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A stainless sandwich prep table on a restaurant line, the prep table's lid raised over a row of covered food pans, a probe thermometer standing in one pan, nobody at the table.

Frymaster E18: oil passed 460°F and the high limit did not open

The controller shows HIGH LIMIT PROBLEM together with DISCONNECT POWER.

(844) 571-4566

Mon–Sat, 8am–8pm

  • Temperature and alarms
  • Reach-in and prep table repair
  • Source: Frymaster

Book a visit

Three short steps, about a minute.

or call (844) 571-4566

What E18
actually means.

The controller shows HIGH LIMIT PROBLEM together with DISCONNECT POWER. Both the primary control and the mechanical backup have failed to stop the heat, so nothing inside the fryer can be trusted to limit oil temperature. Frymaster's instruction is to remove power from the fryer immediately.

Frymaster commercial appliance display · also shown as HIGH LIMIT PROBLEM DISCONNECT POWER, HIGH LIMIT FAILURE, HELP HI-2

What to do when E18 shows on the commercial appliance

Kind of codeTemperature and alarms

The controller has seen a temperature outside the band it was set for and is saying so: a box above its alarm point, a fryer vat or an oven cavity that tripped its high-limit, or a dish machine rinse that never came up to heat. Often the cause sits outside the unit, such as a door left open during a delivery, a coil packed with grease, a kitchen far hotter than the maker allows or a booster fed cold water. Checking the door, the coil and the air around the unit is fair; move the product if a cold box stays above 41°F, and book the visit.

Usually leads toReach-in and prep table repair

Reach-ins, pass-throughs, prep tables and blast chillers: gaskets, hinges, fans, thermostats, condensers and compressors.

Shows up asCommercial Appliance Error Code on a Combi, Fryer, Dish Machine or Laundry Display

A commercial appliance error code appears as letters or numbers on a combi, fryer, reach-in controller, dish machine or laundry machine display, or as a flashing light or an alarm tone.

MakeFrymaster

A Frymaster fryer is serviced cold: the visit waits until the oil has come down and the vat has been drained by the crew.

SourceFrymaster FilterQuick FQG30U easyTouch gas fryer manual with FQ4000 controller (error log codes, section 5.6)

FQ4000 easyTouch touchscreen controller on FilterQuick fryers (FQG30U and related FilterQuick gas and electric models). The M3000 high-limit test shows HIGH LIMIT FAILURE alternating with DISCONNECT POWER when the second high limit fails to open.

Before you book,
in this order.

Each step comes from Frymaster's own guidance for E18 on its commercial appliances. Follow it to the end: the last card says whether this is a visit.

01

Switch the fryer off and then cut its power at the breaker or unplug the cord if it can be reached safely and without leaning over hot oil.

02

Clear the area, keep the Class K extinguisher and the hood suppression pull ready, and call 911 at the first sign of flame.

03

Tag the fryer out of service so nobody restarts it, and book a visit; it must not run again until both safety stages are repaired.

Still there?

It usually turns into reach-in and prep table repair. Book with the code and the model number.

What not to do

E18 is not a probe reading issue that can be waited out like E13; it reports real, extreme heat plus a failed safety. Nor does it match E17, where the backup switch opened correctly.

What you may
notice with it.

The commercial appliance problems E18 tends to arrive with. Answer these at the commercial appliance before anyone is booked.

All problems

Before you call

Commercial Appliance Error Code on a Combi, Fryer, Dish Machine or Laundry Display

All 8 causes, cheapest first

It also comes with

Close view of the dark touch control panel on the front of a stainless combi oven in a commercial kitchen, one abstract amber warning indicator glowing among unlit icons, the steam-fogged glass door blurred beside it. Problem

Commercial Appliance Error Code on a Combi, Fryer, Dish Machine or Laundry Display

8 causes, cheapest first

Where E18 usually leads

Reach-in and prep table repair.

Reach-in, pass-through or prep table gasket, hinge, fan motor, thermostat or controller, defrost heater, leak repair or compressor · moderate.
Book a visit What the job involves

Frymaster
commercial appliances.

A Frymaster fryer is serviced cold: the visit waits until the oil has come down and the vat has been drained by the crew.

Frymaster commercial appliance repair

More Frymaster codes

E13E16E17E19E25E28E33E39E41E42E44E53
All 15 Frymaster codes

Temperature and alarms on other makes

Alto-Shaam E13Beverage-Air HiBlodgett Cavity High Temp ErrorCleveland RESET lightContinental Refrigerator HIDelfield HiGarland E04Hatco Control Board Overtemp
All 68 codes of this kind
A working restaurant cooking line under a stainless ventilation hood, two stainless gas fryers with baskets hanging above the oil, a flat griddle and a combi oven with a glass door beside them, the equipment clearly the subject, a cook seen only from behind and shoulders down at the far end of the line, warm kitchen light, small blue flames visible under the griddle. Frymaster builds this

Commercial cooking equipment

Fryers, griddles, charbroilers, restaurant ranges, convection and combi ovens, steamers, kettles, holding cabinets and toasters, on gas or electric, that make up the hot side of a kitchen line.

In Frymaster's own words

Vat temperature exceeds 460°F (238°C) and
Frymaster FilterQuick FQG30U easyTouch gas fryer manual with FQ4000 controller (error log codes, section 5.6) Frymaster FilterQuick FQG30U easyTouch gas fryer manual with FQ4000 controller (error log codes, section 5.6) Frymaster Manual LOV M3000 controller operation manual, 02/2025 (E-log error codes)

Every code on this site is taken from the manufacturer's documentation, never from a forum or a parts listing. FQ4000 easyTouch touchscreen controller on FilterQuick fryers (FQG30U and related FilterQuick gas and electric models). The M3000 high-limit test shows HIGH LIMIT FAILURE alternating with DISCONNECT POWER when the second high limit fails to open.

Frymaster E18 commercial appliance repair,
where we come out.

The same visit in every metro below: the code, the model number, and a diagnosis before any part is ordered.

All service areas

Tampa BayFL · 31 areas

OrlandoFL · 30 areas

Miami / South FloridaFL · 47 areas

New York MetroNY · 75 areas

HoustonTX · 36 areas

ChicagoIL · 50 areas

Los AngelesCA · 95 areas

San DiegoCA · 31 areas

San Francisco Bay AreaCA · 74 areas

A restaurant team working a busy commercial kitchen line.
For the heart of your home.

Questions
about E18.

Can I clear E18 myself?
Switch the fryer off and then cut its power at the breaker or unplug the cord if it can be reached safely and without leaning over hot oil. If it comes back, it needs a visit.
Is E18 on a Frymaster an emergency?
Yes. The oil is far above frying heat and the safety that should have stopped it did not, so treat the vat as a fire risk until it has cooled and power is off.
Can we finish service on the other Frymaster vats after an E18?
Only if the other vats are on separate controls and power and are reading normally. The vat that logged E18 stays off and tagged until a technician has replaced what failed.
What usually fails to cause a Frymaster E18?
It takes two failures at once: something kept feeding heat, such as a stuck contactor or gas valve, and the mechanical high limit did not open. The visit covers both.

Back to your everyday

Still showing E18?

A booking with a code goes further when it has the code as shown, the model and serial from the data plate, and a word on whether the unit still holds temperature, heats, rinses or spins. With those three, the office can match the likely part to your unit the same day.

Schedule a repair Call (844) 571-4566
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