Wolf Hood Heat Sentry Blinking Blower LED: Overheat Protection Active

What Blower speed LED blinking (Heat Sentry) means

On Wolf CT wall and island hoods, CTE low-profile hoods, and Pro hoods such as the CTWH30 and CTWH36, a blinking blower speed LED means the heat sentry is active. When exhaust reaches 200F, the hood turns the blower on or steps its speed up, and it shuts off at 185F. The owner sees the LED blink and hears the fan start without pressing anything.

Common causes of Blower speed LED blinking (Heat Sentry)

Hot exhaust from heavy cooking reaching 200F
High burner use below the hood for a long time

✓ One safe check you can try

1. Let the hood run until the exhaust cools below 185F. 2. Turn down or turn off burners that are not in use. 3. Do not switch the hood off at the breaker while it is cooling. 4. Check that the grease filters are clean and seated so air flows well. 5. If it runs often with light cooking, call us.

! Why to stop there

This is normally a protective feature, so no repair is needed in the usual case.
Frequent triggering with light cooking could point to a heat sensing or airflow issue that needs checking.
We inspect, quote in writing first, and give a 30-day workmanship warranty.

Opening a panel yourself does not automatically cancel a manufacturer warranty, but it can cause accidental damage, and some manufacturers set their own service conditions. Check your warranty terms, or ask us, before deciding.

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Blower speed LED blinking (Heat Sentry)Blower speed LED blinking (Heat Sentry) questions

Is the blinking LED a failure?

No. It tells you the heat sentry is protecting the hood. Heat at the hood reached 200F, so the blower turned on or sped up until the exhaust drops to 185F.

Why does the fan start by itself?

That is the heat sentry doing its job. It needs no button press and cannot be overridden by the controls while the exhaust is hot. Once it cools, the hood stops running.

When should I worry about it?

If it triggers with only light cooking, or the fan does not start at all when the LED blinks, call us. We check the hood and give you the price in writing before any work.