Potterton
Potterton Flow Controller NXR4-10 5139880
Potterton 5139880 flow controller NXR4-10 for Potterton Commercial Nxr4I boilers in 8 to 14 section configurations.
At a glance
- Appliance family: Potterton Commercial Nxr4I
£342.85
£285.71 ex. VAT · VAT at 20%
Same-day dispatch
Ordered by 4pm Mon–Fri, 10:30am Sat.
30-day returns
Unused, in original packaging.
What it is
The Potterton 5139880 flow controller, supplied as the NXR4-10, is a flow switch used on Potterton Commercial gas boilers. It monitors water flow through the appliance and signals the control system so the burner is only permitted to fire when flow is established. It is listed for the Potterton Commercial Nxr4I range.
Signs this part needs replacing
- The boiler circulates water but fails to fire on a call for heat.
- Repeated lockouts or shutdowns shortly after the burner starts.
- Intermittent operation, with the appliance running normally on some demand cycles and not others.
- Flow-related fault codes or lockout indications logged by the boiler controls.
- Burner ignition that cannot be sustained despite the pump running and system pressure being correct.
Before you order
- Confirm the appliance model on the rating plate is a Potterton Commercial Nxr4I and note the section count.
- Check the existing controller is marked NXR4-10 or that the appliance documentation lists part number 5139880 for your model.
- Inspect the wiring and connections at the flow controller before replacing, as loose or damaged terminals can produce the same symptoms.
No specification data held for this part.
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| POTTERTON COMMERCIAL NXR4I 10 SECTION | — | — | — | |
| POTTERTON COMMERCIAL NXR4I 11 SECTION | — | — | — | |
| POTTERTON COMMERCIAL NXR4I 12 SECTION | — | — | — | |
| POTTERTON COMMERCIAL NXR4I 13 SECTION | — | — | — | |
| POTTERTON COMMERCIAL NXR4I 14 SECTION | — | — | — | |
| POTTERTON COMMERCIAL NXR4I 8 SECTION | — | — | — | |
| POTTERTON COMMERCIAL NXR4I 9 SECTION | — | — | — | |
| POTTERTON COMMERCIAL POTTERTON COMMERCIAL SPARES | — | — | — |
Documents & drawings
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