Maintenance
Fault Finding and Diagnostics
Fault finding investigates a reported problem to identify its cause or narrow the possible causes. Diagnostics uses appropriate observations, measurements and tests to support the next repair, monitoring or replacement decision.
Discuss your requirementsMaintenance is work organised over time.
Investigate the cause behind the symptom
An alarm, intermittent trip or loss of output may have more than one explanation. Replacing the most obvious component without understanding the operating conditions can leave the original issue unresolved.
We define what needs investigating and use the findings to establish the next step. A diagnostic visit may produce a confirmed fault, a repair scope or a requirement for further evidence under different conditions.
Who this is for
For facilities teams, estate operators and managing agents dealing with recurring or unexplained faults, uncertain repair recommendations or equipment that behaves differently during inspection and normal use.
What the service covers
The agreed scope identifies systems, symptoms, available records and the investigation required. Outputs include observations, relevant measurements, conclusions and the proposed next action, with any unresolved question explained.
Typical activities
Review fault history, inspect the affected system, compare operation with the expected function and carry out relevant tests. Diagnostic work may need access to connected equipment, controls or service records beyond the component named in the original report.
How an investigation proceeds
We establish the symptoms and impact, review existing information, agree the test scope and arrange access. Findings are evaluated before recommending repair or further investigation. The report separates confirmed evidence from possible explanations.
Access and preparation
Provide error codes, times, conditions, asset details and earlier repairs. Explain whether the fault follows start-up, load changes or particular weather. Agree any shutdown or attendance needed to observe the equipment under representative conditions.
Responsibility and safety
Technical investigation is undertaken through the appropriate competence and safe-working arrangements. The client supplies known hazards and operating restrictions. HSE maintenance guidance explains why equipment work needs planning and suitable expertise.
Priorities and response
Urgent symptoms follow the relevant safety or emergency route. For ongoing investigations, we agree milestones and escalation when the evidence indicates a different risk or scope. Diagnosis and permanent repair retain separate completion points.
Asset and diagnostic records
We record the equipment, symptoms, test conditions, findings and limits of the investigation. Keeping the circumstances with each reading makes later comparisons useful and avoids treating a normal result under one condition as proof of all operating states.
What affects scope and cost?
Intermittent faults, complex systems, access, test equipment, specialist input and the time needed to reproduce symptoms affect cost. We define the initial investigation and explain what further work would answer before extending it.
Completion and follow-up
The handover states what was established, what remains uncertain and the next step. That may be a repair instruction, further testing or a defined observation period. Evidence and settings relevant to the investigation are retained in the work record.
Outcomes and our approach
You receive a reasoned basis for the next action. We connect symptoms to operating evidence so expenditure follows an understood requirement rather than repeated component replacement.
Locations we cover
We arrange investigations across Northumberland, Tyne and Wear, County Durham and Tees Valley, including Newcastle, Gateshead, Sunderland, Durham, Darlington and Middlesbrough. Timing may need to match the conditions in which the fault occurs. View all locations.
Frequently asked questions
Does a diagnostic visit include the repair?
The instruction defines whether a repair is included or needs a further decision. Diagnosis can establish the cause and required parts without completing the repair at the same attendance.
What if the fault does not occur during the visit?
We record the conditions observed and any tests completed, then identify useful next evidence. An intermittent fault may need monitoring or attendance when the relevant operating conditions are present.
Why are previous repair records useful?
They show what has already been changed and how the fault developed. This helps avoid repeating an investigation without considering earlier findings.
Can you investigate connected systems?
Yes, where their interfaces form part of the agreed scope. We identify additional access or specialist input needed to assess those connections.
Discuss a recurring or unexplained fault
Contact Black & White Facilities with asset details, symptoms, dates, operating conditions and previous reports. Include the impact on the site and access available for investigation.