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Generator services

Generator fault-finding and diagnostics

EMPS investigates generator faults to establish the cause before corrective work is recommended. Diagnosis covers the engine, electrical output, controls and changeover functions relevant to the reported problem.

Record what happens

Note whether the generator fails to crank, cranks without starting, shuts down after starting, produces no output or fails to transfer the load. Record controller alarms and when the fault occurs. This information helps distinguish engine, electrical and control problems.

Test the affected systems

Tests are selected for the fault rather than applied indiscriminately. Investigation may cover the starting battery, starter and charging circuits, fuel supply, cooling, output measurements, controller inputs and transfer signals. Readings must be compared with the relevant equipment specifications.

Avoid repeated resets and bypasses

Do not bypass protective devices or repeatedly restart a generator that shuts down on a fault. Record the alarm and follow the manufacturer's shutdown instructions. Live electrical testing and changes to protection settings require suitably qualified personnel.

Repair recommendations based on findings

The findings determine whether the next step is servicing, wiring repair, component replacement, control adjustment or further investigation. Repairs and additional tests are explained before the work is agreed.

What to expect

Information for a diagnostic visit

The checks and work required depend on the generator model, its condition and the installation. We agree the work with you before proceeding.

  • Sequence from start command to fault
  • Manual and automatic operation symptoms
  • Alarm text or controller display photograph
  • Generator, engine and controller details
  • Recent servicing or electrical modifications
  • Site location and safe access arrangements
Project photographs

Project photographs

Photographs for this service will be added when suitable EMPS project images are available.

Service questions

Frequently asked questions

Which generator faults can you investigate?

Enquiries include starting failures, unexpected shutdowns, battery or charging problems, unstable output, controller alarms and failed automatic transfer. The tests depend on the equipment and symptoms.

Should I clear the alarm before calling?

Record the alarm and operating conditions first. Do not keep resetting a protective shutdown or bypass its cause. Follow the equipment's safety instructions and request assistance.

Is diagnosis included in a repair?

Diagnosis establishes what needs repairing. Tell us the symptoms when enquiring so that the diagnostic visit, any further testing and the subsequent repair can be agreed clearly.

Need help with generator fault-finding?

Send your location, generator details and service requirements to request a quotation.