TROUBLESHOOTING
De lux e Control Cook & Hold ▪ Service Manu al ▪ MN -46 712 ▪ Rev 01 ▪ 11 /20
49
The Oven does not Heat
WARNING: Electric shock and arc flash hazard.
Use caution when measuring line voltage.
Wear Personal Protective Equipment (PPE).
Is the cavity sensor temperature below the cavity set
temperature?
No
Test Cavity Sensor: 100±2Ω at 32°F
Outside Tolerance: Replace Sensor
Within Tolerance: Re-install
connection
Yes
On the control board, measure 12VDC between J11
pins 1 and 2 (upper / single cavity) or J11 pins 3 and 4
(lower cavity)?
No
Replace the control board.
Yes
Is there 12VDC at the coil of the SSR A (+) to A (-) for
upper/single cavity or B (+) to B (-) for lower cavity?
No
Inspect the wiring between the coil
of SSR and connector J11 on control
board. Inspect and repair
connections and wiring as needed.
Yes
Is there L1 voltage at A1 (upper/single cavity SSR) or
B1 (lower cavity SSR)? Measure in reference to a
known N/L2
No
Inspect the wiring between A1/B1
and the circuit breaker/on-off power
switch (300-TH). Inspect and repair
the connections and wiring as
needed.
Yes
Is the SSR closing?
No
Replace the SSR.
Yes
Is there L1 voltage at terminal 11 of the high limit for
upper/single cavity or terminal 31? Measure in
reference to a known N/L2
No
Inspect the wiring between A2 or B2
terminal of the SSR to the high limit.
Inspect and repair the connections
and wiring as needed.
Yes
Is there line voltage between one side of the heat
cable to the other?
No
Inspect and repair the connections
and wiring as needed.
Yes
Remove power to unit and check the resistance of the
heat cables. With the heat cables isolated and
jumpers removed, is each individual cable wrap
reading 42Ω?
No
Replace heat cable kit for the
corresponding cavity.
Yes
If the heat cables have resistance and are receiving
line voltage from one side to the other, they should
be drawing a current and heating.
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