Worcester Air Pressure Switch 87161066330

Worcester Greenstar 87161066330

For use with the following Worcester boilers:

Worcester GREENSTAR 12I FSN NG
and Worcester GREENSTAR 12I FSP LPG
with Worcester GREENSTAR 12RI FON NG
plus Worcester GREENSTAR 12RI FSP LPG
fits Worcester GREENSTAR 15RI FON NG
and Worcester GREENSTAR 15RI FSP LPG
with Worcester GREENSTAR 18RI FON NG
plus Worcester GREENSTAR 18RI FSP LPG
fits Worcester GREENSTAR 24I FSN NG
and Worcester GREENSTAR 24I FSP LPG
with Worcester GREENSTAR 24I JUNIOR
plus Worcester GREENSTAR 24RI FON NG
fits Worcester GREENSTAR 24RI FSP LPG
and Worcester GREENSTAR 25SI FSN NG
with Worcester GREENSTAR 25SI FSP LPG
plus Worcester GREENSTAR 28I JUNIOR
fits Worcester GREENSTAR 30SI FSN NG
and Worcester GREENSTAR 30SI FSP LPG

The air pressure switch acts as a safety device that ensures the fan is fully operational.

It ensures that, if the fan fails within the boiler, there would not be a build up of toxic gasses with no means of venting them.

The PCB closely monitors the air pressure switch to make sure it is fully operational before the unit is fired up, preventing the appliance from starting without one of its key safety instruments.