Diagnostic Starting Point - HVAC System - Manual

Begin the system diagnosis by reviewing the Air Delivery Description and Operation and the Air Temperature Description and Operation. Reviewing the Description and Operation information will help you determine the correct symptom diagnostic procedure when a malfunction exists. Reviewing the Description and Operation information will also help you determine if the condition described by the customer is normal operation. Refer to Symptoms - HVAC Systems - Manual in order to identify the correct procedure for diagnosing the system and where the procedure is located. Symptom Related Diagnostic Procedures