Sewage pumps by Alton Pumps

Sewage Pump Repair

Fault finding and repair support for failed sewage pumps, blocked pumps, tripping motors, float switch faults, high level alarms and pump station breakdowns.

Expert engineersUrgent fault supportAll major brands

Sewage pump repair and fault diagnosis

Sewage pump faults can involve the pump, floats, guide rails, non-return valves, discharge pipework, control panel, overloads or the condition of the chamber. We help identify the cause before recommending repair or replacement.

Common sewage pump faults

Typical issues include blocked impellers, high level alarms, pumps not starting, pumps tripping electrics, failed float switches, damaged cables, worn seals, noisy operation and poor pumping performance.

Repair or replacement advice

Where a repair is sensible, we aim to restore the system reliably. Where the pump is uneconomical to repair, we can advise on a suitable replacement sewage pump and any associated controls or installation changes.

Domestic and private sewage pump faults

For a house or private pumping station, send the site postcode, photos taken safely from outside the chamber, the pump or panel make and model if visible, the alarm state and whether the pump is running, silent, tripping, backing up or overflowing. Reduce water use where practical, do not enter a chamber and do not open live electrical equipment.

Commercial and managed-site faults

Facilities, property and operational teams should include the site postcode, current operational impact, pump and control-panel records where available, access constraints, alarm or fault indicators and the service required. The information is reviewed before repair, replacement or further investigation is recommended.

Repair enquiries across Great Britain

Repair enquiries are reviewed for sites in England, Scotland and Wales. Engineer attendance is confirmed only after the postcode, system details, access, urgency and current availability have been assessed. Northern Ireland is outside the current service coverage.

Fault finding and self-help

Common symptoms, safe checks and likely causes

This page is for diagnosing sewage pump faults before deciding whether repair, replacement or further investigation is the best route.

Sewage pump not running

What you may notice

  • High level alarm sounding
  • Pump is silent
  • Wastewater level is rising

Safe checks before calling

  • Check whether the control panel has power
  • Look for visible alarm lights or fault codes
  • Check whether any external isolator has been switched off accidentally

Possible causes

  • Failed float switch
  • Tripped overload
  • Motor failure
  • Blocked impeller
  • Control panel fault

Pump tripping electrics

What you may notice

  • MCB, RCD or overload trips when the pump starts
  • Pump briefly runs then cuts out
  • Burning smell or repeated electrical fault

Safe checks before calling

  • Do not keep resetting a breaker repeatedly
  • Do not open the control panel unless qualified
  • Take a photo of the panel lights and breaker position

Possible causes

  • Water ingress into motor or cable
  • Seized impeller
  • Failed capacitor
  • Overload due to blockage
  • Electrical fault in panel or pump cable

Pump runs but chamber does not empty

What you may notice

  • Pump noise is present but level does not drop
  • Repeated alarm after reset
  • Poor discharge or slow pumping

Safe checks before calling

  • Listen from outside for pump operation
  • Check for obvious closed valves if safe and visible
  • Send photos of pipework and chamber arrangement

Possible causes

  • Blocked non-return valve
  • Air lock
  • Impeller damage
  • Partially blocked rising main
  • Pump rotating the wrong way on three phase systems

What to send with an enquiry

Site postcode and access detailsPump make and model if visible on the pump or panelPhotos of the chamber from outside, control panel, alarm beacon and serial plateWhat the pump is doing now: running, silent, tripping, alarming, backing up or overflowingWhether the system serves a house, commercial building, pump station, basement, treatment plant or foul water application
Send pump details

Frequently asked questions

What should I do if a sewage pump alarm is sounding?

Reduce water use where practical. Do not enter a chamber or open live electrical equipment. For a private pump station, send the postcode, safely taken photos, visible pump or panel details and the alarm state. For a commercial or managed site, also include the operational impact, available pump and control-panel records, access constraints and alarm indicators.

Can you help with this service urgently?

For urgent sewage pump failures, call 01428 761000 or send a support request with site details.

Not sure which sewage pump you need?Send a photo of the old pump's data plate and we'll match it. We also fit, repair and service sewage pumps.
01428 761000 Ask an engineer