🔌 Nibe 418857 Single-Pole Switch – ON/OFF (C1500AT, 250V AC)

Single-pole ON/OFF rocker switch designed for control of circulation pump operation in compatible Nibe heat pump units. This switch allows service engineers or users to toggle between automatic circulation control and manual ON mode for specific heating scenarios or diagnostics.

🔧 Product Specifications:

• Nibe Part Number: 418857

• Model Reference: C1500AT

• Type: Single-pole switch (SPST)

• Switch Function: ON / OFF

• Voltage Rating: 250V AC

• Application: Circulation pump control

✅ Compatible With:

• Nibe F200P

• Nibe F205P

This switch is located on the control board or pump housing, providing a manual override for the circulation pump — ideal during maintenance, system bleeding, or in specific heating configurations that require temporary manual flow.

🔄 Functionality:

• AUTO Position: Circulation pump operates based on system tempreture and demand

• ON Position: Forces circulation pump to run continuously (manual override)

🛠️ Typical Use Cases:

• During system startup or service to purge air from radiators

• As a diagnostic tool to test circulation pump function

• To maintain continuous heating in legacy control scenarios