Vokera Syntesi 25/29/35 Boiler Pump Head 20104311
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Technical details
Vokera ERP Pump 20104311 - Replaced 10020438 & 10021792
Product Overview
The Vokera ERP Pump 20104311 is a circulating pump designed for use within selected Vokera heating systems. The pump circulates heated water throughout the boiler and central heating system, helping to distribute heat efficiently to radiators and heat exchangers.
Part number 20104311 replaces previous manufacturer part numbers 10020438 and 10021792. As an essential hydraulic component, the circulating pump supports correct water circulation and efficient heating system operation.
ℹ️ Product Condition Options:
This part may be available in New or Refurbished condition. Please select your preferred option from the dropdown menu above. Refurbished units are professionally inspected and tested to help ensure reliable operation. Please verify compatibility before purchasing to ensure correct fitment.
Technical Insight & Common Failure Symptoms
The circulating pump is designed to maintain continuous water flow around the heating circuit during normal boiler operation. Over time, internal wear, electrical faults, blockages, or mechanical issues may affect pump performance.
Typical symptoms linked to a failing circulating pump include:
- Boiler failing to circulate hot water correctly
- Radiators remaining cold or heating unevenly
- Pump noise, humming, vibration, or unusual operation
- Boiler lockouts or fault codes related to poor circulation
- Reduced heating performance
- Pump seizure caused by wear or internal component failure
Replacing a faulty circulating pump may help restore correct water circulation and support normal heating system operation.
You can usually find pump troubleshooting information in:
- The Vokera Support Centre
- The Vokera Spare Parts Catalogue
- Your boiler installation and servicing manual
- Boiler fault code documentation
Compatibility
This part (MPN: 20104311, replaces 10020438 & 10021792) is designed for models within the Vokera range. Please strictly verify the part number against your boiler's technical manual before ordering to guarantee correct fitment.
Safety Advice
Boiler parts involve gas, water, electricity, and heating system components. Installation and servicing must be carried out by a Gas Safe registered engineer in accordance with current regulations.
This part fits the following boilers: