This 2-1/2" face unit provides clear visual feedback of pressure signals from remote transmitters

the internal disc is likely defective and requires replacement

Check for a clogged air filter

Industrial Build Quality: Features 90A AFL (Inductive) and 120A Resistive ratings

water leaking into the furnace cabinet

Carrier 346040-75103 Drain Pan 320074-702 This 2-1/2" face unit providesThe Carrier 346040 75103 Drain Pan is a critical engineering component designed for high efficiency moisture management within HVAC condensate systems. As a veterans choice for evaporator coil maintenance, this condensate drain pan is engineered to withstand the rigorous thermal cycling common in modern air handlers. This specific model serves as the factory authorized direct replacement for 322838 753 and 332106 711, ensuring a seamless fit without