1.10.4 Troubleshooting the Thermostat

Turn the fryer on and

set the thermostat control knob to the maximum setting.

 

 

Does the

Yes

Is the

Yes

Thermostat is OK.

 

 

thermostat properly

 

 

burner light?

 

 

 

calibrated?

 

 

 

 

 

 

 

 

 

 

No

 

No

 

 

 

 

 

 

 

 

Probable cause is

Yes

Is 24VAC

 

Probable cause is

 

 

present at the gas

 

 

 

a failed gas valve.

 

a failed thermostat.

 

 

 

valve?

 

 

 

 

 

 

 

 

 

No

While it is still hot, inspect the thermostat body for damage. Inspect leads for fraying, burning, breaks, and/or kinks. Replace thermostat if it is bent, dented, or cracked, or if leads are damaged.

Thermostat has

 

 

 

No

failed.

 

 

 

Probable cause

is a break or short No in the wiring.

Allow the cooking oil/shortening to cool to at least 15 degrees below the thermostat setting.

Remove the leads from the terminal block and check continuity.

Is continuity

OK (resistance is

zero)?

Yes

Replace the leads

in the terminal

block.

Is resistance

of wire from terminal

block to gas valve

zero?

Thermostat and

Yes associated wiring are OK.

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Image 39
Frymaster 45 Series manual Troubleshooting the Thermostat