TurboChef Technologies TurboChef User Manual

Page 61

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ISSUE

RESOLUTION

F8: Heat Low

Oven Not Warming Up

1. Check that the blower motor is moving air.

Blower motor is not moving air: Check blower motor assembly

and verify motor is stalled. Unplug oven and correct obstruction or

replace motor. (For access to motor shaft, remove top panel.)

Blower motor is moving air: Verify high-limit thermostat is

not tripped. See the high-limit thermostat information below.

High-Limit Thermostat:

Thermostat tripped: Reset and determine why the thermostat

tripped (See Figure 38, Item 114). Look for excess build up of

grease inside the oven or any other source for a fire.

Thermostat is not tripped: Check main convection heater.

1. Convection heater is defective: Unplug oven and replace the

convection heater and verify the K4 SSR (Figure 37) is not

shorted across output.

2. Convection heater OK: Check the K4 SSR.

K4 defective: Unplug oven and replace.

K4 OK: Unplug oven and verify all wiring. Verify P1 voltage on

I/O board is 5.0VDC (+/- 0.02) - see Figure 40, page 54.

F2: Cook Temperature

Low

1. Verify Cook Door Operation.

“Cook Door Open” Message: Verify which switch is not actuating

and readjust. See pages 38-43.

Cook Door OK: Verify high-limit thermostat is not tripped. See

the high-limit thermostat below.