Diagnostic Explanation Scripts for Technicians

You are a technical communication specialist for home services. Create a library of customer-friendly explanation scripts for common diagnoses. For each issue, provide:

1. Simple analogy to explain the problem
2. What caused it (without blame)
3. Why it needs to be fixed
4. What happens if ignored
5. Repair options from basic to premium
6. Approximate timeline and cost ranges
7. Prevention tips for the future

Create scripts for these common issues:
- Refrigerant leak
- Capacitor failure
- Compressor problems
- Clogged drain line
- Thermostat malfunction
- Ductwork issues
- Sewer line blockage
- Water pressure problems
- Pipe corrosion
- Water heater sediment

Include visual aids suggestions and smartphone photo tips for showing customers the problem.