Solid State Control; Computer Control - Vulcan-Hart ERO15 Service Manual

SOLID STATE CONTROL

The following alarms take precedence over any other controller mode or function (except drain valve open).
ALARMS
If an open probe is detected, the heat demand (heat on) and basket lift outputs are
disabled. Any cooking in progress is cancelled and all operator buttons are disabled. The
OPEN PROBE
display shows Prob and the electronic alarm will sound continuously.
NOTE: A temperature of less than 40 / F is an open probe equivalent.
If a shorted probe is detected, the heat demand (heat on) and basket lift outputs are
disabled. Any cooking in progress is cancelled and all operator buttons are disabled. The
SHORTED
display shows HI and the electronic alarm will sound continuously.
PROBE
NOTE: A temperature of 460 / F or greater is a shorted probe equivalent.
If the temperature is greater than or equal to 415 / F, the heat demand (heat on) is
HI disabled. Any cooking in progress is cancelled and all operator buttons are disabled. The
TEMPERATURE display shows HI and the electronic alarm will sound continuously. Normal fryer operation
resumes when the temperature drops below the high temperature alarm level.
When drain valve is opened, the DVI switch contacts open, and the 24VAC input to the
controller is removed. The heat demand (heat on) and basket lift outputs are disabled.
Any cooking in progress is cancelled and all operator buttons are disabled. The display
DRAIN VALVE
will alternate between drn tUrn oFF for 3 seconds each in a continuos loop.
INTERLOCK
When the drain valve is closed, the DVI switch contacts close, and the 24VAC input to the
(DVI)
controller is restored. The heat demand (heat on) and all operator buttons will remain
disabled; and the display will alternate between tUrn oFF for 3 seconds each in a
continuos loop until power is cycled.

COMPUTER CONTROL

The following alarms take precedence over any other controller mode or function (except drain valve open).
ALARMS
If an open probe is detected, the heat demand (heat on) and basket lift outputs are
disabled. Any cooking in progress is cancelled and all operator buttons are disabled. The
OPEN PROBE
display shows PROBE OPEN and the electronic alarm will sound continuously.
NOTE: A temperature of less than 40 / F is an open probe equivalent.
If a shorted probe is detected, the heat demand (heat on) and basket lift outputs are
disabled. Any cooking in progress is cancelled and all operator buttons are disabled. The
SHORTED
display shows PROBE SHORT and the electronic alarm will sound continuously.
PROBE
NOTE: A temperature of 460 / F or greater is a shorted probe equivalent.
If the temperature is greater than or equal to 415 / F, the heat demand (heat on) is
HI disabled. Any cooking in progress is cancelled and all operator buttons are disabled. The
TEMPERATURE display shows HI TMP and the electronic alarm will sound continuously. Normal fryer
operation resumes when the temperature drops below the high temperature alarm level.
When drain valve is opened, the DVI switch contacts open, and the 24VAC input to the
controller is removed. The heat demand (heat on) and basket lift outputs are disabled.
Any cooking in progress is cancelled and all operator buttons are disabled. The display
DRAIN VALVE
will show DRAINING TURN OFF. If the filter prompt is active, DRAINING FILTER is
INTERLOCK
displayed; if the dispose prompt is active, DRAINING DISPOSE is displayed.
(DVI)
When the drain valve is closed, the DVI switch contacts close, and the 24VAC input to the
controller is restored. The heat demand (heat on) and all operator buttons will remain
disabled; and the display will show TURN OFF until power is cycled.
F35613 (September 2003)
ER SERIES ELECTRIC FRYERS - TROUBLESHOOTING
Page 42 of 48
DESCRIPTION
DESCRIPTION