Vaillant Ignition Transformer VCM 182 E Ref. 287450 (Acem 990010002)
Ignition transformer for Vaillant boiler, manufactured by Acem (Italy), with type code 990010002 printed on the label. It transforms the mains voltage of 230V to an output of 17.2V / 18.4VA on the secondary side, within the ignition circuit of the burner. Replacement requires first confirming the fault of the component through technical diagnosis, even when the boiler does not ignite and tests indicate a fault in this component rather than in the electrode or the PCB.
- Type of part
- Transformers
- Status
- Refurbished
- Catalogue reference
- 287450
- Warranty
- 1 year
Vaillant boilers compatible with reference 287450
Ignition transformer with reference 287450. 12 verified compatibilities: VMW ES 242/3 and VMW 242-3.
Proven compatibility
| Boiler model | Family | Verification |
|---|---|---|
| Vaillant VMW ES 242/3 | Vaillant Turbo Tec / Turbo Pro (VMW) | Contrasted |
| Vaillant VMW 242-3 | Vaillant Turbo Tec / Turbo Pro (VMW) | Contrasted |
| Vaillant VMW 242-5 | Vaillant Turbo Tec / Turbo Pro (VMW) | Contrasted |
| Vaillant VMW 240-5 | Vaillant Turbo Tec / Turbo Pro (VMW) | Contrasted |
| Vaillant VMW 282-5 | Vaillant Turbo Tec / Turbo Pro (VMW) | Contrasted |
| Vaillant VM 242-5 | Vaillant Atmo Tec / VM (heating only) | Contrasted |
| Vaillant VM 282-5 | Vaillant Atmo Tec / VM (heating only) | Contrasted |
| Vaillant VC 242 E | Vaillant VC / VCM (combi-compact) | Contrasted |
| Vaillant VCM 242 E | Vaillant VC / VCM (combi-compact) | Contrasted |
| Vaillant VCM 282 E | Vaillant VC / VCM (combi-compact) | Contrasted |
| Vaillant VMI 280-7 | Vaillant VMI | Contrasted |
| Vaillant VMI 282-7 | Vaillant VMI | Contrasted |
Can't see your model or have questions? The printed reference takes precedence. How to check it · Send us a photo via WhatsApp.
How to check if ref. 287450 is the part for your boiler
The part reference, model, and equipment revision must be verified against the manufacturer's documentation.
- Find the reference printed on the installed part and check whether it matches the catalogue reference 287450. If it is not visible, do not identify the part from its shape alone.
- Check the full boiler model on its data plate and look for it in the model associations on this page.
- Compare the connections and physical body with the original part before installation.
- If anything is unclear, send us a photo of the marking via WhatsApp before placing your order.
Symptoms that require diagnosis in the ignition transformer 287450
The ignition transformer generates the high voltage for the spark of the electrodes. These are the typical symptoms and what to do:
Common symptoms and faults
- 01
The boiler tries to ignite, but there is no spark and it quickly locks out.
Cause: The ignition transformer does not deliver the necessary current to generate the arc.
Measure with a multimeter if there is current at the transformer output while the boiler is trying to ignite.
- 02
The ignition is irregular: sometimes it starts well and other times it locks without a clear reason.
Cause: A damaged winding produces an unstable output that sometimes reaches the electrode with sufficient strength and other times does not.
Check that the transformer cables and connectors are securely attached and free of corrosion before considering it faulty.
- 03
There is a burnt smell or there are dark marks on the transformer casing.
Cause: The internal winding has overheated or short-circuited, losing its insulation.
Visually inspect the transformer for discoloration, swelling, or burnt smell.
Vaillant fault codes that require diagnosis
| Code | Fault | Technical checks |
|---|---|---|
| F.28 | Fault during start-up: the boiler fails to ignite the burner in the start-up phase. | The ignition transformer is part of the ignition system (transformer + cable + electrode); if the transformer fails, it does not generate the high voltage for the spark, and the boiler aborts the start-up without detecting a flame. Verify: measure the transformer's output voltage to the electrode and check for a spark at each start-up; if there is no spark and the wiring/electrode are fine, the transformer is the cause. |
| F.29 | The flame goes out during operation and re-ignition attempts fail. | The Vaillant service documentation explicitly lists "the ignition transformer has a spark fault" as the cause of F.29: if the transformer does not reignite after a flame failure, the lockout is triggered. Verify: check the spark generation of the transformer during ignition retries and rule out poor grounding, gas pressure, and condensate pipe before. |
These symptoms can have more than one cause. If your boiler displays a fault code, send it to us via WhatsApp along with a photo of the labeling, and we'll tell you if this is the part.
Vaillant 287450 ignition transformer datasheet
- Catalogue reference
- 287450
- Uniclima internal SKU
- TVCM182
- Brand
- Vaillant
- Type of part
- Transformers
- Units in stock
- 7 units
- Status
- Refurbished
- Warranty
- 1 year
- Shipping
- Delivery time shown at checkout
- Return
- 14 days
Part data and available documentation
Contrast the label codes, PCB, and revision with the installed part; they are not necessarily equivalent references.
- Manufacturer
- Acem (ACEM ITALY)
- Type code
- 990010002
- Primary voltage
- 230V (PRI 1-4)
- Primary current
- T-0.16A
- Secondary
- 17.2V / 18.4VA - T-1.25A (SEC 5-8)
- Frequency
- 50/60Hz
- Maximum temperature
- tR 70°C
Frequently asked questions about the ignition transformer 287450
Who manufactures the ignition transformer for the Vaillant VCM 182 E?
What voltage does this transformer provide on the secondary side?
Does this transformer work at 50 and 60 Hz?
What is the maximum temperature that the winding of this transformer can withstand?
Is this transformer suitable for a Vaillant VMI 282-7?
Spare parts related to Vaillant Turbo Tec / Turbo Pro (VMW)
