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P a g e
OPERATION
H
IGH
T
EMPERATURE
L
IMIT
A
CTIVE
A
LERT
If the oven chamber temperature exceeds the present high temperature limit setting, the limit
system will depower the heating element. This is accompanied by a loud “click.” The
controller display will flash two alternating alert screen, fail and the homepage with the set
point set to off. An illuminated “4” on the bottom-most display block indicates that the high
limit circuitry has depowered the heating element.
The high temperature limit activates if one of three events happens.
•
The high limit is set below or near the currently active temperature set point.
•
An outside temperature source or a heat source in the oven chamber is pushing
the oven temperature above the limit setting.
•
The main controller circuitry or sensor probe have failed and must be replaced in
order to maintain safe oven operations.
In the case of the latter two causes, the red oven chamber temperature will be higher than
the green set point. If you suspect an ignition event in the oven chamber or hardware failure,
turn off the oven and wait for the oven to cool to room temperature before opening
for assistance.
Restoring Heating
Perform the following steps to take the unit out of the protective heating cutoff once it is
safe to do so:
1.
Push the green Advance button until Ignore “i9nr” shows in the top display and
Limit High “Lih1” in the green display.
1.
Push the Advance button again.
•
Limit High Set Point “LhS1” will now show in the green display, and the High
Limit temperature setting in the red top display. The display will resume
alternating until you begin adjusting the limit setting.
2.
Adjust the limit setting to +5°C above the application set point using the Up Arrow
button.
a.
If the Limit was already set +5°C above the set point, raise the Limit to 6 or 7
degrees. Ambient temperature stability issues may be briefly pushing the
chamber temperature over the +5°C limit.
3.
Push the Reset button to save the new setting and return to the homepage.
4.
Monitor the oven to see if the high limit trips with the new, higher setting.
a.
Contact Technical Support if the high limit continues to cutoff heating to the
oven chamber.
Alternating HTL Alert
Screens
Summary of Contents for SMO5HP-2
Page 1: ...Installation Operation Manual SMO5HP 2 HIGH PERFORMANCE OVEN 220 240 Voltage...
Page 8: ...8 P a g e INTRODUCTION...
Page 12: ...12 P a g e RECEIVING YOUR UNIT...
Page 18: ...18 P a g e INSTALLATION...
Page 20: ...20 P a g e GRAPHIC SYMBOLS...
Page 22: ...22 P a g e CONTROL PANEL OVERVIEW...
Page 38: ...38 P a g e USER MAINTENANCE...
