Initial Inspection and Diagnostic Overview

NOTE: All A/C related tests should be run in an ambient temperature of at least 10°C (50°F).

1. Verify the customer concern by operating the system.

Visual Inspection Chart:

2. Visually inspect for obvious signs of mechanical or electrical damage.
3. If an obvious cause for an observed or reported concern is found, correct the cause (if possible) before proceeding to the next step.
4. If the concern is not visually evident, verify the symptom. GO to Symptom Chart. Symptom Related Diagnostic Procedures