Frymaster FilterQuick with FQ3000 controller (FQE30 / FQG30)

Touch controller on FilterQuick gas and electric fryers. It stores the last ten errors in an error log, shown A to J with time and date.

What it is: Fryer controller

Error codes ↓
Enter service mode ↓

Frymaster FilterQuick with FQ3000 controller (FQE30 / FQG30) error codes

Code	Meaning	Likely cause	What to do
E03	Temperature probe failure	Probe reading out of range	Check the probe and its wiring.
E04	HI 2 BAD	High-limit reading out of range	Check the high-limit sensor.
E05	HOT HI 1	High limit passed about 210 °C (202 °C on CE units)	Let it cool; find why it overheated.
E06	Heating failure	Controller, interface board, contactor, gas valve, ignition module or open high limit	Work through the heat circuit.
E07	MIB software error	Internal fault on the filtration board	Power cycle; update or replace the MIB.
E08	ATO board error	MIB lost the auto top-off board	Check the connection and ATO board.
E09	Pump not filling	Filter pad dirty, skipped, or pump problem	Change the pad; check the pump.
E10 / E11	Drain valve not open / not closed	Valve position not confirmed	Check the drain valve actuator and switch.
E12 / E13	Return valve not open / not closed	Valve position not confirmed	Check the return valve actuator and switch.
E14	AIF board error	MIB cannot see the AIF board	Check wiring; replace the board.
E15	MIB board error	Controller lost the MIB	Check wiring; replace the MIB.
E16 / E17	AIF / ATO probe out of range	RTD fault	Check the probe.
E20	Invalid code location	SD card pulled out during an update	Redo the update.
E21	Change filter paper	24-hour timer ran out	Change the paper.
E22	Oil in pan	Oil may be in the filter pan	Empty the pan.
E23	Clogged drain (gas)	Vat did not empty while filtering	Clear the drain.
E24	Oil level sensor failed (gas)	Sensor fault	Check the sensor.
E25	Recovery fault	Took too long to heat back up	Check heat system.
E26	Recovery fault, call service	Two or more recovery failures	Service call.
E28	High temperature alarm	Oil more than about 4 °C (40 °F) over set point	Check probe and heat control.
E70 / E71	Oil quality sensor: oil too hot / too cold	Oil outside about 149–191 °C when filtering	Filter at normal frying temperature.
E72 / E73	TPM reading too low / too high	Fresh oil or wrong oil type set / oil worn out	Check oil type; dispose of spent oil.
E74 / E76	OQS internal or communication error	Sensor fault or loose connection	Check connections; power cycle the whole battery.
E75	OQS air error	Air getting into the sensor	Check O-rings and the prescreen filter.

How to enter service / parameter mode

From OFF, press the check (✓) key until INFO MODE changes to MAIN, then PRODUCT SETUP.
Scroll to VAT SETUP and press ✓. Enter the vat-setup access code (from the manual).
Scroll to E-LOG and press ✓. NOW shows the current time, then errors A–J. Scroll through them.
Press Exit/Scan three times to return to OFF.

Other useful key presses

Task	How
Clear error log	Service menu → Clear E-Log
High-limit test	Technician only: it ruins the oil.

Notes

If E-LOG shows No errors, nothing has been logged.
The product and vat setup access codes can be changed in Change Password; ask the site for theirs.

For licensed technicians only. This equipment can involve mains voltage, high-voltage microwave circuits, gas and refrigerant. Isolate power (and gas) before opening panels, follow the manufacturer's manual and your local licensing rules (for example ARC refrigerant handling and electrical or gas licences). Wrong settings can spoil food or damage equipment. Check every value on the unit in front of you before changing it.

Based on: Frymaster FQ3000 controller manual. Always check the manual for your exact model and software version.

ServiceModes is not affiliated with Frymaster or any other manufacturer. Written in our own words from the manufacturer's documentation.