Ranco ETC-111000-000 Control

The Ranco ETC-111000-000 is an industrial-grade single-stage electronic temperature control engineered for high-precision switching in commercial refrigeration and HVAC systems. Built as a reliable digital upgrade for legacy electromechanical thermostats, this SPDT temperature controller features a broad operating range of -30°F to 220°F and a fully adjustable 1°F to 30°F differential. The unit supports multi-voltage input (120V, 208V, or 240V AC) and is housed in a rugged NEMA 1 enclosure, making it a versatile choice for condenser fan cycling, space heating, or walk-in cooler applications. A clear LCD readout provides real-time sensor data and relay status, while the integrated EEPROM memory ensures all programmed setpoints are retained during power loss. With a heavy-duty 16 Amp relay rating at 120V, this microprocessor-based control delivers stable performance and selectable heating/cooling modes for demanding professional environments.

• Universal Compatibility: Field-adjustable for 120/240V AC applications, reducing the need to carry multiple specialized controls on the truck.
• Precision Diagnostics: The backlit digital display and onboard error codes (E1, E2, EP) allow for rapid troubleshooting of sensor or memory issues.
• Flexible Installation: Includes a standard 8-foot NTC thermistor sensor that is extendable up to 400 feet, providing maximum placement flexibility in large facilities.
• Security Features: An internal keypad lockout switch prevents unauthorized setpoint adjustments by end-users or unauthorized personnel.
• Reliable Switching: Features a 1 HP rated relay designed to handle the high inrush currents typical of commercial compressors and motors.

How do I resolve an 'EP' error code on the display?
An 'EP' code typically indicates a probe failure. First, verify the sensor connections at the terminal block. If the wiring is secure, the NTC thermistor sensor may be open or shorted and requires replacement. Ensure you use an OEM-spec Ranco sensor to maintain calibration accuracy.

Can this control be used for both heating and cooling?
Yes. The Ranco ETC allows for easy switching between Cooling (C1) and Heating (H1) modes via the keypad. In cooling mode, the relay de-energizes when the temperature drops to the setpoint; in heating mode, it de-energizes when the temperature rises to the setpoint.

What is the maximum electrical load for the relay?
For the Normally Open (NO) contacts, the relay is rated for 16 Amps at 120V and 8 Amps at 240V. For Normally Closed (NC) operation, the rating is 8 Amps at 120V and 4 Amps at 240V. Always verify the full-load amperage (FLA) of your equipment before wiring.

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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.