What to do if Carrier TP-NRH display module doesn’t power up?
- MMichael GlennAug 7, 2025
If the Carrier Thermostat display module doesn't power up, check the Rc/Rh and C terminals for 24VAC. Also, check the voltage between Vg and V+. Ensure the polarity is correct during wiring, as the display will not power up if the polarity is reversed.