(start capacitor + potential relay) boosts aircon units and heat pump compressor torque by up to 300% to aid startup reducing startup time by 50%. Ideal for aging or weak compressors.
Purpose: Increases starting torque, reduces energy usage, and extends compressor life.
- Components: A large capacitor combined with a potential relay to disconnect the capacitor after the motor starts.
- Function: Specifically helps with low voltage, hot weather, or worn-out compressors by providing extra torque to overcome friction.
- Installation: Usually connected in parallel with the run capacitor on permanent split capacitor (PSC) systems.



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