Скачать или смотреть R-O-G-Y Wiring Test for Heat Pump Reversing Valve Activation

When troubleshooting thermostat cooling calls and heat pump wiring, understanding how R, G, Y, and O terminals interact is critical for correct operation and reliable HVAC performance. This guide explains thermostat cooling sequence wiring, how to test for twenty four volt continuity from the R terminal to O for the reversing valve, G for the fan, and Y for the compressor contactor, and offers practical testing tips like using a multimeter instead of jumpers, photographing original wire connections, and checking staged compressor wiring diagrams. Ideal for HVAC technicians, DIY homeowners, and contractors, this content covers thermostat wiring basics, heat pump reversing valve behavior, common cooling mode mistakes, safe testing practices, and how to verify terminal energization during a cooling call.

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thermostat wiring, heat pump wiring, R O G Y terminals, cooling mode troubleshooting, twenty four volt testing, multimeter HVAC testing, reversing valve activation, compressor contactor check, HVAC wiring tips, thermostat replacement guidance