Johnson Controls A419ABC-1C Single Stage Temperature Controller without Sensor

Johnson Controls A419ABC-1C Electronic Temperature Controller

Single Stage Digital Temperature Control – A419 Series – NEMA Enclosure

TheJohnson Controls A419ABC-1Cis a professional-gradeelectronic temperature controllerdesigned for precise heating or cooling control in HVAC, refrigeration, hydronic, and industrial applications. This model belongs to the widely usedA419 Series Electronic Temperature Controls, known for reliability, accuracy, and simple field configuration.

The controller features aSingle-Pole Double-Throw (SPDT) output relay, athree-button touchpad, and aLiquid Crystal Display (LCD)that continuously shows the sensed temperature and system status. A front-panelLED indicatordisplays the output relay status for quick diagnostics.

This unit is suitable for systems requiring dependable temperature management, including:

✔ Refrigeration systems
✔ Heating equipment
✔ Cooling equipment
✔ Fermentation / brewing control
✔ Walk-in coolers / freezers
✔ Hydronic systems
✔ Process temperature control
✔ Equipment protection & limit control

Key Functional Features

•Single-Stage Electronic Temperature Control
•Heating & Cooling Modes(field selectable)
•Adjustable Setpoint & Differential
•Anti-Short Cycle Delay (ASd)– protects compressors
•Temperature Offset (OFS)capability
•Sensor Failure Operation (SF)protection logic
•LCD Display with Status Icons
•Three-Button Touchpad Interface
•LED Output Relay Indicator

Technical Characteristics (From Documentation / Labels)

•Series:A419 Series Electronic Temperature Controls
•Control Type:Single Stage
•Output Relay:SPDT (Single-Pole Double-Throw)
•Temperature Display:LCD (Liquid Crystal Display)

Setpoint Range

-30 to 212°F
(-34 to 100°C)
1-degree increments

Differential (dIF)

Adjustable from1 to 30°F / °C

Anti-Short Cycle Delay (ASd)

Adjustable from0 to 12 minutes

Temperature Offset (OFS)

Adjustable offset correction

Sensor Failure Modes

Selectablecontinuous runorshutdown protection

Power / Electrical Compatibility

Compatible with multiple system voltages depending on wiring configuration:

•24 VAC Applications
•120 VAC Applications
•240 VAC Applications

Sensor Information

• UsesJohnson Controls / PENN A99 Temperature Sensors
• Sensors arenot polarity sensitive
• Recommended sensor wiring per manual guidelines

Maximum recommended sensor cable lengths:

•16 AWG → 500 ft (150 m)
•18 AWG → 300 ft (100 m)
•20 AWG → 200 ft (60 m)
•22 AWG → 125 ft (40 m)

For cable runs over50 ft (15.2 m)→ twisted-pair shielded cable recommended.

Enclosure / Mounting

The A419 control is available in:

•NEMA 1 Enclosure
•NEMA 4X Watertight Enclosure(model dependent)

Not position sensitive – can be mounted for convenient wiring and adjustment.

Compliance & Safety Statements

• Designed to comply withFCC Part 15requirements
• Canadian Class A digital apparatus compliance
• Industrial / commercial use device

This controller is commonly searched for and used as:

• Digital temperature controller
• HVAC temperature control
• Refrigeration temperature control
• Fermentation temperature controller
• Cooling thermostat controller
• Heating process controller
• Compressor protection controller
• Walk-in cooler temperature control
• Freezer temperature controller
• Industrial temperature regulator

Compatible Sensor:Johnson Controls A99 - IS NOT includedNew old Stock / unused item. Original retail packaging is included. The item has never been installed or put into service. Please review all images carefully. If something is not visible in the pictures, it is not included in the sale. Original box may show shelf wear, scuffs, or minor cosmetic imperfections due to long-term warehouse storage. Product itself is unused.