Andrews Heater Air Pressure Switch (Aps)
The air pressure switch enables safety protocols which ensure the fan is working correctly. It ensures that, if the fan fails within the boiler, there would not be a build up of noxious fumes with no means of venting them. The PCB closely monitors the air pressure switch to make sure it is completely functional before the unit is fired up, preventing the appliance from starting without one of its key safety instruments.
ANDREWS AIR PRESSURE SWITCH CSC93
Part No: 1821417 / MPN: E632
ANDREWS C165AWH PRESS. DIFF. SWITCH R2000
Part No: 1821904 / MPN: C165AWH
ANDREWS E961 RFF AIR PRESSURE KIT HONEYWELL
Part No: 1821002 / MPN: E961
ANDREWS AIR PRESSURE SWITCH RFF 280 B SERIAL
Part No: 1820660 / MPN: E513