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Burner anti-cycling symbol: pixel-style hourglass with bars at top and bottom and side posts, sand gathered in both halves
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Heating & air conditioning

Burner anti-cycling

Pixel-style hourglass with bars at top and bottom and side posts, sand gathered in both halves. · also called “anti-cycling”, “blocking time”, “burner wait”, “hourglass”

What it means on vaillant

Burner anti-cycling time

The burner is waiting before it may light again. This pause avoids switching on and off too often and lengthens the boiler's life; no action is needed.

Source · Manufacturer manual Vaillant ecoTEC plus VU 446/5-5 and VU 606/5-5 boiler operating instructions · checked

Where it appears

Heating & air conditioning

Questions about the Burner anti-cycling symbol

What does the Burner anti-cycling symbol mean on the Vaillant ecoTEC plus VU 446/5-5 and VU 606/5-5 boiler (VU 446/5-5)?
The burner is waiting before it may light again. This pause avoids switching on and off too often and lengthens the boiler's life; no action is needed.
What does the Burner anti-cycling symbol look like?
Pixel-style hourglass with bars at top and bottom and side posts, sand gathered in both halves. It is also called “anti-cycling”, “blocking time”, “burner wait” and “hourglass”.
Which products show the Burner anti-cycling symbol?
It is recorded on Vaillant ecoTEC plus VU 446/5-5 and VU 606/5-5 boiler (VU 446/5-5).

Checked against the source · · How we verify

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