Applies to:

Troubleshooting E-1 Frypot Protection System (FPS)

The Frypot Protection System (FPS) is an option for PFG 600 models with C8000 controls. Units fitted with a second temperature probe and special "Dry Fire Detection" software generate this error when the fryer is fired with significantly low oil or no oil at all. It detects this by seeing a delta (offset) of at least 140°F between the main temperature probe and the extra FPS probe.

In all heating modes, the controller monitors the two temperature probes and continually analyzes whether or not the observed heating characteristics are putting the frypot at risk. The controller's mission is:

to protect the frypot by shutting down the heat when certain conditions are observed.
to alert the user to the fact that there appears to be insufficient oil in the frypot.

It takes several "pulses" of heat before the E-1 "LOW OIL" error code is generated. When the E-1 error is generated, a special error tone, different from the normal error siren, sounds. A series of 32 fast beeps (approx. 8 beeps per second) sound. Then, the controller asks "IS POT FILLED?" / "1=YES 2=NO".

Pressing the #1 button instructs the controller to resume heating.
Pressing the #2 button results in a message "TURN OFF UNTIL FILLED".
Pressing any other button silences the error beeps and the "E1 LOW OIL" part of the message. The "IS POT FILLED?" display continues until the user acknowledges by pressing the #1 button.
If the fryer is turned off during an "E1" error code display, the controller activates the normal "IS POT FILLED?" prompt at the next power up.

In all cases, the fryer will not resume heating until the user presses the #1 button in response to the "IS POT FILLED?" prompt.

E-1 Possible Causes:

Firing the fryer with low oil level or empty frypot.
Faulty main temperature probe.
Temperature probe not properly located in the frypot leading to abnormally low temperature readings.