Trane CTR6958 Control

The Trane CTR6958 Motor Protector and Oil Control is a critical diagnostic and safety component designed for commercial HVAC systems. Engineered as the direct OEM CNT1312 replacement, this module monitors differential oil pressure to prevent catastrophic bearing failure in Trane semi-hermetic compressors. It utilizes precise timing circuits to allow for pressure stabilization during startup, ensuring the system doesn't trip prematurely while providing a hard shutdown if lubrication levels fall below the required PSID. This solid-state control integrates seamlessly with existing wiring harnesses, maintaining the integrity of the safety loop. For technicians performing compressor maintenance or troubleshooting short-cycling issues, the CTR6958 provides reliable low oil pressure protection and motor overheating prevention. Replacing an aged Trane compressor control module with this genuine OEM HVAC part ensures long-term reliability and prevents expensive teardowns. Its robust housing and vibration-resistant internal components make it a standard for high-duty cycle industrial applications.

• Direct OEM Compatibility: Engineered specifically to replace the discontinued CNT1312 without requiring field modifications.
• Advanced Motor Protection: Monitors internal thermistors to prevent winding damage from thermal overload or phase loss.
• Precise Pressure Monitoring: Features a calibrated time-delay to ignore transient pressure drops during the start cycle.
• Solid-State Reliability: Designed to withstand the high-vibration environment of a mechanical room.
• Integrated Diagnostics: Simplifies troubleshooting for contractors by providing clear status indication for the lubrication system.

Common Questions

Is the CTR6958 compatible with older R-22 refrigeration systems?
Yes, this control is designed to monitor mechanical oil pumps and motor temperatures regardless of the refrigerant type, provided it is installed on compatible Trane compressor frames.

What should I check if the control is tripping frequently?
First, verify actual oil levels in the sight glass and check the oil pump screen for debris. If pressure is within spec, inspect the wiring to the oil pressure transducer and motor thermistors for high resistance.

Can I use an aftermarket oil safety switch instead of the CTR6958?
While universal switches exist, they often lack the integrated motor protection and specific timing logic required for Trane's specific compressor safety circuits, making the OEM CTR6958 the preferred choice for system longevity.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.