Rayburn Programmer Kit R4178 St6400C1037 St9400C 480K Mx

Rayburn Programmer Kit R4178 St6400C1037 St9400C 480K Mx

Aga/Rayburn

Honeywell Programmer Kit

Pre. M11-006

Rayburn 440k, 460k, 480k & 499k

Includes: 

• R6032 Programmer

• R3947 Chassis

• R5419 Bracket

• R3940 Fascia Panel

Rayburn Programmer Kit R4178 – ST6400C / ST9400C for 480K MX Burners (Part No: R4178)
Reliable Heating Control for Rayburn 480K MX Systems

The Rayburn Programmer Kit R4178 is a complete, genuine replacement programmer kit designed for use with Rayburn 480K oil-fired boilers equipped with MX or MX/E burners. Compatible with Honeywell models ST6400C1037 and ST9400C, this kit offers precise, user-friendly control of your heating and hot water schedules. Ideal for upgrading faulty or outdated programmers, the R4178 helps restore accurate time control and energy-efficient heating operation.

Key Features:

• Complete Programmer Kit – Includes everything needed to replace or upgrade your existing time control

• Genuine Rayburn Part – Manufactured and approved for use with 480K MX burner systems

• Dual Channel Control – Independently schedules heating and hot water

• User-Friendly Interface – Clear LCD display with intuitive controls

• Flexible Scheduling – 7-day or 5/2-day programmable options (depending on model supplied)

Compatible With:

• Rayburn 480K Oil-Fired Cookers & Boilers

• For use with:

  • Honeywell ST6400C1037 or ST9400C programmers

  • MX and MX/E burner systems fitted in Rayburn 400/480K appliances
    (Always check compatibility with your burner model and wiring setup before purchasing.)

When to Replace the Programmer:

• If experiencing:

  • Inconsistent heating or hot water scheduling

  • Unresponsive or blank display

  • Burner not firing at programmed times

• During burner or control system upgrades

• As part of routine servicing when timer becomes unreliable or damaged

Tip: A faulty programmer can reduce heating efficiency or cause burner lockouts. Replacing it ensures accurate and dependable time control.

Technical Specifications:

• Part Number: R4178

• Included Programmer Models: ST6400C1037 or ST9400C (model may vary depending on supply)

• Voltage: 230V AC

• Channels: 2 (Heating & Hot Water)

• Display: Digital LCD with backlight

• Mounting: Surface mount or backplate (included)

• Programming Options: 24-hour, 5/2-day, or 7-day depending on model supplied

• Battery Backup: Maintains settings during power cuts