Displaying The Appliance Selection; Switching The Pump On Or Off; Setting The Service Interval; Setting The Display Contrast - A.O. Smith GWV - 120 Installation And Service Manual

12
APPLIANCE HISTORY
BURNINGHOURS 000410
^IGNITIONS 001000
ÈFLAME ERRORS 000021
IGNIT ERROR 000013

12.5 Displaying the appliance selection

To display the appliance selection, use:
• : SELECT APPLIANCE
The appliance number can be found on the rating
plate.
The appliance selection has been correctly preset
in the factory.
SELECT APPLIANCE
»5934
^ 8576
È 3379
6527
2331
3908
2510
7767

12.6 Switching the pump on or off

If a program-controlled pump is
installed (3.10.4 "Connecting a program-controlled
pump") then this can be turned ON or OFF via:
• : PUMP RELAY
The standard setting for the pump is OFF.
PUMP RELAY
»ON
OFF
If the WEEK PROGRAM or EXTRA PERIOD modes
are active, then the setting for the WEEK PROGRAM or
EXTRA PERIOD modes takes priority over the
ON/OFF selection for the pump relay in the service
menu.
Example
One of the week program periods is 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.
70
Service program
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
appear. Adjust the service interval via:
•
SERVICE INTERVAL
» 500
^ 1000 BURNING HOURS
È 1500

12.8 Setting the display contrast

Set the display contrast as follows:
•
DISPLAY CONTRAST
12.9 Setting the display backlight switching
Set the backlight time (the time that the display
backlight remains lit after the last button is pressed) as
follows:
•
BACKLIGHT TIME

12.10 Setting the display scroll speed

Adjust the control speed via:
•
SCROLL SPEED
12.11 Setting the stage difference for the
Switching from partial load to full load is handled by
the electronic controller, using the stage difference.
This value is adjustable.
(8.4 "Service condition"). to this effect will
: SERVICE INTERVAL
: DISPLAY CONTRAST
The default setting is 100%. The range is 0 to
100%.
The figure shows the related display.
» 90 %
period
: BACKLIGHT TIME
The default value is 255 seconds. The range is 0
to 255 seconds.
The figure shows the related display.
» 255 sec
: SCROLL SPEED
The default is 10. The range is from 0 through 100.
Setting the value too high or low will make scrolling
difficult.
» 10
appliance
Instruction manual GWV
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