
(3.10.6 "Connecting a program-controlled
pump") , it can be switched ON or OFF as follows:
• : PUMP RELAY
The standard setting for the pump relay is OFF.
If the mode WEEK PROGRAM or EXTRA PERIOD is
active, then the setting for mode WEEK PROGRAM or
EXTRA PERIOD
has priority over the ON/OFF
selection for the pump relay in the service menu.
Example
One of the week program periods is currently active.
During this period, the pump relay setting is OFF. If the
pump relay is set ON in the service menu, the pump
will nonetheless remain OFF. The pump will only
switch ON once the week program period has ended.
12.7 Setting the service interval
To aid servicing, the electronic controller includes a
service interval which is used to set the frequency of
maintenance interval
(14.2 "Determining service
interval") by the service and maintenance engineer,
based on the number of burning hours.
The service interval is based on the number of burning
hours. This can be set to 500, 1000 and 1500 hours.
The standard setting for number of hours is 500. Once
the preset number of hours is reached, a
message
(8.4 "Service condition") . to this effect will
appear. Adjust the service interval via:
•
: SERVICE INTERVAL
12.8 Setting the display contrast
Adjust the display contrast via:
•
: CONTRAST DISPLAY
The standard setting is 100%. The range is from 0
through 100%.
The figure shows the related display.
12.9 Setting the display backlight time
Set the backlight time (the time that the display
backlight remains lit after the last button is pressed) as
follows:
•
: TIME BACKLIGHT
The standard value is 255 s. The range is 0 to 255
seconds.
The figure shows the related display.
12.10 Setting the display scroll speed
Adjust the control speed via:
•
: SCROLLSPEED
The default is 10. The range is from 0 through 100.
Setting the value too high or low will make scrolling
difficult.
APPLIANCE HISTORY
BURNINGHOURS 000410
^IGNITIONS 001000
ÈFLAME ERRORS 000021
IGNIT ERROR 000013
SELECT APPLIANCE
»5934
^ 8576
È 3379
6527
....
PUMP RELAY
»ON
OFF
SERVICE INTERVAL
» 500
^ 1000 BURNING HOURS
È 1500
CONTRAST DISPLAY
» 95 %
TIME BACKLIGHT
» 255 sec
SCROLLSPEED
» 10