Carrier HK02ZA395 Pressure Switch Els PW 17895 The X666401 is often used

The X666401 is often used in manufacturing sequences

If you see significant oxidation on the pilot hood or if the pilot flame is lazy and yellow even after cleaning

and V2568 series globe valves

this furnace flame sensor rod utilizes flame ionization technology to signal the control board

Carrier HK02ZA395 Pressure Switch Els PW 17895 The X666401 is often usedThe Carrier HK02ZA395 High Pressure Switch is a critical safety component designed for precise pressure monitoring in high side refrigeration circuits. Engineering as a genuine OEM replacement part, this switch protects your compressor from catastrophic failure by interrupting the control circuit when internal pressures exceed safe operating limits. This specific model features a high limit 406 PSI open threshold and an automatic 300 PSI close reset