Step by step
7Tie it to the original job
Keep the callback linked to the first job. Do not mark it unrelated to keep that job closed.
Write down · NoteRead the history first
List each visit for this symptom on this unit. Note what was changed and whether anyone named a likely cause.
Write down · NoteSeparate function from cause
Getting it running again shows the part was involved. It does not show why that part stopped working.
Write down · NoteTest the removed part
Have a qualified person bench test the removed part. A good part on the bench points toward the site.
Write down · ReadingCheck the site conditions
Have a qualified person look for water, surge, heat, overload, lubrication, contamination, or misalignment at the unit.
Write down · NoteCheck like units
If others share the same setup, look at them too. The same cause may be waiting there.
Write down · TaskClose it honestly
Record a breakdown repair if no cause is named, and book a follow-up. Name a correction only if the cause was addressed.
Write down · Decision
A finished run leaves the history, bench and site notes, the likely cause or open question, and a follow-up date.
General guidance for a qualified person, not a finding about any home. The person on site decides.