Facts and Information Page GS 102:

1 week of day school or 2 weeks of evening classes = 40+ hours of training

Gas Furnace Troubleshooting

Course Objective: The training program is designed to give students both a comprehensive understanding of the fundamentals of gas furnaces, concepts and the practical hands-on mechanical and electrical troubleshooting skills found in the trade.

Course Outline: The course is divided into three major troubleshooting sections.

Section 1: Mechanical
Gas burners and valves. Construction, tuning, adjustment, troubleshooting, orifice sizing, trouble shooting gas valves, pressure and combustion air adjustments. Ventilation air requirements and flue vent sizing system requirements for ventilation air and for flue gas vents. Furnace testing of furnaces for air flow, CO, and temperature rises and start ups (15% of class).

Section 2: Electrical
Electrical troubleshooting is taught using electrical wiring boards (wiring 5 different furnace control systems) interfaced with gas valves and burners for actual firing of systems (10% of class).

Section 3: Furnace Troubleshooting
Using HOP-SCOTCH troubleshooting, the student actually troubleshoots over 200 electrically "bugged" faults on 20 different furnaces. Troubleshooting includes: Gas furnace testing and trouble shooting sequence of operation of major types of combustion systems; trouble shooting of controls, transformers, fan blower and combustion motors, relays, thermostats, safety controls, combination fan and high limit control gas ignition systems; Troubleshooting - standing pilot, spark ignition and hot surface ignition (75% of class).

The students work with the instructor, and complete furnace start up.

Class Hours: 5 + Training Days. Class Hours: M-T-W-Th -F: Days 9:00 AM -5:00 PM.
2 weeks of evening classes 6:30 - 9:30 PM plus 2 full Saturdays
40 + hours total

Basic Classroom Instruction

Part 1 - WA2015-488 24 approved hours

Part 2 - WA2015-489 16 approved hours

Tools: All tools and equipment used in our shop and lab sessions are furnished by the school. with the exception of a VOM. Students will need to bring their own Fluke 116 meters.

Certification of Completion: Upon correctly diagnosing 100 "service calls" and demonstrating proficiency in troubleshooting all major furnace components and controls, a CERTIFICATION OF COMPLETION will be awarded.

To successfully complete the course, students demonstrate the ability to correctly electrically troubleshoot a furnace in six minutes or less.

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