Transformer Baxi Roca RS 20/20 F ZAG 2V Best Nr. 07000065
The Roca RS 20/20 F ZAG transformer 2V Best Nr. 07000065 generates the spark needed to ignite the burner of the boiler. If it fails, the boiler will attempt to start unsuccessfully, which can lead to ignition lockouts with fault codes such as 12 or 60-70-90. This component is compatible with models such as the R 20/20 F and the RS 20/20 T, among others from the Roca R / NR and Roca RS / RSI ranges. A technician must confirm through diagnosis whether it is necessary to replace it when the boiler experiences ignition problems or recurring lockouts.
- Type of part
- Transformers
- Status
- Refurbished
- Catalogue reference
- 122155360
- Warranty
- 1 year
Baxi Roca boilers compatible with reference 122155360
Ignition transformer with reference 122155360. Six verified compatibilities: NR 15/20 and R 20/20.
Proven compatibility
| Boiler model | Family | Verification |
|---|---|---|
| Baxi Roca NR 15/20 | Baxi Roca R / NR (gas) | Contrasted |
| Baxi Roca R 20/20 | Baxi Roca R / NR (gas) | Contrasted |
| Baxi Roca R 20/20 F | Baxi Roca R / NR (gas) | Contrasted |
| Baxi Roca RS 20/20 F | Baxi Roca RS / RSI | Contrasted |
| Baxi Roca RS 20/20 T | Baxi Roca RS / RSI | Contrasted |
| Baxi Roca RSI 20/20 | Baxi Roca RS / RSI | 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. 122155360 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 122155360. 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 122155360
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 loses power in a specific electrical function, while the rest continues to operate normally.
Cause: This transformer powers a specific circuit of the boiler; if it fails, it cuts off power to that part and not to the others.
Before changing it, locate in the diagram of your model which element it is connected to.
- 02
The boiler operates intermittently: sometimes it starts up fine, and other times it stops halfway.
Cause: A transformer with damaged winding provides an unstable voltage, causing intermittent faults.
With a multimeter, measure the output voltage of the transformer during several starts and check if it varies significantly.
- 03
You notice the transformer casing is hotter than usual, or a slight burning smell near it.
Cause: A transformer that starts to fail consumes more than it should and heats up more than usual.
Turn off the boiler, let it cool down, and visually check for any dark marks or the smell of burnt plastic.
Fault codes Baxi Roca that require diagnosis
| Code | Fault | Technical checks |
|---|---|---|
| 12 | Ignition lockout. Check for gas or spark absence. | If the ignition transformer is faulty, it does not generate a spark at the electrodes; the boiler does not detect a flame during the start-up time and locks with 12. Check by supplying power to the transformer (≈230 V) and verifying that it delivers high voltage to the electrodes or that there is an audible/visible spark. |
| 60-70-90 | Ignition lockout (gas or spark may be missing). | In models with LED signalling (RS), a faulty ignition transformer prevents sparking; the unit interprets a start-up fault and displays 60-70-90. Check for spark and measure/supply the transformer; if it does not deliver high voltage, replace it. |
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.
Data sheet for the Baxi Roca ignition transformer 122155360
- Catalogue reference
- 122155360
- Uniclima internal SKU
- TCRS2020F
- Brand
- Baxi Roca
- 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.
- Model
- ZAG 2V
- Best Nr. Code
- 07000065
- Power (Pzu)
- 3 VA
- Maximum temperature
- +85 °C
- Voltage
- 220-240 V
- Frequency
- 50-60 Hz
- Standard
- DIN DVGW 93.02f142
- Connections
- PE, N, L
Manuals and technical documentation
Official documentation of the boiler, useful for locating the part and cross-referencing the fault codes.
- Baxi Roca RS 20/20 F manual (PDF)Document © Baxi Roca, provided as a technical reference.
Frequently asked questions about the ignition transformer 122155360
What model of transformer does the Baxi Roca RS 20/20 F have according to its label?
What voltage and frequency does the ZAG 2V transformer of the Baxi Roca RS 20/20 F operate at?
How much power does the ZAG 2V transformer of the Baxi Roca RS 20/20 F consume?
Is this ZAG 2V transformer also suitable for a Baxi Roca R30/30F?
