Vaillant Ecotec Plus Circulating Pump VMW ES 296/3-5 Ref. 178983
RefurbishedVaillantPumps

Vaillant Ecotec Plus Circulating Pump VMW ES 296/3-5 Ref. 178983

60 €VAT includedIn stock · 1 unit

Circulating pump: refurbished spare part that circulates water in the heating circuit. Useful if there is noise, water is not circulating, or radiators do not heat evenly. Compatible with VMW ES 296/3-5, VMW 296/3-5, VMW 296/3-5 R3 (ref. 178983). Includes a one-year warranty and delivery within 2–4 working days in the EU.

1
Consult via WhatsApp
Delivery in 2–4 working days
1-year warranty
14-day return
Technical support

Key Data

Reference
178983
Brand
Vaillant
Type of part
Pumps
Available units
1 unit in stock
Status
Refurbished
Warranty
1 year
Shipping
2–4 working days (EU)
Return
14 days

The same part (ref. 178983) equips these models. Verified compatibility; check the reference before purchasing.

ecoTEC plus / pro (VMW combi)

  • VMW ES 296/3-5
  • VMW 296/3-5
  • VMW 296/3-5 R3
  • VMW 296/3-5 R5
  • VMW 226/3-3
  • VMW 236/3-5
  • VMW 24/280/3-5
  • VMW 24/282/4-5 RV
  • VMW 280/3-5
  • VMW 286/5-3
  • VMW 346/3-5

ecoTEC plus / pro (VM heating only)

  • VM 240/3-5
  • VM 242/4-5
  • VM 246/3-5
  • VM 280/3-5
  • VM 282/4-5

Fault codes related to this part (not the entire boiler). They usually have more possible causes: first rule out electrodes, wiring/connections, and gas supply. Verified with ≥3 sources.

CodeWhat does it mean?Cause and diagnosis (this part)
F.75Pump fault/lack of water: when the pump starts, a sufficient pressure increase is not detected.Blocked/faulty heating pump or with low performance does not generate the expected pressure increase; verify by listening to the start-up, measuring the pressure variation from the sensor, and checking the pump's power supply/communication.
F.23Safety shutdown: flow/return temperature variation too high (lack of circulation).Blocked pump or insufficient flow causes high temperature differential; check pump speed/condition and installation flow, and bleed air.
F.24Safety shutdown: temperature rise too fast (lack of circulation).Blocked pump or reduced power prevents heat evacuation from the heat exchanger, causing the temperature to rise quickly; check that the pump is rotating and its speed (parameters D.014/D.015) and bleed the circuit.
F.22Safety shutdown: lack of water/ water pressure too low in the product.If the pump is blocked or without power, there is no circulation, and the electronics may interpret a lack of water; check the actual circuit pressure, pump rotation/power supply, and wiring to the pump/pressure sensor.
How do I know if this circulating pump is the one for my boiler?
Verify the reference 178983 printed and ensure your model is on the list of compatible ones; also compare the connections with the original part. It is a Grundfos piece.
What is it used for?
The circulating pump circulates the water through the heating circuit.
Noise, water not circulating, or cold radiators?
Typical symptoms: humming, seized rotor after a long stop, or radiators that do not heat evenly.
Which models is it suitable for?
Part shared by various models (see Compatibility). If your model does not appear, send us a photo of the marking and we will confirm it.
Installation and recommendations
Bleed the air from the circuit and the pump; check the pressure at 1–1.5 bar with the boiler cold.
What does refurbished mean and what coverage does it have?
Part removed from a boiler out of service, inspected and tested. Includes 1-year warranty and 14-day return policy. Delivery within 2–4 working days in the EU.

Related Spare Parts Boiler Ecotec Plus VMW ES 296/3-5

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