Professional Repair & Servicing of DUNGS W-FM25 02 V2.0 Weishaupt Electronic Fuel/Air Ratio Controller

Professional repairing, servicing, inspection and troubleshooting service for the DUNGS W-FM25 02 V2.0 electronic burner control unit used in compatible Weishaupt burner and combustion-control systems.

This listing is for a REPAIR & SERVICING SERVICE ONLY. A new DUNGS W-FM25 controller is NOT included. Customers send their existing faulty controller for inspection, diagnosis and repair where technically feasible.

Supported Controller

Manufacturer	DUNGS / Karl Dungs GmbH & Co. KG
Application	Weishaupt Burner Systems
Model / Type	W-FM25 02 V2.0
Product Type	Electronic Burner / Fuel-Air Control Unit
Supply Voltage	230V AC
Frequency	50/60Hz
Rated Power	14W
Order Number	278620
Service Type	Repair, Inspection, Troubleshooting & Servicing

Repair & Servicing Scope

The service can include professional inspection and diagnosis of the controller followed by component-level repair where the fault and condition of the unit make repair technically feasible.

• Initial visual inspection
• Electronic fault diagnosis
• Power-supply section inspection
• PCB and electronic component inspection
• Connector and terminal inspection
• Inspection for damaged or overheated components
• Inspection for corrosion or contamination
• Component-level repair where practical
• Replacement of defective serviceable electronic components where available
• Post-repair electrical and functional testing where applicable

Common Faults We Can Evaluate

• Controller does not power on
• Intermittent operation
• Burner controller communication or control faults
• Power-supply related faults
• Damaged electronic components
• Burnt or overheated PCB components
• Age-related electronic failures
• Connector or internal connection problems
• Controller malfunction requiring electronic diagnosis

Service Process

1. Send Your Faulty Unit: Customer sends the existing DUNGS W-FM25 02 V2.0 controller for evaluation.
2. Inspection & Diagnosis: The unit is inspected to identify the likely electronic fault and overall repairability.
3. Repair Assessment: Required components and repair work are determined.
4. Repair & Servicing: Repairable electronic faults are corrected and defective serviceable components replaced as required.
5. Testing: The repaired unit is checked and tested to the extent possible before return.
6. Return: The serviced controller is returned to the customer for installation and final commissioning on the burner system.

Important Safety Information

The DUNGS W-FM25 is associated with burner and combustion-control equipment. Repair of the electronic controller does not replace the manufacturer's required burner safety checks, commissioning procedures or combustion adjustments.

After repair, installation and final commissioning should be performed by a qualified burner/combustion technician. Safety interlocks, flame supervision, fuel valves, air/fuel positioning, combustion values and other applicable burner safety functions must be verified before the equipment is returned to normal operation.

Important Service Conditions

Repairability cannot be guaranteed before inspection. Units with severe PCB damage, unavailable proprietary components, damaged processors/memory, extensive corrosion, fire damage or other non-repairable faults may not be economically or technically repairable.

Any programming, parameterization, calibration or burner-specific configuration required after installation should be performed according to the applicable Weishaupt/DUNGS service documentation by qualified personnel.

Service Only – No Controller Included

This product listing is for repairing and servicing your existing controller only. It does not include a new or replacement DUNGS W-FM25 02 V2.0 controller. The customer must provide the faulty unit to be serviced.