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Standardized Connection: 1/4-18 NPT thread and DIN 43650 plug allow for fast
If the switch remains open (infinite resistance) despite verified suction from the motor
this is an Open Air Over (OAO) motor
The York S1-3948-3051 Suction Line Service Valve is a critical OEM replacement part designed for field technicians maintaining York commercial and residential HVAC systems
Whether you are performing a direct replacement or a new install
Carrier HH18HA147 Limit Switch L99H008 Standardized Connection: 1/4-18 NPT threadThe Carrier HH18HA147 Limit Switch is a critical safety component designed for precise thermal monitoring within furnace heat exchangers and air handlers. Engineered as a high limit protection device, this switch is a direct replacement for HH18HA147A and functions by opening the electrical circuit if internal plenum temperatures exceed safe operating parameters. This prevents thermal stress on the heat exchanger and ensures the system operates within
US$ 4425.00
US$ 23.00
US$ 23.00
US$ 216.22