Bosch – Buderus – Junkers – Viessmann Combi Boiler 3-Way Valve Motor (Hole Type, DC 24V)

The 3-way valve motor used in Bosch, Buderus, Junkers and Viessmann combi boiler models is a critical actuator that switches the boiler between central heating and domestic hot water. Thanks to its hole-type stepper motor design, it moves the valve shaft precisely and in a controlled manner.

Operating on a DC 24V supply, this valve motor positions the 3-way valve according to signals from the boiler PCB, ensuring that the hot water and heating functions work correctly.

It is a spare part frequently replaced in service work for faults such as no hot water, radiators not heating, water constantly switching direction or a noisy valve motor.

Product Specifications

• Part Type: Combi Boiler 3-Way Valve Motor
• Motor Type: Stepper Actuator (Hole Type)
• Operating Voltage: DC 24V
• Connection Type: Plug-in socket
• Purpose: Central heating / hot water switching control

Compatible Brands

• Bosch
• Buderus
• Junkers
• Viessmann
• Wolf

Part Codes

• Bosch / Junkers: 87160113600
• Wolf: 2744516
• Viessmann: 7828748

Installation and Safe Use

Before installation, check that the hole type and socket design of the valve motor are compatible with the existing part. When making electrical connections, make sure the appliance is disconnected from power. For long and trouble-free use, installation by an authorized service or an experienced technician is recommended.