V. QUICK REFERENCE: TROUBLESHOOTING

SYMPTOMPROBLEM

SECTION3-OPERATION

SOLUTION

light is lit, food product is

undercooked

Oven will not turn on at all

Oven shuts down shortly

after it is turned on

The oven temperature ex-

ceeded 650°F (343°C), and

 

the burner was automati-

 

cally shut down.

 

 

Electrical power may not be

reaching the oven, or the

controls may be set incor-

 

rectly.

 

 

The gas burner did not light

within 90 seconds of turn-

 

ing the "HEAT" (or

)

Switch to the “ON” (or "I")

 

position. This automatically

 

engages a safety lockout

 

mode.

 

Follow the procedures under Daily Shutdown Procedures in

 

this section to shut down the oven. Contact your Middleby

ENGLISH

Check that the "BLOWER" (or ) Switch is in the “ON” (or "I")

Marshall Authorized Service Agent to determine and correct the

 

cause of the condition to prevent damage to the oven.

 

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

 

position. The burner cannot engage until the blowers are in

 

operation.

 

Turn the "HEAT" (or ), "BLOWER" (or ), and "CONVEYOR"

 

(or

)switches to the "OFF" (or "O") position.

 

Wait for AT LEAST FIVE MINUTES before restarting the oven. Repeat the Daily Startup procedure.

The oven did not reach 200°F (93°C) within 15 min- utes of startup, and the oven has stopped heating.

appears in display, oven is not heating

Oven will not heat

Controls may be set incor-

 

rectly.

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 jammed

jerky motion, or will not

on an object in the oven, or

move at all

conveyor belt or drive chain

 

tension may be incorrect.

Turn the "HEAT" (or), "BLOWER" (or ), and "CONVEYOR"

(or )switches to the "OFF" (or "O") position.

Wait for AT LEAST FIVE MINUTES before restarting the oven.

Repeat the Daily Startup procedure.

Check that the Set Point is correctly set.

Check that both the "BLOWER" (or ) and "HEAT" (or ) Switches are in the “ON” (or "I") position.

If the oven still will not heat, turn the "HEAT" (or), "BLOWER"

(or ), and "CONVEYOR" (or)switches to the "OFF" (or "O") position.

Wait for AT LEAST FIVE MINUTES before restarting the oven.

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 reassem- bling 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.

Food products are

Controls may be set incor-

• Check that the set temperature and bake time settings are

overcooked or

rectly.

correct.

undercooked.

 

 

IF THESE STEPS FAIL TO RESOLVE THE PROBLEM, CONTACT YOUR LOCAL MIDDLEBY MARSHALL AUTHORIZED SERVICE AGENT. A SERVICE AGENCY DIRECTORY IS SUPPLIED WITH YOUR OVEN.

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Middleby Marshall PS360WB, PS360Q Quick Reference Troubleshooting, Oven will not heat Controls may be set incor Rectly

PS314, PS310, PS360S, PS360Q, PS360 specifications

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