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Frymaster Fryer Codes & What They Mean

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Many deep fryers from Frymaster utilize a digital readout systems, allowing users to program timed frying and holding cycles as well as error readouts. Whether you’re looking to access a boil out code, set temperatures or diagnose an issue, we have Frymaster error codes for 3000 Controllers and CM III.5 computers.

Frymaster 3000 Controller Error Codes & Messages

Below is a full breakdown of fryer codes and error message that appear on Frymaster units with 3000 Controller computers.

Error Code

Error Message

What Does it Mean?


Code E01


REMOVE DISCARD (Right)


The code displays when cooked food that starts on the right portion of a split or full vat has a different setpoint from the current vat temperature.


Code E02


REMOVE DISCARD (Left)


The code displays when cooked food that starts on the left portion of a split or full vat has a different setpoint from the current vat temperature.


Code E03


ERROR TEMP PROBE FAILURE


This appears if the temperature probe reading is out of range.


Code E04


HI 2 BAD


This appears if the high limit reading is out of range.


Code E05


HOT HI 1


The code indicates that the high limit temperature is more than 410 degrees Fahrenheit (210 degrees Celsius). In CE countries, it triggers when it’s more than 394 degrees Fahrenheit (202 degrees Celsius).


Code E06


HEATING FAILURE


This displays when the controller, interface board, contactor, open high limit or another component in the high limit circuit fails.


Code E07


ERROR MIB SOFTWARE


The error code appears when there is an internal MIB software error.


Code E08


ERROR MIB SOFTWARE


The error code appears when there is an internal MIB software error.


Code E09


ERROR PUMP NOT FILLING


This displays if a filter pad is dirty and needs to be changed or the filter pump is not working properly.


Code E10


ERROR DRAIN VALVE NOT OPEN


The code appears when the drain valve attempted to open and confirmation is missing.


Code E11


ERROR DRAIN VALVE NOT CLOSED


The code appears when the drain valve attempted to close and confirmation is missing.


Code E12


ERROR RETURN VALVE NOT OPEN


The code appears when the return valve attempted to open and confirmation is missing.


Code E13


ERROR RETURN VALVE NOT CLOSED


The code appears when the return valve attempted to close and confirmation is missing.


Code E14


ERROR AIF BOARD


This error code shows when the MIB indicates the AIF is missing or AIF board has failed.


Code E15


ERROR MIB BOARD


This indicates that cooking controller finds that MIB connection are lost or there the entire MIB board has failed.


Code E16


ERROR AIF PROBE


The error code appears if the AIF RTD reading is out of range.


Code E17


ERROR ATO PROBE


The error code appears if the ATO RTD reading is out of range.


Code E19


M3000 CAN TX FULL


This shows if the connection between computers is lost. If a computer displays only M3000 software, the computer may be defective.


Code E20


INVALID CODE LOCATION


The code displays if the SD card was removed during an update.


Code E21


CHANGE FILTER PAPER or FILTER PAD PROCEDURE ERROR


The error code appears with the first message when the filter pad needs to be changed. It displays with the second message if the 25-hour timer expired or dirty filter logic kicks on. Change the filter pad and follow the corresponding prompts on the fryer.


Code E22


OIL IN PAN ERROR


This shows if oil is present in the filter pan or the MIB has rest the “oil-in-pan” flag.


Code E23


CLOGGED DRAIN (gas models only


The code appears if the fryer vat didn’t empty during filtration process.


Code E24


AIF BOARD OIB FAILED (gas models only)


This displays if the oil back sensor failed.


Code E25


RECOVERY FAULT


The error code shows when recovery time exceeded the maximum time limit (1:40 for electric, 2:25 for gas).


Code E26


RECOVERY FAULT CALL SERVICE


This appears if the recovery time exceeds the maximum limit for two or more cycles. Contact an authorized service technician immediately to resolve the issue.


Code E27


  • Error message 1 – LOW TEMP ALARM
  • Error message 2 – HIGH TEMP ALARM
  • The code displays if the oil temperature has dropped below the setpoint in idle mode by 30 degrees Fahrenheit (17 degrees Celsius) or below the setpoint in cook mode by 45 degrees Fahrenheit (25 degrees Celsius).
  • The code displays if the oil temperature has risen by 40 degrees Fahrenheit (4.4 degrees Celsius). If temperature continues rising, the high limit feature will shut off the burner when temperature hits 425 degrees Fahrenheit (218 degrees Celsius) or 395 degrees Fahrenheit (202 degrees Celsius) on CE fryers.

Additional Frymaster Code Help

If an error code has appeared and you've taken the necessary steps to fix the issue but it's still persistent, it may be time to further troubleshoot the problem with your Frymaster fryer. Troubleshooting can help you identify the issue and how to either correct it yourself or inform an authorized service technician. 

Frymaster CM III.5 Error Codes, Boil Out & Recovery Time

The CM III.5 can be affected by electrical storms or fluctuations in electric current. If your computer isn’t functioning properly, try to reset it by unplugging it and plugging it back in.

Fryer Codes

  • PROB – The Frymaster PROB code means the fryer has a failed temperature probe or a failed controller. Either way, you will have to call Frymaster.
  • HOT – If you see this error, turn the fryer off immediately and call Frymaster. This warning indicates a frypot temperature above 410F. It is very likely the oil in the vat has been ruined from this high temperature.
  • HELP – The Frymaster HELP code will display if there’s a heating problem with your fryer. Be sure to turn the fryer off and contact Frymaster.
  • CALL TECH – This means the memory chip or its support circuit has failed, and, you guessed it, you need to call Frymaster.

Boil Out

If you’re just looking for a code to initiate the boil out feature, read on. But first, make sure you know the procedure. Frymaster has created a series of helpful videos to walk you through the boil out process, whether you have a unit that will automatically begin or an older unit that has a specific temperature setting for boil out. Of course, it is also advisable that you have a copy of your Frymaster manual to make sure you have the correct procedure before you begin.

Recovery Time

The recovery time is the amount of time your fryer takes to increase the temperature from 275 to 325 degrees Fahrenheit after product is added (which lowers the temperature in the fryer). This number is automatically monitored by the Frymaster CM III.5 computers to help you determine whether your fryer is heating efficiently. To view the recovery time of your fryer, press the Program Mode button (the one with the checkmark) and “CODE” should appear. Enter the code 1652, and the recovery time will appear for 5 seconds.

Frymaster Fryer Boil Out Code

Boiling out an important part of your fryer's preventative maintenance and cleaning schedule. Many Frymaster fryer models will require a code to be input to start a boil out. A common code that can be used is "1653." You can input this when programming the controller for a Boil Feature. Before trying to program or start a boil out though, make sure you consult your model's specific operations manual.

Need more info and instructions? Check out our collection of Frymaster manuals for more help.

Please contact a factory authorized service agent who can help with these specific units and all your commercial kitchen equipment needs.

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