HVAC: TRANE RTU Not Heating (Controls Upgrade And Troubleshooting/Diagnostics) Trane Voyager Series

In HVAC, RTU stands for Rooftop Unit, a self-contained, packaged system that provides heating, ventilation, and air conditioning (HVAC) for commercial buildings, housing all components like the compressor, condenser, evaporator, and air handler in one box, usually on the roof to save interior space and use ductwork for air distribution. They are popular for retail, office, and school buildings for their integrated design, simplifying installation and maintenance compared to larger, custom systems. The RTU is usually a direct-expansion unitary system, which means that the air is cooled by a refrigerant, and can be either fan-cooled or water-cooled. Heat can be produced by gas, electric, or water. How an RTU works is first, air returns back to the packaged rooftop unit from the space the unit is ventilating. Some units also mix outdoor air with the returning air to produce fresher air for the space. The air then moves through the filters. Then it continues to the evaporator coil which chills air by running it over refrigerant in the coil. The air then flows through a blower, leaving it conditioned and ready for the space. Some units have small heating elements near the blower to further adjust the air’s humidity. There is usually a clear, insulated divide between the evaporator coils that cool the return air, and the condenser coils and compressor that eject heat to the atmosphere. A basic thermostat typically controls packaged rooftop units. However, depending on the application they can be a part of a more complex control system. GoPro HERO13 Black (Camera Used In This Video) https://amzn.to/3RUYsYC​ GoPro Head Strap https://amzn.to/4iUff91​ DEGGE Compressed Air Duster https://amzn.to/4qHYzqG​ Appion MGAVCT Valve Core Removal Tool https://amzn.to/4iAQpfk​ Veto Pro Pac TECH MC https://amzn.to/3gURJyZ​ Fluke 902 FC HVAC True-RMS Clamp Meter https://amzn.to/39wvwiK​​​ Fieldpiece ADK7 Deluxe Silicone Test Lead Kit https://amzn.to/3VNYXDv​ MULWARK Right Angle Screwdriver Mini Ratchet Wrench Set https://amzn.to/41rGlOg​ Klein Tools ET600 Megohmmeter Insulation Tester https://amzn.to/409iNvu​ Supco M500 Insulation Tester/Electronic Megohmmeter https://amzn.to/42oy0ua​ Fluke 1AC-A1-II VoltAlert Non-Contact Voltage Tester https://amzn.to/3FcWElQ​ Fieldpiece JL3KR4 HVACR Charge Kit (Digital Gauges/Probes) https://amzn.to/3E4W0Fr​ Fieldpiece SPK2 Folding Pocket In-Duct Thermometer https://amzn.to/3mi8Fih​ Fieldpiece SPK3 Folding ROD Dual Temperature Thermometer https://amzn.to/3FbDufQ​ Klein Tools Impact Rated 11-in-1 Screwdriver / Nut Driver https://amzn.to/4eJ7Au0​ Milwaukee M12 2-Tool Combo Kit 2598-22 https://amzn.to/3CtCRNC​ Milwaukee Cut 1 Dipped GLOVES L https://amzn.to/3s8H18O​​ Milwaukee 2351-20 M12 LED Stick Light https://amzn.to/3rVJKEK​ Milwaukee 48-22-1985 Fastback Hawk Bill Folding Knife https://amzn.to/3e53ygW​ Milwaukee 48-22-1500 Fastback Compact Folding Utility Knife https://amzn.to/3qazJkC​ Milwaukee 48-22-4041 Iron Carbide Core Large-Looped Jobsite Scissors https://amzn.to/32fxC6I​ Milwaukee 4932459097 Billet Torpedo Level https://amzn.to/30Dh6Nw​ Milwaukee Wide Blade Magnetic Tape Measure 16 FT https://amzn.to/3yEN7kL​ Klein Tools 11-in-1 Screwdriver / Nut Driver https://amzn.to/3s3o8ql​ Klein Tools 32561 Multi-Bit Screwdriver / Nut Driver 6-in-1 https://amzn.to/3e4ur4x​ Klein Tools 32807MAG 7-in-1 Nut Driver, Magnetic Driver https://amzn.to/321n4bW​ Klein Tools 600-4 1/4-Inch Keystone Cushion-Grip Screwdriver https://amzn.to/3J11hS1​ Klein Tools 32581 4-in-1 Electronics Screwdriver Set https://amzn.to/3yEj3WC​ Klein Tools LLK12 L-Style Hex Key Caddy Set 12-Piece (Metric/Sae) https://amzn.to/3yRUiGJ​ Yellow Jacket 18975 Charge Tool https://amzn.to/3J4pfvJ​ Yellow Jacket 60613 Service ratchet Wrench https://amzn.to/3E8iYeZ​ Yellow Jacket 19173 5/16" Female Quick Couplers x 1/4" Male Flare https://amzn.to/3q0TQ4M​ Crescent 2 Pc. X6 4-in-1 Black Oxide Spline Ratcheting SAE Wrench Set https://amzn.to/3qqKlw7​ Crescent 4" Adjustable Cushion Grip Wrench https://amzn.to/3J4qsmL​ Knipex 09 08 240 SBA 9.5-Inch Insulated Ultra-High Leverage Lineman's Pliers (1000v) https://amzn.to/30EQmw5​ Knipex 09 11 240 9.5-Inch Ultra-High Leverage Lineman's Pliers with Fish Tape Puller and Crimper https://amzn.to/3H9iYAu​ KNIPEX Tools - Long Nose Pliers With Cutter, 1000V Insulated https://amzn.to/3e3IEi7​ KNIPEX Tools - Long Nose Pliers With Cutter https://amzn.to/3gUSE2i​ KNIPEX Tools 98 62 02, Flat Nose Plastic Pliers 1000V Insulated https://amzn.to/3p6lFsZ​ KNIPEX - 74 08 200 - High Leverage Diagonal Cutters, 1000V Insulated https://amzn.to/3mh8K5U​ KNIPEX - 74 01 200 Tools - High Leverage Diagonal Cutters https://amzn.to/3F1VScb​ KNIPEX Tools - Cobra QuickSet Pump Pliers, 1000V Insulated https://amzn.to/3sftr5Q​ KNIPEX Tools 3 Piece Cobra Pliers Set https://amzn.to/3FbRwy7​ KNIPEX Tools Pliers Wrench 3-Piece Set https://amzn.to/3nnRLfW​