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

ProblemPossible CausesSolutions
Pump has reduced water flowSuction pipe obstructedClear Obstruction
Delivery pipe obstructedClear Obstruction
Non return valve obstructedClear Obstruction
Partially blocked impellerReturn for service
Insufficient voltage from supplyCheck electrical supply for voltage drop (line impedance of L-N conductors) or check voltage drop calcs for cable size
Pump does not run – no soundNo electrical supplyCheck electrical supply
Faulty control PCBReturn for service
Failed capacitorReturn for service
Pump does not run – humming soundFailing capacitorReturn for service
Impeller blockedReturn for service
Motor/Bearings seizedReturn for service
Pump Trips RCD/GFCIWater ingress to electrical compartment/motorReturn for service
Damaged cableReturn for service
Water ingress to isolator switch or junction boxDry out junctions
RCD/GFCI too sensitiveRamp or No-trip test (10mA RCD, 2mA GFCI)
Disconnected Neutral or CPC (GFCI)Verify conductor integrity
Pump stops when outlet closed but does not restartSlow leak on discharge hoseCheck hose, seal connections
Slow leak on valves/ballcocks on discharge linePressure test
Faulty pressure switchReturn for service
Flow sensor blockedCheck flow sensor spins ok
Pump does not stop when outlet closedLarge leak on discharge hosePressure test
Pump installed is manual not automaticCheck model (X-AJE not X-JE)
Large leak from pump body (damaged flange, punctured pump bodyReturn for service
Pump runs but does not pump waterPump not primed (air)Prime pump and suction hose (fill with water)
Leak in suction hoseCheck hose, seal connections
Severe blockageClear Obstruction
Non return valve seizedReplace NRV
Impeller failedReturn for service
Pump stops when outlet closed and immediately restarts (cycling)Missing or faulty non return valveReplace NRV
Failed main body sealReturn for service
Pump has reduced pressureDamaged venturiReturn for service
Partially blocked impellerReturn for service
Insufficient voltage from supplyCheck 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

ProblemPossible CausesSolutions
 Pump has reduced water flowSuction pipe obstructedClear Obstruction
Delivery pipe obstructedClear Obstruction
Non return valve obstructedClear Obstruction
Partially blocked impellerReturn for service
Insufficient voltage from supplyCheck 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 soundNo electrical supplyCheck electrical supply
Faulty control PCBReturn for service
Failed capacitorReturn for service
 Pump does not run – humming soundFailing capacitorReturn for service
Impeller blockedReturn for service
Motor/Bearings seizedReturn for service
Pump Trips RCD/GFCIWater ingress to electrical compartment/motorReturn for service
Damaged cableReturn for service
Water ingress to isolator switch or junction boxDry out junctions
RCD/GFCI too sensitiveRamp or No-trip test (10mA RCD, 2mA GFCI)
Disconnected Neutral or CPC (GFCI)Verify conductor integrity
Pump stops when outlet closed but does not restartSlow leak on discharge hoseCheck hose, seal connections
Slow leak on valves/ballcocks on discharge linePressure test
Faulty pressure switchReturn for service
Flow sensor blockedCheck flow sensor spins ok
Pump does not stop when outlet closedLarge leak on discharge hosePressure test
Pump installed is manual not automaticCheck model (X-AJE not X-JE)
Large leak from pump body (damaged flange, punctured pump bodyReturn for service
Pump runs but does not pump waterPump not primed (air)Prime pump and suction hose (fill with water)
Leak in suction hoseCheck hose, seal connections
Severe blockageClear Obstruction
Non return valve seizedReplace NRV
Impeller failedReturn for service
Pump stops when outlet closed and immediately restarts (cycling)Missing or faulty non return valveReplace NRV
Failed main body sealReturn for service
 Pump has reduced pressureDamaged venturiReturn for service
Partially blocked impellerReturn for service
Insufficient voltage from supplyCheck 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 hammerReturn for service, increase delivery pipe size or fit shock arrestor near pump

X-A2CP Series

ProblemPossible CausesSolutions
Pump has reduced water flowSuction pipe obstructedClear Obstruction
Delivery pipe obstructedClear Obstruction
Non return valve obstructedClear Obstruction
Partially blocked impellerReturn for service
Insufficient voltage from supplyCheck electrical supply for voltage drop (line impedance of L-N conductors) or check voltage drop calcs for cable size
Pump does not run – no soundNo electrical supplyCheck electrical supply
Faulty control PCBReturn for service
Failed capacitorReturn for service
Pump does not run – humming soundFailing capacitorReturn for service
Impeller blockedReturn for service
Motor/Bearings seizedReturn for service
Pump Trips RCD/GFCIWater ingress to electrical compartment/motorReturn for service
Damaged cableReturn for service
Water ingress to isolator switch or junction boxDry out junctions
RCD/GFCI too sensitiveRamp or No-trip test (10mA RCD, 2mA GFCI)
Disconnected Neutral or CPC
(GFCI)
Verify conductor integrity
Pump stops when outlet closed but does not restartSlow leak on discharge hoseCheck hose, seal connections
Slow leak on valves/ballcocks on discharge linePressure test
Faulty pressure switchReturn for service
Flow sensor blockedCheck flow sensor spins ok
Pump does not stop when outlet closedLarge leak on discharge hosePressure test
Pump installed is manual not automaticCheck 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 waterPump not primed (air)Prime pump and suction hose (fill with water)
Leak in suction hoseCheck hose, seal connections
Severe blockageClear Obstruction
Non return valve siezedReplace NRV
Impeller failedReturn for service
Pump stops when outlet closed and immediately restarts (cycling)Missing or faulty non return valveReplace NRV
Failed main body sealReturn for service
Pump has reduced pressurePartially blocked impellerReturn for service
Insufficient voltage from supplyCheck electrical supply for voltage drop (line impedance of L-N conductors) or check voltage drop calcs for cable size

Manual Pumps

X-JE Series

ProblemPossible CausesSolutions
Pump has reduced water flowSuction pipe obstructedClear Obstruction
Delivery pipe obstructedClear Obstruction
Non return valve obstructedClear Obstruction
Partially blocked impellerReturn for service
Insufficient voltage from supplyCheck electrical supply for voltage drop (line impedance of L-N conductors) or check voltage drop calcs for cable size
Pump does not run – no soundNo electrical supplyCheck electrical supply
Failed capacitorReturn for service
Pump does not run – humming soundFailing capacitorReturn for service
Impeller blockedReturn for service
Motor/Bearings seizedReturn for service
Pump Trips RCD/GFCIWater ingress to electrical compartment/motorReturn for service
Damaged cableReturn for service
Water ingress to isolator switch or junction boxDry out junctions
RCD/GFCI too sensitiveRamp or No-trip test (10mA RCD, 2mA GFCI)
Disconnected Neutral or CPC (GFCI)Verify conductor integrity
Pump runs but does not pump waterPump not primed (air)Prime pump and suction hose (fill with water)
Leak in suction hoseCheck hose, seal connections
Severe blockageClear Obstruction
Non return valve seizedReplace NRV
Impeller failedReturn for service
Pump has reduced pressureDamaged venturiReturn for service
Partially blocked impellerReturn for service
Insufficient voltage from supplyCheck 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

ProblemPossible CausesSolutions
Pump has reduced water flowSuction pipe obstructedClear Obstruction
Delivery pipe obstructedClear Obstruction
Non return valve obstructedClear Obstruction
Partially blocked impellerReturn for service
Insufficient voltage from supplyCheck 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 hammerReturn for service, increase delivery pipe size or fit shock arrestor near pump
Pump does not run – no soundNo electrical supplyCheck electrical supply
Faulty control PCBReturn for service
Failed capacitorReturn for service
Pump does not run – humming soundFailing capacitorReturn for service
Impeller blockedReturn for service
Motor/Bearings seizedReturn for service
Pump Trips RCD/GFCIWater ingress to electrical compartment/motorReturn for service
Damaged cableReturn for service
Water ingress to isolator switch or junction boxDry out junctions
RCD/GFCI too sensitiveRamp or No-trip test (10mA RCD, 2mA GFCI)
Disconnected Neutral or CPC (GFCI)Verify conductor integrity
Pump does not stop when outlet closedLarge leak on discharge hosePressure test
Pump installed is manual not automaticCheck 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 waterPump not primed (air)Prime pump and suction hose (fill with water)
Leak in suction hoseCheck hose, seal connections
Severe blockageClear Obstruction
Non return valve seizedReplace NRV
Impeller failedReturn for service
Pump has reduced pressureDamaged venturiReturn for service
Partially blocked impellerReturn for service
Insufficient voltage from supplyCheck 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 hammerReturn for service, increase delivery pipe size or fit shock arrestor near pump

X-A2CP Series

ProblemPossible CausesSolutions
Pump has reduced water flowSuction pipe obstructedClear Obstruction
Delivery pipe obstructedClear Obstruction
Non return valve obstructedClear Obstruction
Partially blocked impellerReturn for service
Insufficient voltage from supplyCheck electrical supply for voltage drop (line impedance of L-N conductors) or check voltage drop calcs for cable size
Pump does not run – no soundNo electrical supplyCheck electrical supply
Faulty control PCBReturn for service
Failed capacitorReturn for service
Pump does not run – humming soundFailing capacitorReturn for service
Impeller blockedReturn for service
Motor/Bearings siezedReturn for service
Pump Trips RCD/GFCIWater ingress to electrical compartment/motorReturn for service
Damaged cableReturn for service
Water ingress to isolator switch or junction boxDry out junctions
RCD/GFCI too sensitiveRamp or No-trip test (10mA RCD, 2mA GFCI)
Disconnected Neutral or CPC (GFCI)Verify conductor integrity
Pump runs but does not pump waterPump not primed (air)Prime pump and suction hose (fill with water)
Leak in suction hoseCheck hose, seal connections
Severe blockageClear Obstruction
Non return valve seizedReplace NRV
Impeller failedReturn for service
Pump has reduced pressurePartially blocked impellerReturn for service
Insufficient voltage from supplyCheck 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.