Wilo Circulating Pump Motor TYP RS26/6-3 P Ref. 4526599
Wilo circulator pump Type RS26/6-3 P, manufactured at the Wilo Intec plant in France. The catalog listed it as "RS25", but the label indicates RS26. It operates at three speeds: 0.20A/40W, 0.30A/67W, and 0.40A/99W, and circulates water in the heating circuit. The replacement requires first confirming the fault of the part through technical diagnosis, even when it stops circulating or makes noise.
- Type of part
- Pumps
- Status
- Refurbished
- Catalogue reference
- 4526599
- Warranty
- 1 year
Wilo boilers compatible with reference 4526599
Circulating pump with reference 4526599. A proven compatibility: Motor TYP RS25 6 3 P.
Proven compatibility
| Boiler model | Family | Verification |
|---|---|---|
| Wilo Motor TYP RS25 6 3 P | Wilo | 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. 4526599 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 4526599. 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 circulation pump 4526599
The circulation pump circulates the water in the heating circuit. These are the typical symptoms and what to do:
Common symptoms and faults
- 01
The pump is not circulating water or is circulating very little through the heating system.
Cause: The impeller may be blocked by lime or accumulated air, or the motor has lost power.
Change the pump to the highest speed (3) before replacing it: sometimes with less power it cannot overcome the resistance of the circuit.
- 02
Noise in the pump body
Cause: Air trapped in the impeller or a worn bearing generates that noise when rotating.
Bleed the pump by loosening the central rotor plug with the equipment turned off before considering replacing it.
- 03
The boiler is not heating properly due to lack of circulation.
Cause: Without sufficient flow, the heat exchanger does not transfer heat to the circuit, and the boiler may lock out due to overheating.
Check that the three speeds respond when changed manually before replacing the pump.
- 04
The pump does not start when the heating is turned on.
Cause: The shaft seizes up after a period of inactivity, typical at the end of summer.
With the pump unplugged, turn the shaft screw in the center of the motor with a screwdriver to free it before replacing 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 Wilo 4526599 circulation pump.
- Catalogue reference
- 4526599
- Uniclima internal SKU
- MBWTRS2563P
- Brand
- Wilo
- Type of part
- Pumps
- Units in stock
- 0 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.
- Condenser
- 2.6 µF
- Voltage
- ~230V-50Hz
- Protection
- IP44
- Nominal pressure
- PN10
- Thermal class
- Class F - TF110
- Current and power speed I
- 0.20 A / 40 W
- Current and Power Speed II
- 0.30 A / 67 W
- Current and power speed III
- 0.40 A / 99 W
- Manufacturer code
- 4526599
- Model on label
- RS26/6-3 P
- Manufacturing date
- 18W43 (week 43 of 2018)
- Manufacturing plant
- Wilo Imec, 50 av E. Casella, F-13700 Aubigny (text partially cut off in photo)
- The numerical code N 4526599 does match the sales reference.
Frequently asked questions about the circulator pump 4526599
Is the motor of this Wilo pump RS25 or RS26?
Who manufactures the circulator pump Ref. 4526599?
How many speeds does the Wilo RS26/6-3 P pump operate at?
Does the reference 4526599 printed on the PCB match this Wilo pump?
When should the Wilo RS26/6-3 P pump Ref. 4526599 be replaced?
