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Heat-pump fault diagnosis — Heat-pump installer
Give the equipment model, displayed warning and a description of when heating or hot water changed. Note recent servicing, power interruptions or control changes, but do not open the equipment or attempt specialist adjustments; the provider needs a reliable symptom history rather than a guessed replacement part.
Service scope
Investigation of a heat-pump fault, warning or loss of heating or hot water, considering equipment, controls, distribution and installation context. Diagnosis precedes repair; a fault code or cold room does not automatically identify a failed compressor, refrigerant problem or replaceable component.
What is normally included
- Symptom and warning review
- Professional system diagnosis
- Repair or specialist-support recommendation
What is not included
- Customer refrigerant or internal electrical work
- Guaranteed repair from an error code alone
Typical tasks
- Triage the reported loss of service
- Review model and warning information
- Assess relevant system interfaces
- Identify repair or support requirements
- Explain the findings and next steps
What to include in your brief
- Heat-pump and controller models
- Warning or error text
- Affected heating or hot-water function
- Recent changes
- Installation and service history
Choosing the right professional
Ask whether the first appointment is diagnostic and whether the provider supports the model and system type. The scope should explain manufacturer escalation and any separate distribution or electrical work rather than promising an immediate component swap.
Important considerations
- Different faults can produce similar comfort symptoms
- Continued operation may be inappropriate where damage or a safety concern is present
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