Troubleshooting Guides

Our pumps don’t go wrong very often but with frequent use some components eventually wear out. The good news is that all of the components of our pumps are replaceable. If your pump stops working you want to get your pump up and running as soon as possible. With that in mind (and because our technicians are only available during normal working hours) we have developed a number of troubleshooting guides in different formats to help Service Agents, technicians and other competent persons resolve problems with a SteelPump out of hours.

SteelPumps Troubleshooting Interactive Guide

The SteelPumps Troubleshooting interactive guide for technicians is great if you have a good internet connection. The simple question and answer format will guide you through to the likely cause of a problem and how to resolve it.

SteelPumps Troubleshooting Flowchart

The Steelpumps Troubleshooting Flowchart (2MB pdf) is great for technicians onsite with little or no internet connection. Simply print out this guide and keep it with your pump documentation.

SteelPumps Troubleshooting Overview

The whole document can be downloaded at SteelPumps Troubleshooting Guide (pdf opens in a new window).

Automatic Pumps

X-AJE Series

Problem Possible Causes Solutions
Pump has reduced water flow Suction pipe obstructed Clear Obstruction
Delivery pipe obstructed Clear Obstruction
Non return valve obstructed Clear Obstruction
Partially blocked impeller Return for service
Insufficient voltage from supply Check electrical supply for voltage drop (line impedance of L-N conductors) or check voltage drop calcs for cable size
Pump does not run – no sound No electrical supply Check electrical supply
Faulty control PCB Return for service
Failed capacitor Return for service
Pump does not run – humming sound Failing capacitor Return for service
Impeller blocked Return for service
Motor/Bearings seized Return for service
Pump Trips RCD/GFCI Water ingress to electrical compartment/motor Return for service
Damaged cable Return for service
Water ingress to isolator switch or junction box Dry out junctions
RCD/GFCI too sensitive Ramp or No-trip test (10mA RCD, 2mA GFCI)
Disconnected Neutral or CPC (GFCI) Verify conductor integrity
Pump stops when outlet closed but does not restart Slow leak on discharge hose Check hose, seal connections
Slow leak on valves/ballcocks on discharge line Pressure test
Faulty pressure switch Return for service
Flow sensor blocked Check flow sensor spins ok
Pump does not stop when outlet closed Large leak on discharge hose Pressure test
Pump installed is manual not automatic Check model (X-AJE not X-JE)
Large leak from pump body (damaged flange, punctured pump body Return for service
Pump runs but does not pump water Pump not primed (air) Prime pump and suction hose (fill with water)
Leak in suction hose Check hose, seal connections
Severe blockage Clear Obstruction
Non return valve seized Replace NRV
Impeller failed Return for service
Pump stops when outlet closed and immediately restarts (cycling) Missing or faulty non return valve Replace NRV
Failed main body seal Return for service
Pump has reduced pressure Damaged venturi Return for service
Partially blocked impeller Return for service
Insufficient voltage from supply Check electrical supply for voltage drop (line impedance of L-N conductors) or check voltage drop calcs for cable size

X-AMO/X-AMV/X-AMV HF Series

Problem Possible Causes Solutions
 Pump has reduced water flow Suction pipe obstructed Clear Obstruction
Delivery pipe obstructed Clear Obstruction
Non return valve obstructed Clear Obstruction
Partially blocked impeller Return for service
Insufficient voltage from supply Check electrical supply for voltage drop (line impedance of L-N conductors) or check voltage drop calcs for cable size
Damage to diffuser cover due to water hammer  Return for service, increase delivery pipe size or fit shock arrestor near pump
 Pump does not run – no sound No electrical supply Check electrical supply
Faulty control PCB Return for service
Failed capacitor Return for service
 Pump does not run – humming sound Failing capacitor Return for service
Impeller blocked Return for service
Motor/Bearings seized Return for service
Pump Trips RCD/GFCI Water ingress to electrical compartment/motor Return for service
Damaged cable Return for service
Water ingress to isolator switch or junction box Dry out junctions
RCD/GFCI too sensitive Ramp or No-trip test (10mA RCD, 2mA GFCI)
Disconnected Neutral or CPC (GFCI) Verify conductor integrity
Pump stops when outlet closed but does not restart Slow leak on discharge hose Check hose, seal connections
Slow leak on valves/ballcocks on discharge line Pressure test
Faulty pressure switch Return for service
Flow sensor blocked Check flow sensor spins ok
Pump does not stop when outlet closed Large leak on discharge hose Pressure test
Pump installed is manual not automatic Check model (X-AJE not X-JE)
Large leak from pump body (damaged flange, punctured pump body Return for service
Pump runs but does not pump water Pump not primed (air) Prime pump and suction hose (fill with water)
Leak in suction hose Check hose, seal connections
Severe blockage Clear Obstruction
Non return valve seized Replace NRV
Impeller failed Return for service
Pump stops when outlet closed and immediately restarts (cycling) Missing or faulty non return valve Replace NRV
Failed main body seal Return for service
 Pump has reduced pressure Damaged venturi Return for service
Partially blocked impeller Return for service
Insufficient voltage from supply Check electrical supply for voltage drop (line impedance of L-N conductors) or check voltage drop calcs for cable size
Damage to diffuser cover due to water hammer Return for service, increase delivery pipe size or fit shock arrestor near pump

X-A2CP Series

Problem Possible Causes Solutions
Pump has reduced water flow Suction pipe obstructed Clear Obstruction
Delivery pipe obstructed Clear Obstruction
Non return valve obstructed Clear Obstruction
Partially blocked impeller Return for service
Insufficient voltage from supply Check electrical supply for voltage drop (line impedance of L-N conductors) or check voltage drop calcs for cable size
Pump does not run – no sound No electrical supply Check electrical supply
Faulty control PCB Return for service
Failed capacitor Return for service
Pump does not run – humming sound Failing capacitor Return for service
Impeller blocked Return for service
Motor/Bearings seized Return for service
Pump Trips RCD/GFCI Water ingress to electrical compartment/motor Return for service
Damaged cable Return for service
Water ingress to isolator switch or junction box Dry out junctions
RCD/GFCI too sensitive Ramp or No-trip test (10mA RCD, 2mA GFCI)
Disconnected Neutral or CPC
(GFCI)
Verify conductor integrity
Pump stops when outlet closed but does not restart Slow leak on discharge hose Check hose, seal connections
Slow leak on valves/ballcocks on discharge line Pressure test
Faulty pressure switch Return for service
Flow sensor blocked Check flow sensor spins ok
Pump does not stop when outlet closed Large leak on discharge hose Pressure test
Pump installed is manual not automatic Check model (X-AJE not X-JE)
Large leak from pump body (damaged flange, punctured pump body) Return for service
Pump runs but does not pump water Pump not primed (air) Prime pump and suction hose (fill with water)
Leak in suction hose Check hose, seal connections
Severe blockage Clear Obstruction
Non return valve siezed Replace NRV
Impeller failed Return for service
Pump stops when outlet closed and immediately restarts (cycling) Missing or faulty non return valve Replace NRV
Failed main body seal Return for service
Pump has reduced pressure Partially blocked impeller Return for service
Insufficient voltage from supply Check electrical supply for voltage drop (line impedance of L-N conductors) or check voltage drop calcs for cable size

Manual Pumps

X-JE Series

Problem Possible Causes Solutions
Pump has reduced water flow Suction pipe obstructed Clear Obstruction
Delivery pipe obstructed Clear Obstruction
Non return valve obstructed Clear Obstruction
Partially blocked impeller Return for service
Insufficient voltage from supply Check electrical supply for voltage drop (line impedance of L-N conductors) or check voltage drop calcs for cable size
Pump does not run – no sound No electrical supply Check electrical supply
Failed capacitor Return for service
Pump does not run – humming sound Failing capacitor Return for service
Impeller blocked Return for service
Motor/Bearings seized Return for service
Pump Trips RCD/GFCI Water ingress to electrical compartment/motor Return for service
Damaged cable Return for service
Water ingress to isolator switch or junction box Dry out junctions
RCD/GFCI too sensitive Ramp or No-trip test (10mA RCD, 2mA GFCI)
Disconnected Neutral or CPC (GFCI) Verify conductor integrity
Pump runs but does not pump water Pump not primed (air) Prime pump and suction hose (fill with water)
Leak in suction hose Check hose, seal connections
Severe blockage Clear Obstruction
Non return valve seized Replace NRV
Impeller failed Return for service
Pump has reduced pressure Damaged venturi Return for service
Partially blocked impeller Return for service
Insufficient voltage from supply Check electrical supply for voltage drop (line impedance of L-N conductors) or check voltage drop calcs for cable size

X-MO/X-MV/X-MV HF Series

Problem Possible Causes Solutions
Pump has reduced water flow Suction pipe obstructed Clear Obstruction
Delivery pipe obstructed Clear Obstruction
Non return valve obstructed Clear Obstruction
Partially blocked impeller Return for service
Insufficient voltage from supply Check electrical supply for voltage drop (line impedance of L-N conductors) or check voltage drop calcs for cable size
Damage to diffuser cover due to water hammer Return for service, increase delivery pipe size or fit shock arrestor near pump
Pump does not run – no sound No electrical supply Check electrical supply
Faulty control PCB Return for service
Failed capacitor Return for service
Pump does not run – humming sound Failing capacitor Return for service
Impeller blocked Return for service
Motor/Bearings seized Return for service
Pump Trips RCD/GFCI Water ingress to electrical compartment/motor Return for service
Damaged cable Return for service
Water ingress to isolator switch or junction box Dry out junctions
RCD/GFCI too sensitive Ramp or No-trip test (10mA RCD, 2mA GFCI)
Disconnected Neutral or CPC (GFCI) Verify conductor integrity
Pump does not stop when outlet closed Large leak on discharge hose Pressure test
Pump installed is manual not automatic Check model (X-AJE not X-JE)
Large leak from pump body (damaged flange, punctured pump body) Return for service
Pump runs but does not pump water Pump not primed (air) Prime pump and suction hose (fill with water)
Leak in suction hose Check hose, seal connections
Severe blockage Clear Obstruction
Non return valve seized Replace NRV
Impeller failed Return for service
Pump has reduced pressure Damaged venturi Return for service
Partially blocked impeller Return for service
Insufficient voltage from supply Check electrical supply for voltage drop (line impedance of L-N conductors) or check voltage drop calcs for cable size
Damage to diffuser cover due to water hammer Return for service, increase delivery pipe size or fit shock arrestor near pump

X-A2CP Series

Problem Possible Causes Solutions
Pump has reduced water flow Suction pipe obstructed Clear Obstruction
Delivery pipe obstructed Clear Obstruction
Non return valve obstructed Clear Obstruction
Partially blocked impeller Return for service
Insufficient voltage from supply Check electrical supply for voltage drop (line impedance of L-N conductors) or check voltage drop calcs for cable size
Pump does not run – no sound No electrical supply Check electrical supply
Faulty control PCB Return for service
Failed capacitor Return for service
Pump does not run – humming sound Failing capacitor Return for service
Impeller blocked Return for service
Motor/Bearings siezed Return for service
Pump Trips RCD/GFCI Water ingress to electrical compartment/motor Return for service
Damaged cable Return for service
Water ingress to isolator switch or junction box Dry out junctions
RCD/GFCI too sensitive Ramp or No-trip test (10mA RCD, 2mA GFCI)
Disconnected Neutral or CPC (GFCI) Verify conductor integrity
Pump runs but does not pump water Pump not primed (air) Prime pump and suction hose (fill with water)
Leak in suction hose Check hose, seal connections
Severe blockage Clear Obstruction
Non return valve seized Replace NRV
Impeller failed Return for service
Pump has reduced pressure Partially blocked impeller Return for service
Insufficient voltage from supply Check electrical supply for voltage drop (line impedance of L-N conductors) or check voltage drop calcs for cable size

If, after reading through this guide, you are still experiencing problems with your SteelPump please Contact Us.