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

Call 0800 820 3046 Request pump support

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.

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

Related sewage pump services

Sewage Pump Sales Sewage Pump Repair Installation Servicing Pump Stations Brands

Frequently asked questions

Can you help with this service urgently?

For urgent sewage pump failures, call 0800 820 3046 or send a support request with site details.