The Carrier HH12ZB190 Limit Switch is a critical OEM safety component engineered for HVAC high-limit protection in gas furnaces and packaged units

Blue indicates a dry system

When troubleshooting HVAC sensor failure or 0130P00074 compatibility issues

Does this assembly include the gas orifices

Always refer to your specific regulator’s technical datasheet to confirm the correct cross-reference

Parker 20CC02PV4T2A Valve The Carrier HH12ZB190 Limit SwitchThe Parker 20CC02PV4T2A is a precision engineered 1 8" NPT solenoid valve designed for high reliability HVACR and industrial fluid control. Featuring a 2 way normally closed (N C) configuration, this direct acting valve provides a 0. 32 Cv flow coefficient, making it ideal for managing low flow media such as lubricated air, inert gases, and water petroleum products. The 303 stainless steel body and FKM (Viton) seals ensure superior chemical resistance