22V boiler for Polti RollySteam Cordless WD30C WD50C vacuum cleaner floor washer

Replacement steam generator designed for the thermal circuit of the indicated Polti floor scrubbers. The heating unit, code SLDB3401, is the component in which water is heated before being sent to the steam delivery circuit. This steam floor scrubber boiler allows you to restore the steam function when the original unit is faulty, clogged, or damaged. Compatible with the models listed at the bottom of the page. The boiler unit is supplied wrapped in a heat-shrink sleeve to protect the external components from heat.

Technical specifications
- Original Polti spare part
- MPN (Manufacturer Part Number): SLDB3401
- Country of manufacture: Made in China
- Material: plastic and metal
- Color: silver
- Compatible series (check the models under compatibility): RollySteam Cordless
- What's included: boiler unit with K131220B8 disc thermostat and safety thermal fuse
- Data shown on the spare part: SANA FS1435C
- Voltage: 22V
- Power: 270W
- Alternative or discontinued codes: M0007726

Dimensions personally checked by the PG Service team
- Boiler block length 32.2mm
- Boiler block width 28mm
- Boiler block height 20mm

General operation
The boiler of a steam floor scrubber is used to bring the water to the operating temperature required for steam production. Inside the generator, the heating element transfers heat to the water while the control devices regulate the operation of the system. The steam produced is then directed towards the ducts that carry it to the head or cleaning system. An efficient boiler allows you to maintain stable steam generation, avoiding abnormal drops due to heating problems.

Symptoms, what problems can a faulty boiler cause?
- The floor scrubber no longer produces steam? A faulty steam generator can prevent steam production, although the same symptom can be caused by a blockage or a problem in the water circuit.
- The machine heats up but produces very little steam? A partially scaled boiler or a clogged steam circuit can cause weak or irregular production.
- The time required to obtain steam has become much longer? The accumulation of deposits on the heating unit or a problem with the resistance can cause abnormally long heating times.
- The boiler does not seem to heat up at all? The heating unit resistance could be broken or there could be a problem with the safety or power supply devices.
- Steam production stops after a few seconds? The problem may depend on a boiler that does not correctly maintain the temperature or insufficient water supply.
- You hear an abnormal boiling noise but little steam comes out? Internal deposits or partially clogged passages can cause abnormal noises in the boiler without a corresponding delivery.
- Are there water leaks in the boiler area? A leak may come from the boiler connections, the seals, or a damage to the heating unit.
- Steam comes out from inside the machine instead of the designated area? Stop using it and check the boiler, fittings, and pipes because there could be a leak in the pressurized circuit.
- The machine reports a heating anomaly or stops the steam function? Before replacing the boiler, it is advisable to also check the temperature sensors, thermal protections, wiring, and power supply of the heating unit.

Tips for product longevity
To preserve the boiler, it is essential to limit the accumulation of mineral deposits and prevent impurities from reaching the heating unit. Follow the manufacturer's descaling and cleaning procedures for the specific model. Do not introduce acids, detergents, fragrances, or descaling substances directly into the system if the manual does not expressly provide for their use. If steam production gradually decreases, perform maintenance before the lime buildup becomes large enough to block the circuit.

Tips from the PG Service professionals
- To preserve the boiler, we recommend using the appliance by respecting the instructions provided for filling and water quality. Mineral deposits can indeed accumulate in the heating unit and gradually reduce heat exchange. To extend the useful life of the boiler, regularly perform the cleaning operations provided for the floor scrubber and do not use additives, fragrances, or detergents in the water circuit unless expressly allowed. The most common causes of failure are lime buildup, operation with insufficient water supply, overheating, and deterioration of the seals. Do not open or work on the boiler unit when it is hot or powered: before any technical operation, wait for it to cool down completely and disconnect the appliance.

Is it not exactly the item you are looking for?
In addition to the replacement boiler, we have thousands of original Polti accessories and spare parts available in our store. If you do not find what you need through independent browsing, you can contact us anytime, and we will respond within a few hours, even during holidays and weekends. And if an item is not available, we will do everything we can to find it and order it especially for you. With us, you can find much more besides spare parts for Polti floor scrubbers!

Compatibility (is it right for my product?)
This heat exchanger unit is certified for use on the following Polti floor scrubber models. Find the identification label on your appliance and check the compatibility. Still undecided? Write to us for immediate support.

WDEU0003 - ROLLYSTEAM WD30C CORDLESS
WDEU0002 - ROLLYSTEAM WD40C CORDLESS
WDEU0001 - ROLLYSTEAM WD50C CORDLESS