Which observation helps to find the cause? · Vacant property
Repair rental installation focuses on risk period, temporary access rights, coverage and withdrawal. Note when the problem started, which components were affected, and what changed shortly before that. Check the chain in sections and record where the operation is still present. Repeat the situation in which the error occurred after repair; a restart alone without a follow-up test provides insufficient certainty. We complete the check against tested coverage and clear agreements for use and termination of supervision.

