Mark burner control unit SIT EFD 503 up to 2008: original Mark spare part, type: Burner control unit, EFD, EFD 503. Application: Warm air heating (D-Type 15). Manufacturer number: 0608058; Instalpunt article number: 8881004.
According to the Mark parts lists, this part fits 24 models, including Mark D-Type 15, Mark D-Type 20 and Mark D-Type 25. The full list is under “Fits”.
This item is in stock and usually arrives within 3–5 working days.
Check the rating plate of your appliance before ordering; if in doubt, ask the manufacturer or your installer. Work on gas-carrying parts must be carried out by a qualified gas engineer.


