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Pressure Switch

Pressure Switch Spare Parts


What Is An Air Pressure Switch?

The air pressure switch in a boiler ensures that waste gases are being expelled, before allowing to fire up. The fan creates a draft which allows harmful gases to be released from the boiler via the flue.

The reasons A Boiler’s pressure switch is failing.

It’s important to be aware of that any air flow issue will cause a air pressure switch to not allow the boiler to fire.

Commons reason a boiler will not fire:

  1. A Blocked Flue
  2. Faulty Fan
  3. Broken PCB

The air pressure switch notices the pressure differential isn’t great enough then it shuts off the boiler.

If your switch won't turn on, this might be a sign your tank pressure is above your switch's cut-in pressure. Try running some water elsewhere in the building to reduce pressure below the cut-in level. You can also try gently tapping on the pressure gauge, the switch, and the tank.