TROUBLESHOOTING
Del uxe Contr ol Cook & Hold ▪ Ser vic e Manua l ▪ MN- 4671 2 ▪ R ev 01 ▪ 1 1/ 20
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High Limit Alarm
Reset the high limit for the corresponding cavity.
Does the alarm clear?
No
Test the oven to make sure the
cavity is not overheating. See
Troubleshooting Tree for
Overheating scenario if necessary.
Yes
Remove power to the oven. Disconnect the wires on
terminals 21 and 22 of the high limit. Measure
continuity across the terminals of the high limit. Do
you have continuity?
No
Reset the high limit again. If
pressing the red reset button does
not close the internal switch
between terminals 21 and 22, the
high limit is faulty. Replace the high
limit and retest the oven.
Yes
Reconnect the wires to the high limit at terminals 21
and 22. Disconnect the J9 connector on the control
board. Measure continuity between the wires for the
corresponding cavity’s high limit. Do you have
continuity?
No
Inspect wiring from high limit to the
control board. Repair any damaged
wires and re-install the J9 connector.
Retest.
Yes
Re-install the J9 connector to the control board and
cycle power to the oven. Do you still have a high limit
alarm?
No
The oven should be operating
properly now.
Yes
Check dipswitch 2 on the control board. If the oven is
a single cavity unit, dipswitch 2 should be off. If the
oven is a double cavity unit, dipswitch 2 should be on.
Are the dipswitch settings correct?
No
Replace the control board.
Yes
Correct the dipswitch setting and cycle power to the
oven. Do you still have a high limit alarm?
No
The oven should be operating
properly now.
Yes
Replace the control board.
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