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A row of front-load commercial laundry machines in an on-premise laundry, their round glass doors closed and drums empty, a folding table and a stack of clean white towels beside them, nobody at the machines.

Middleby Marshall LongWave cooling fan message with a red LED

The LongWave monitors its cooling fan through a feedback signal.

(844) 571-4566

Mon–Sat, 8am–8pm

  • Motors and drives
  • Commercial laundry machine repair
  • Source: Middleby Marshall

Book a visit

Three short steps, about a minute.

or call (844) 571-4566

What FAN FAULT
actually means.

The LongWave monitors its cooling fan through a feedback signal. If the fan breaks or the feedback is lost, the screen names the fan and a red LED glows at the right-hand edge of the compartment. The oven keeps cooking unless the compartment then gets too hot, and the manual mentions a fan current calibration under the general settings.

Middleby Marshall commercial appliance display

What to do when FAN FAULT shows on the commercial appliance

Kind of codeMotors and drives

Something that should turn is not turning, or not at the speed the controller expects. A washer-extractor's drive or its inverter may stop the spin when the load is out of balance or a bearing drags, a tumbler's belt may slip so the drum barely moves, a convection or combi fan may slow on worn bearings and bake unevenly, and a dish machine's wash pump may hum without spraying. Redistributing a load, confirming the door is latched and running the machine's own test cycle are fair; a drum, a belt or a motor is a visit, and nobody reaches into a drum that could still move.

Usually leads toCommercial laundry machine repair

Coin, card and on-premise laundry machines and tumblers: door locks, bearings, inverters, burners and payment hardware.

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.

MakeMiddleby Marshall

Middleby Marshall ovens on this site are the kitchen's non-pizza baking and roasting work; pizza service calls belong to our pizza oven site.

SourceMiddleby Marshall LongWave LW26 and LW33 infrared conveyor oven owner's manual (Rev F)

Middleby Marshall LongWave LW26 and LW33 infrared conveyor ovens (manual Rev F).

Before you book,
in this order.

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

01

Keep cooking only while you watch for a high temperature message, which the oven would show next.

02

Clean the cooling fan filter and make sure the fan intake and exhaust are clear.

03

If your manager login allows it, run the fan current calibration in general settings as the manual suggests.

04

Book a visit if the red LED and the message stay after calibration.

Still there?

It usually turns into commercial laundry machine repair. Book with the code and the model number.

What not to do

This message does not stop the oven by itself, unlike the heat and belt alarms. It is also not the HIGH TEMP CHECK FANS message, which reports the heat that a failed fan eventually causes.

What you may
notice with it.

The commercial appliance problem FAN FAULT 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
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 FAN FAULT usually leads

Commercial laundry machine repair.

Laundry machine door lock, belt, bearings and seal, drain valve, inverter or motor; tumbler igniter, flame sensor, gas valve coil or airflow switch · moderate.
Book a visit What the job involves

Middleby Marshall
commercial appliances.

Middleby Marshall ovens on this site are the kitchen's non-pizza baking and roasting work; pizza service calls belong to our pizza oven site.

Middleby Marshall commercial appliance repair

More Middleby Marshall codes

IO_COMM_LOSTMC1_COMM_LOSTMC2_COMM_LOSTPROBE_TL_FAULTFAN_HIGH_CURRENTFAN LOW CURRENTMC1_HIGH_CURRENTLIMIT BOARD HIGH TEMPLIMIT BOARD PROBE FAULTIO BOARD HIGH TEMPCONTROL COMPARTMENT HIGH TEMPHIGH TEMP CHECK FANS
All 14 Middleby Marshall codes

Motors and drives on other makes

Alto-Shaam E03Blodgett Fan ErrorDexter F9Frymaster E25Garland E03Hatco Fan Is StoppedMiele Professional F78Rational Service 47.1
All 22 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. Middleby Marshall 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 Middleby Marshall's own words

The cooling fan is broken, or the feedback is broken.
Middleby Marshall LongWave LW26 and LW33 infrared conveyor oven owner's manual (Rev F) Middleby Marshall LongWave LW26 and LW33 infrared conveyor oven owner's manual (Rev F) Middleby Marshall LongWave LW26 and LW33 infrared conveyor oven owner's manual (Rev F)

Every code on this site is taken from the manufacturer's documentation, never from a forum or a parts listing. Middleby Marshall LongWave LW26 and LW33 infrared conveyor ovens (manual Rev F).

Middleby Marshall FAN FAULT 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 FAN FAULT.

Can I clear FAN FAULT myself?
Keep cooking only while you watch for a high temperature message, which the oven would show next. If it comes back, it needs a visit.
Why does my LongWave keep baking with the red fan LED on?
The manual lets it continue until the control compartment gets too hot. Use that time to clean the filter and arrange a visit.
What is fan current calibration on a Middleby Marshall LongWave?
A setting under general settings that teaches the control the normal current of the fan. It can clear a false alarm after a fan is replaced.
Is the LongWave red LED the same as a heating problem?
No. It concerns the electronics cooling fan only; cooking zones have their own messages.

Back to your everyday

Still showing FAN FAULT?

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
(844) 571-4566 Schedule a repair