3 2 T RO U B L E S H O OT I N G

Troubleshooting:

F7: RTD FAULT

Replace the RTD

 

 

 

 

 

YES

(page A-8).

 

 

 

 

 

 

 

 

 

 

 

 

Open the right end bell.

Is the RTD damaged or defective (page 22)?

NO

Is the RTD connected properly to the I/O control board (pages 37-40)?

NO

YES

Is the RTD open? Using an ohmmeter, measure at the control board (pages 37- 40). RTD should measure approximately 100 W at 32°F (0°C) See page 22 for ohm/temperature chart.

 

 

 

 

 

 

 

 

 

YES

 

 

Correct wiring

 

 

 

 

(pages 37-40).

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Replace the I/O NO control board

(page A-8).

Troubleshooting:

F8: HIGH LIMIT TRIPPED

YES

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Are all the contacts

Is the high limit thermostat

 

 

 

 

 

 

 

closed on the high

 

NO

 

 

tripped (page 21)?

 

 

 

 

 

 

 

limit thermostat?

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Reset and determine why it tripped - over temp, blower failure, etc.

Check if the high limit probe or RTD is damaged or defec- tive, replace if needed (page A-8).

YES

Replace the I/O control board (page A-8).

Is the wiring correct (pages 37-40)?

NO

Correct wiring (pages 37-40).

YES NO

Replace the high limit thermostat (page A-6).

Page 52
Image 52
Turbo Chef Technologies 2020 manual A-8 Open the right end bell, Replace the I/O no control board A-8

2020 specifications

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