The open lower front of a cold commercial deck oven in a pizzeria, the pizza oven's burner tube and small pilot assembly visible under the deck, the gas control knob set to off, nobody near the gas.

Middleby Marshall Combustion Blower problem: the burner's air supply is in question

The PS640 gas oven has two kinds of blower: the main blowers that bake and a burner blower that supplies combustion air.

(844) 747-3662

Mon–Sat, 8am–8pm

  • Ignition and flame
  • Pizza oven burner and igniter repair
  • Source: Middleby Marshall

Book a visit

Three short steps, about a minute.

or call (844) 747-3662

What Combustion Blower problem
actually means.

The PS640 gas oven has two kinds of blower: the main blowers that bake and a burner blower that supplies combustion air. The screen alert shows Main Blower problem or Combustion Blower problem, and for either the manual says the computer has detected a blower issue that a qualified technician should correct.

Middleby Marshall pizza oven display

What to do when Combustion Blower problem shows on the pizza oven

Before you book,
in this order.

Each step comes from Middleby Marshall's own guidance for Combustion Blower problem on its pizza ovens. Follow it to the end: the last card says whether this is a visit.

01

Turn the oven off; a burner that cannot get proper air should not keep running.

02

Keep the area around the oven's air openings clear and do not remove any panels.

03

Book a visit; if you notice a gas smell at any point, close the gas supply, leave and call the gas utility from outside.

Still there?

It usually turns into pizza oven burner and igniter repair. Book with the code and the model number.

What not to do

This alert is not about the main baking air; that version reads Main Blower problem. It is also different from RESET IGNITION on the X-Series, which reports the flame itself.

Where Combustion Blower problem usually leads

Pizza oven burner and igniter repair.

Pizza oven burner cleared or replaced, spark electrode, hot-surface igniter or spark module · low to moderate.

In Middleby Marshall's own words

either the main, or burner
Middleby Marshall PS640 series gas oven owner's operating and installation manual (60251 Rev J) Middleby Marshall PS640 series gas oven owner's operating and installation manual (60251 Rev J)

Every code on this site is taken from the manufacturer's documentation, never from a forum or a parts listing. PS640 series gas ovens (owner's operating and installation manual 60251 Rev J), Screen Alerts table.

Middleby Marshall Combustion Blower problem 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 areas
A family sliding a pizza into a wood-fired pizza oven on a sunny patio.
For the heart of your home.

Questions
about Combustion Blower problem.

Can I clear Combustion Blower problem myself?
Turn the oven off; a burner that cannot get proper air should not keep running. If it comes back, it needs a visit.
What is the combustion blower on a Middleby Marshall PS640?
It is the burner blower that supplies air to the gas flame, separate from the main blowers that push baking air through the fingers.
Can I restart my PS640 after a Combustion Blower problem alert?
The manual does not offer a reset for this alert and sends it straight to a qualified technician. Leave the oven off and book a visit.
Could a combustion blower issue cause a gas smell?
A burner without the right air can burn poorly. Any gas smell means closing the supply, leaving the room and calling the gas utility from outside.

Back to your everyday

Still showing Combustion Blower problem?

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.

(844) 747-3662 Schedule a repair