結果 : what does o/b mean on thermostat
5:12

Heat Pump Thermostat O, B, and C Terminal Variations Explained

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what do the letters on your thermostat mean? tstat wiring explained #heating #thermostat #furnace

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Mistakes made when hooking up a thermostat Avoid them watch

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Heat Pump Thermostat Wiring Explained! Colors, Terminals, Functions, Circuit Path!

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0:39

What do the letters mean on a Honeywell thermostat?

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