Also referred to as a pressure differential switch, it is designed to act as a safety instrument which checks if the fan is running correctly, the air pressure switch connects to the Fan via heat resistant tubes which go directly onto the fan Venturies. Through these, it enables the boiler to detect when the fan is running to ensure that if the fan fails there would not be a build-up of toxic fumes with no way of venting them, A signal would then be sent to the printed circuit board telling the boiler to stop sending gas to the burner and preventing the boiler from turning on.

Ravenheat Air Pressure Switch 0005PRE06006/0

Part: 0005PRE06006/0

Price: £49.95
Chaffoteaux 571652-01 Air Pressure Switch

Part: 571652-01

Price: £53.81
Main Air Pressure Switch Kit 5111610

Part: 5111610

Price: £27.82
Alpha 1.012849 CB 50 Air Pressure Switch

Part: 1.012849

Price: £52.36
Alpha 1.8396 Air Pressure Switch

Part: 1.8396

Price: £45.00
Ideal 173236 Mini He Air Pressure Switch

Part: 173236

Price: £78.96
Main Air Pressure Switch 5110393

Part: 5110393

Price: £24.84
Potterton 5111408 Control Unit

Part: 5111408

Price: £461.42
Glowworm Air Pressure Switch 0020064058

Part: 0020064058

Price: £39.31
Saunier Duval S202135 Air Pressure Switch

Part: S202135

Price: £49.95
Ideal Air Pressure Switch 112328

Part: 112328

Price: £110.57
Main Air Pressure Switch 5105867

Part: 5105867

Price: £63.36
Main Pressure Switch 642223

Part: 642223

Price: £56.57
Vokera 5926 Air Pressure Switch

Part: 5926

Price: £39.95
Main Pressure Switch 230068

Part: 230068

Price: £41.95
Ariston 60081725-01 Air Pressure Switch

Part: 60081725-01

Price: £69.13
Potterton Air Pressure Switch 5112197

Part: 5112197

Price: £24.84
Heatline D003200136 Compact Air Pressure Switch

Part: D003200136

Price: £61.17
Potterton Pressure Switch 248466

Part: 248466

Price: £14.23
Potterton Pressure Switch Kit 5111609

Part: 5111609

Price: £28.46
Alpha 6.5629560 240, 280 Air Pressure Switch

Part: 6.5629560

Price: £40.00
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