Morco CH Low Pressure Switch FCB1480

The CH Low Pressure Switch is a Morco Products component that monitors pressure in the central heating circuit of the appliance and signals the control board when the sensed pressure falls outside the required range. It is listed under Morco part number FCB1480, with the manufacturer code N63G000M2. It is used across the Morco FEB range of gas boiler appliances.

• The appliance fails to fire or locks out despite the system being filled to normal pressure.
• A low pressure fault is indicated on the appliance, but gauge or filling loop checks show correct pressure.
• The boiler runs intermittently, cutting out and restarting without an obvious pressure change.
• The switch shows no change in continuity when system pressure rises or falls.
• Fault persists after the heating circuit has been correctly pressurised and air removed.

• Confirm the appliance model is listed in the Fits section above.
• Check the part number on the existing switch and match it against FCB1480 or N63G000M2.
• Verify the central heating pressure reading at the appliance before assuming the switch is at fault.
• Check the wiring connections and harness plug to the switch are secure and undamaged.