Trane CNT7055 Control Display Assembly 321702-401 Bubbles generally signify a shortage

Bubbles generally signify a shortage of refrigerant or a pressure drop causing flash gas in the liquid line

80" WC threshold is met but the circuit remains open

Built to precise factory specifications

Whether you are performing a seasonal tune-up or a specialized field conversion

though NEMA 2 protection is best maintained with the conduit connection pointing down

Trane CNT7055 Control Display Assembly 321702-401 Bubbles generally signify a shortageThe Trane CNT7055 Control Display Assembly is a direct OEM replacement engineered for high performance HVAC system interfacing and diagnostics. Designed for seamless integration with compatible Trane and American Standard air handlers and package units, this digital control board assembly ensures precise communication between the system's logic controllers and the user interface. This specific module is critical for monitoring real time system status,