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Johnson Controls A421GEF-02C Electronic Temperature Control 100V/24 VAC, U1 Type, IP66/4X

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Special Price $174.88 Regular Price $201.11
In stock
SKU
A421GEF-02C
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HVAC Controls & Electrical, Control & Sensing Devices
Manufacturer:
https://www.partshnc.com/media/catalog/product/a/4/a421gef-02c.jpg

Specifications

  • Type: Line Voltage
  • Voltage: 24VAC
  • Control Range: -40 °F to 212 °F
  • Enclosure Type: NEMA 4X, IP66
  • Differential: 1 to 30 °F
  • Sensing Bulb Diameter: 1/4 inch
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Product Questions (2)
Customer Questions
What maintenance is required for the Johnson Controls A421GEF-02C Electronic Temperature Control?

Regularly inspect the control for dust, moisture, or loose wiring connections. Ensure the enclosure is sealed properly to maintain protection. Test the device periodically to confirm accurate temperature readings. Proper maintenance ensures reliable and safe system operation.

What are common issues with the Johnson Controls A421GEF-02C Electronic Temperature Control?

  • Inaccurate or drifting temperature readings.
  • Device failing to switch or respond correctly.
  • Moisture ingress affecting electronics.
  • Loose or corroded terminals causing intermittent operation.

Installation Steps

Step 1: Turn off power to the circuit to avoid electric shock.

Step 2: Mount the control in a location protected from water and debris, ensuring compliance.

Step 3: Connect the power supply according to the wiring diagram.

Step 4: Secure all terminals and confirm proper grounding.

Step 5: Power on and test the unit to ensure accurate temperature readings and operation.