Vulcan-Hart GR Series Service Manual page 35

GR Series Gas Fryers with NCC Controls (formerly Tridelta / Built after 3/05) - SERVICE PROCEDURES AND
SERVICE
SETTINGS
Press 6 to adjust the left and right display screen
settings. Refer to LCD display screen picture under
ENTER SERVICE SETTINGS MODE.
Press the left or right arrow key on control panel to
select the screen to adjust.
To adjust the selected screen:
• BACKLIGHT - Press toggle key to turn display
backlight ON or OFF.
6.) Display
• PIXEL MODE - Press product key number 1 two
times to change display from white background
with black letters to black background with white
letters. Press the key again to change it back to
original setting.
• CONTRAST - Press the L key on the keypad to
lower the contrast or press the R key on the
keypad to raise the contrast.
Exit Diagnostic Press PROGRAM Key to exit the selected
and Service DIAGNOSTICS test and return to Service Settings
Mode Mode.
1
NOTES:
Default values shown in bold.
Alarm Messages
ALARMS
PROBE FAULT
IGNITION STATUS
GAS -Selected under service
settings - Type.
IGNITION STATUS
GAS Selected incorrectly under
service settings - Type.
ADJUSTMENTS
KEY SEQUENCE
DESCRIPTION
If a temperature probe fault occurs, the alarm sounds continuously and the
display shows PROBE on the left display and either OPEN or SHORT on the
right display. This alarm state will remain until the fault clears or power switch
is cycled.
• OPEN - Probe detects temperature less than 40°F.
• SHORTED - Probe detects temperature greater than 460°F.
If the ignition status input is not present, both displays show IGNITION
LOCKOUT. If the input comes back in less than 8 seconds, the displays will
revert to normal operation.
If the input remains inactive for more than 90 seconds, IGNITION LOCKOUT
will be shown on the left display and CHECK GAS SUPPLY will be shown right
display, and the alarm will sound continuously. This alarm state will remain until
power switch is cycled.
After 20 seconds in normal operation mode, IGNITION LOCKOUT will be shown
on the left display and CHECK GAS SUPPLY will be shown right display, and
the alarm will sound continuously.
Enter SERVICE SETTINGS and select GAS* as the type.
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DISPLAY
ITEM
1
FLASHES
N/A
N/A
The alarms take precedence over any other controller
mode or function (outputs off, active timers canceled).
DESCRIPTION
THIS LCD SELECTED
SERVICE SETTINGS
(shown on display screen)
F35660 Rev. A (0717)