Demrad Kalisto BK/BKC/HK/HKC 224-228 PCB - Ref. 3003201229
The control PCB manages the ignition, burner modulation, pump, and safety features of the boiler. If it fails, the boiler may not start, become locked, or exhibit erratic behavior. This board is compatible with models such as Kalisto BK 224, Kalisto BK 228, Kalisto BKC 224, among others. It may display fault codes such as F61, F63, F64, F65, or F67. A technician must confirm through diagnosis whether it needs to be replaced when these issues are detected or if the boiler is experiencing operational faults.
- Type of part
- PCBs (control boards)
- Status
- Refurbished
- Catalogue reference
- 3003201229
- Warranty
- 1 year
Airsol boilers compatible with reference 3003201229
PCB with reference 3003201229. Nine confirmed compatibilities: Kalisto BK 224 and Kalisto BK 228.
Proven compatibility
| Boiler model | Family | Verification |
|---|---|---|
| Airsol Kalisto BK 224 | Demrad | Contrasted |
| Airsol Kalisto BK 228 | Demrad | Contrasted |
| Airsol Kalisto BKC 224 | Demrad | Contrasted |
| Airsol Kalisto BKC 228 | Demrad | Contrasted |
| Airsol Kalisto HK 224 | Demrad | Contrasted |
| Airsol Kalisto HK 228 | Demrad | Contrasted |
| Airsol Kalisto HKC 224 FE | Demrad | Contrasted |
| Airsol Kalisto HKC 228 FE | Demrad | Contrasted |
| Airsol Tayros Digital (models with LCD display) | Demrad | 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. 3003201229 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 3003201229. 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 on the PCB 3003201229
The PCB controls the ignition, modulation, and safety features of the boiler. These are the typical symptoms and what to do:
Common symptoms and faults
- 01
The boiler does not turn on and the display remains completely black.
Cause: The PCB is not receiving power from the system, including the display.
Check the fuse and the 230V input wiring before replacing the PCB.
- 02
A fault code appears on the screen that does not disappear even after resetting the boiler.
Cause: The electronics continue to detect a fault in the circuit that maintains the lock.
Note the code and check which component it corresponds to before assuming it's the PCB.
- 03
The LCD display appears blurry, with lines or missing segments.
Cause: The part of the PCB that controls the display is faulty.
Check that the display connector is properly seated before replacing the entire PCB.
- 04
The boiler turns on but does not respond when the temperature is changed from the control.
Cause: The PCB does not process the user's commands correctly.
Disconnect and reconnect the boiler from the power supply to rule out a temporary hang before replacing it.
Airsol fault codes that require diagnosis
| Code | Fault | Technical checks |
|---|---|---|
| F61 | Fault in the main PCB. | The PCB can fail in the control circuit (e.g., output to gas valve/eBUS), triggering the self-diagnosis. Check 230 V and 5/12 V on the PCB, connectors, and DSN code; if everything is correct and the issue persists, replace the PCB. |
| F63 | Memory fault in the main PCB. | Memory corruption/defect in the PCB. Try a reset and check DSN; if not resolved, verification points to replacing the board. |
| F64 | Fault in main PCB (rapid fluctuation of flow/return sensor). | The ADC of the PCB interprets impossible variations of the NTC; if wiring and sensors are fine, the origin is in the electronics of the board. Check connections and, if it persists, replace the PCB. |
| F65 | Fault in main PCB (excessive electronic temperature). | This symptom may be related to the part, but it does not confirm that it is faulty. A technician must check the equipment and its inspection according to the manual before deciding on a repair or replacement. |
| F67 | Fault in main PCB (flame signal on PCB). | The flame detection circuit on the PCB interprets an anomalous signal; if the electrode, ground, and wiring are correct, the fault lies in the control board. Confirm by measuring and, if it persists, replace the PCB. |
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 PCB Airsol 3003201229
- Catalogue reference
- 3003201229
- Uniclima internal SKU
- AIRSPLCHK124
- Brand
- Airsol
- Type of part
- PCBs (control boards)
- Units in stock
- 5 units
- Status
- Refurbished
- Warranty
- 1 year
- Shipping
- Delivery time shown at checkout
- Return
- 14 days
Frequently asked questions about the PCB 3003201229
Is this PCB with reference 3003201229 suitable for the Demrad Kalisto BKC 228?
Is this PCB suitable for the Demrad Tayros Digital?
Is the same PCB used for the HKC 224 FE and the HKC 228 FE?
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