Fail-Safe Operation: A spring return mechanism ensures the valve defaults to the closed position to protect the system during electrical failures

This Lochinvar control board is typically plug-and-play for designated models

This heavy-duty disc is designed for a 1-1/2 inch valve body and features a flow coefficient (CV) of 25

If the inducer is running but the switch remains open

its specific setpoints are optimized for condenser fan cycling rather than standard low-pressure safety cut-out applications

Carrier HT31AZ121 Crankcase Heater 326010-701 Fail-Safe Operation: A spring returnThe Carrier HT31AZ121 Crankcase Heater is a critical component for maintaining compressor reliability in commercial and residential refrigeration systems. This insertion type heater is specifically engineered for Carrier 05T and 06T compressors, as well as the 5H series (5H40, 5H60, 5H80, 5H120). By providing 200 Watts of targeted heat at 120 Volts, it ensures that the compressor oil remains at a temperature higher than the coldest part of the