SECTION 3

OPERATION

V. QUICK REFERENCE: TROUBLESHOOTING

SYMPTOM

light is lit, food product

is undercooked

Oven will not turn on at all

PROBLEM

The oven temperature exceeded 650°F (343°C), and the burner was auto- matically shut down.

Electrical power may not be reaching the oven, or the controls may be set incorrectly.

SOLUTION

Follow the procedures under DAILY SHUTDOWN PROCEDURES to shut down the oven. Contact your Middleby Marshall Authorized Service Agent to deter- mine and correct the cause of the condition to prevent damage to the oven.

Check that the circuit breaker/fused disconnect is turned on.

Check that the BLOWER Switch is in the “ON” position. The burner cannot engage until the blowers are in operation.

Oven shuts down

The gas burner did not

shortly after it is

light within 90 seconds of

turned on

turning the HEAT Switch

 

to the “ON” position. This

 

automatically engages a

 

safety lockout mode.

Turn the HEAT switch to the “OFF” position.

Wait for 60 seconds.

Repeat the Daily Startup procedure.

 

The oven did not reach

 

200°F (93°C) within 15

 

minutes of startup, and

appears in display,

the oven has stopped

oven is not heating

heating.

Oven will not heat

Controls may be set in-

 

correctly.

Oven is operating, but

Air fingers may have been

little or no air is blowing

reassembled

incorrectly

from air fingers

after cleaning.

Conveyor moves with a

Conveyor

may be

jerky motion, or will not

jammed on an object in

move at all

the oven, or conveyor belt

 

or drive chain tension may

 

be incorrect.

 

Food products are

Controls may be set in-

overcooked or

correctly.

 

undercooked.

 

 

Turn the BLOWER Switch to the “OFF” position.

Wait for 30 seconds.

Repeat the Daily Startup procedure.

Check that both the BLOWER and HEAT Switches are in the “ON” position.

If the oven still will not heat, turn the BLOWER Switch to the “OFF” position.

Wait for 30 seconds.

Repeat the Daily Startup procedure. Check that the Set Point is above 200°F (93°C).

Turn the oven off, and allow it to cool. Disconnect electrical power to the oven.

Refer to Section 4, Maintenance, for instructions on reassembling the air fingers.

Turn the oven off, and allow it to cool. Disconnect electrical power to the oven.

Check if the conveyor is blocked by an object inside the oven.

Refer to Section 4, Maintenance, for instructions on checking the conveyor and drive chain tension.

Check that the set temperature and bake time settings are correct.

IF THESE STEPS FAIL TO RESOLVE THE PROBLEM, CONTACT YOUR LOCAL MIDDLEBY MARSHALL AUTHORIZED SERVICE AGENT.

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Middleby Marshall PS360WB installation manual Quick Reference Troubleshooting, Symptom, Problem, Solution

PS360, PS360WB specifications

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