The control strip on the front edge of a stainless chimney range hood, one small timer symbol lit beside the fan keys, steam fading above the burners below.

BEST WPP1 speed 4 flashing and stuck on speed 3: Heat Sentry is protecting the hood

On the WPP1, Heat Sentry reacts to excess heat inside the hood by taking the blower off speed 4 for 10 minutes and holding it at speed 3.

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  • Mode, not a failure
  • No repair needed
  • Source: BEST

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What Speed 4 button flashing, speed 3 lit
actually means.

On the WPP1, Heat Sentry reacts to excess heat inside the hood by taking the blower off speed 4 for 10 minutes and holding it at speed 3. During that time speed 4 flashes and speed 3 stays lit. The same device can start the blower during a fire on the burners even if the hood was off.

BEST range hood display · also shown as Heat Sentry on WPP1, speed 4 will not select

What to do when Speed 4 button flashing, speed 3 lit shows on the range hood

Before you book,
in this order.

Each step comes from BEST's own guidance for Speed 4 button flashing, speed 3 lit on its range hoods. Follow it to the end: the last card says whether this is a visit.

01

Look under the hood for flames; if a pan is burning, turn off the burner, cover it with a lid and leave it, never use water, and leave and call 911 if fire spreads into the hood or cabinets.

02

Otherwise reduce the heat and let the hood run at speed 3 for the 10-minute period.

03

If you must stop the blower, BEST says to do it from the main electrical panel, since the blower button will not.

04

If speed 4 keeps flashing on light cooking, book a visit to check the heat device and the airflow.

Cleared?

The code is gone and the blower pulls steam up on every speed again without a new part. If it returns this week, or the filter reminder keeps coming back right after a cleaning, mention it in the booking.

What not to do

This is not a failed speed-4 motor winding, since the blower returns to speed 4 after the protective period. A speed light that flashes after you pressed delay-off is the timer, not Heat Sentry.

What you may
notice with it.

The range hood problems Speed 4 button flashing, speed 3 lit tends to arrive with. Answer these at the range hood before anyone is booked.

All problems

No repair indicated

Nothing to repair.

The hood is doing something it was told to do, not wearing out: a delay-off timer that keeps the blower running for some minutes after the burners go off, a heat sentry that starts the fan by itself when it senses a hot pan, a Sabbath setting that locks the keys and dims the lights, or a link to the cooking surface that sets the speed on its own. No part is needed; a key sequence from the manual, or simply waiting, ends it.

In BEST's own words

only speed 3 can be used; the speed 4 button will flash while the speed 3 button will light up.
BEST WPP1 series chimney hood installation instructions BEST WPP1 series chimney hood installation instructions

Every code on this site is taken from the manufacturer's documentation, never from a forum or a parts listing. WPP1 series chimney hoods with the four-speed push-button control and the IQ Blower System.

BEST Speed 4 button flashing, speed 3 lit range hood 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.

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A family cooking together under a stainless range hood in a bright kitchen.
For the heart of your home.

Questions
about Speed 4 button flashing, speed 3 lit.

Can I clear Speed 4 button flashing, speed 3 lit myself?
Look under the hood for flames; if a pan is burning, turn off the burner, cover it with a lid and leave it, never use water, and leave and call 911 if fire spreads into the hood or cabinets.
Why can't I use speed 4 on my BEST WPP1?
Heat Sentry has blocked it for 10 minutes after sensing high heat inside the hood. Speed 3 remains available and speed 4 returns afterward.
Is a flashing speed 4 on the WPP1 dangerous?
It means the hood got very hot, so check for flame first. If the cooking is under control, it is a protective pause rather than a breakdown.
How do I switch off a BEST WPP1 during Heat Sentry?
The blower button will not do it. BEST says to turn the power off at the main electrical panel if the blower has to stop.

Back to your everyday

Still showing Speed 4 button flashing, speed 3 lit?

Three things make the booking useful: the letters or blink pattern exactly as they showed, the full model number from the label behind the filters, and whether the fan still moves air on every speed. With those, the technician arrives with half the answer already worked out.

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