Problem | Probable Causes |
| Corrective Action |
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| A. If available, substitute a controller | |||||||
| A. Controller has failed. |
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| known to be working for the | ||||||||
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| suspect controller. | If the substitute | ||||||||
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| controller functions correctly, order | |||||||
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| a new controller. |
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| B. If the circuitry in the fryer control | |||||||
Fryer does not heat. |
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| system cannot determine the frypot | |||||||
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| temperature, the system will not | ||||||||
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| B. One or more other components have | allow the element to be energized | ||||||||||
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| failed. |
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| is already energized. | If | the | ||||||
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| contactor, | element, or | associated | |||||
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| wiring fails, the element will not | |||||||
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| energize. |
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| In fryers equipped with Thermatron | |||||||
Fryer repeatedly |
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| controllers, | burners | cycle | on | ||||
cycles on and off when | Fryer is in |
| approximately 5 seconds and off for | |||||||||
first started. |
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| 15 seconds until the temperature | |||||||
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| reaches 66°C (150°F). |
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| If available, substitute a controller | |||||||
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| known to be working for the suspect | |||||||
Fryer heats until high- |
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| controller. | If | the | substitute | controller | |||
Temperature probe | or | controller | has | functions | correctly, | order | a | new | ||||
limit trips with heat | ||||||||||||
failed. |
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| controller. | If | the | substitution of | the | ||||
indicator ON. |
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| controller does not resolve the | ||||||||
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| problem, the most likely cause is a | |||||||
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| failed temperature probe. |
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| If available, substitute a controller | |||||||
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| known to be working for the suspect | |||||||
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| controller. If the substitute controller | |||||||
Fryer heats until high- | Contactor, element | or | controller | has | functions | correctly, | order | a | new | |||
controller | from | FASC. | If | the | ||||||||
limit trips without | ||||||||||||
failed. |
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| substitution of the controller does not | ||||||||
heat indicator ON. |
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| resolve the problem, the most likely | ||||||||
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| cause is a contactor that has failed in | |||||||
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| the closed position or an element that | |||||||
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| has failed. |
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| The fact that the heat indicator is ON | |||||||
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| indicates that the controller is | |||||||
Fryer stops heating |
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| functioning properly and is calling for | |||||||
The | heat. | The | ||||||||||
with heat indicator | functions as a normally closed switch. | |||||||||||
ON. | has failed. |
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| If the thermostat fails, the "switch" | |||||||
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| opens and power to the elements is | |||||||
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| shut off. If the contactor fails to close, | |||||||
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| no power is supplied to the elements. |