MTI_1034
Service Bulletin Details
Public Details for: MTI_1034
This article provides hvac heater/defroster operating tips using mode selector dial. This includes the use of intermediate positions.
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Multi-Model (Equipped with Manual HVAC) Heater SYSTEM OPERATING TIPS This article provides HVAC heater/defroster operating tips using Mode selector dial. This includes the use of intermediate positions . Operating Tips For Manual HVAC To warm-up foot area quickly, you first need to consider if the windshield is fogged. Some customers set the MODE SELECTOR DIAL to . This position will provide best heater performance to foot area; however, defroster performance may be limited. If windshield fogging is present, use intermediate positions Temp between Fan and or and . Mode Intermediate Positions Mazda3 is shown The chart below shows the airflow ratio to Floor/Defroster at each mode including intermediate positions. 100% 90% 80% 70% 60% Airflow 50% Ratio 40% 30% 20% 10% 0% Airflow to heater foot area Airflow to defroster Airflow to heater foot area Mode Note: Once the cabin interior warms up to the desired temperature, change from Recirc Air mode to Outside to minimize windshield fogging. The flow chart below shows the best heater mode positions to heat the floor, including the usage of intermediate position between Floor and Defroster/Floor. Start Engine Set the mode to intermediate position between Floor and Defroster/Floor Set to Recirc mode Wait and see Wait and see Does windshield get foggy? Wait and see Adjust the mode to next one with more airflow to floor Yes Adjust the mode to next one with more defrost No No Is vehicle interior at desired temp? Yes Change from Recirc to Outside air mode Interior is too cold An editorial board comprised of MNAO service staff members generates, collects, and verifies information for this publication. © 2016 Mazda Motor of America, Inc.