Middleby Marshall CLEAN FILTERS: the cooling fan filters are clogged
Cooling fans keep the control compartment of a Middleby Marshall conveyor from overheating, and they breathe through filters that catch flour and grease.
Mon–Sat, 8am–8pm
- Blowers and airflow
- Pizza oven blower and fan repair
- Source: Middleby Marshall
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What CLEAN FILTERS
actually means.
Cooling fans keep the control compartment of a Middleby Marshall conveyor from overheating, and they breathe through filters that catch flour and grease. On the PS638 the message reads CLEAN FILTERS; on the PS640 gas oven it appears as High Control Compartment Temperature. Middleby Marshall warns that ignoring it will eventually shut the oven down.
Middleby Marshall pizza oven display · also shown as High Control Compartment Temperature
What to do when CLEAN FILTERS shows on the pizza ovenKind of codeBlowers and airflow
The air the oven bakes with is not moving as it should. In a conveyor or rapid-cook oven the impingement blower may be dragging on worn bearings, its fingers packed with grease so the jets fire unevenly, or its cooling fan clogged with flour dust until the controls overheat; a gas oven may also refuse to light when its combustion air switch never proves. Cleaning the intake filters and grilles with the oven off is safe; a blower that slows, squeals or smells hot is a visit.
Usually leads toPizza oven blower and fan repair
Impingement blowers, cooling fans, bearings, belts and air fingers repaired or replaced, so hot air reaches every lane of the pizza oven evenly.
Shows up asPizza Oven Error Code on a Deck, Conveyor or Rapid-Cook Display
A pizza oven error code shows as letters or numbers on the display of a conveyor, deck or rapid-cook oven, a flashing light on its panel, or a message about ignition, heat, belt or airflow.
MakeMiddleby Marshall
A Middleby Marshall conveyor call is about the line: how many pies came out right before the belt slowed, stalled or the crust went pale.
SourceMiddleby Marshall PS638 electric and gas oven owner's operating and installation manual (74617 Rev G)
PS638 (74617) prints CLEAN FILTERS; PS640 gas (60251 Rev J) prints High Control Compartment Temperature and asks for the front fan filters.
Before you book,
in this order.
Each step comes from Middleby Marshall's own guidance for CLEAN FILTERS on its pizza ovens. Follow it to the end: the last card says whether this is a visit.
Remove and clean the cooling fan filters, at the rear on the PS638 and at the front on the PS640, following the cleaning section of the manual.
Replace any filter that is torn or will not come clean.
Put the filters back before running the oven, and book a visit if the message stays with clean filters.
Still there?
It usually turns into pizza oven blower and fan repair. Book with the code and the model number.
What not to do
CLEAN FILTERS does not refer to the baking air or the fingers; those are cleaned separately. If the fans themselves have stopped, the message becomes CONTROL OVERTEMP.
What you may
notice with it.
The pizza oven problem CLEAN FILTERS tends to arrive with. Answer these at the pizza oven before anyone is booked.
All problems
Where CLEAN FILTERS usually leads
Pizza oven blower and fan repair.
Middleby Marshall
pizza ovens.
A Middleby Marshall conveyor call is about the line: how many pies came out right before the belt slowed, stalled or the crust went pale.
Middleby Marshall pizza oven repairMore Middleby Marshall codes
Blowers and airflow on other makes
All 3 codes of this kind
In Middleby Marshall's own words
Cooling Fan Filters are clogged.
Every code on this site is taken from the manufacturer's documentation, never from a forum or a parts listing. PS638 (74617) prints CLEAN FILTERS; PS640 gas (60251 Rev J) prints High Control Compartment Temperature and asks for the front fan filters.
Middleby Marshall CLEAN FILTERS pizza oven 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 areasTampa BayFL · 31 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
Questions
about CLEAN FILTERS.
Can I clear CLEAN FILTERS myself?
Where are the filters that CLEAN FILTERS refers to?
What happens if I ignore CLEAN FILTERS on a Middleby Marshall?
How often should the cooling filters be cleaned?
Back to your everyday
Still showing CLEAN FILTERS?
A booking with a code goes further when it has the code copied as shown, the model and serial from the rating plate, and a note on whether the oven still lights, heats or moves its belt. With those three, the office can match the likely part to your oven the same day.