Description
Viessmann 7828748 Linear Step Motor (CPK) – Motor Replacement
The Viessmann 7828748 linear step motor (CPK) is a precision actuator used within the boiler to control internal hydraulic components such as diverter or mixing valves.
Designed specifically for Vitodens 100-W series boilers, this motor ensures accurate movement and reliable switching between heating and domestic hot water.
Compatible Boilers
This part is compatible with the following models:
Vitodens 100-W WB1C
CB 19kW System – GC 41-819-26
CB 26kW Combi – GC 47-819-20
CB 26kW System – GC 41-819-27
CB 30kW Combi – GC 47-819-21
CB 30kW System – GC 41-819-28
CB 35kW Combi – GC 47-819-22
CB 35kW System – GC 41-819-29
Vitodens 100-W WB1HA (ErP)
19kW System – GC 41-819-36
26kW System – GC 41-819-37
30kW System – GC 41-819-38
35kW System – GC 41-819-39
Vitodens 100-W WB1HC
19kW System – GC 41-819-40
26kW System – GC 41-819-41
30kW System – GC 41-819-42
35kW System – GC 41-819-43
Vitodens 100-W WB1KC
26kW Combi – GC 47-819-40
30kW Combi – GC 47-819-41
35kW Combi – GC 47-819-42
Vitodens 100-W WBP JA
25kW Combi – GC 47-819-26
29kW Combi – GC 47-819-27
Vitodens 100-W WB1B
26kW Combi – GC 47-819-12
26kW System – GC 41-819-18
30kW Combi – GC 47-819-13
30kW System – GC 41-819-19
35kW Combi – GC 47-819-14
35kW System – GC 41-819-20
If you’re looking for a Viessmann Auto Air Vent 7828750 – Combi & System, follow the link provided.
Why Choose This Product?
This refurbished Viessmann step motor offers a smart solution for fixing gas-to-air ratio issues without replacing the full unit. Each motor goes through functional testing to ensure accuracy and durability. It improves combustion stability and helps your boiler stay energy efficient. With OEM-level quality and a 12-month warranty, this step motor offers peace of mind.
Delivery and Return
Place orders before 1 PM for same-day dispatch via reliable couriers. Choose from standard or next-day delivery options. Returns are accepted within 30 days if the part is unused and in original packaging. Always use a Gas Safe registered engineer for installation and warranty validation.
