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Hardie RJC-FOUR Controller: Obsolete Model Replacement Options

Locating Vintage Hardie RJC-FOUR 4-Station Controller

A former contractor seeks an RJC-FOUR (1986 vintage) push-button 4-station controller that shared microcontroller/chassis with RJC-SIX rotary dial model. RJC-44 may be updated version.

Availability Reality

These controllers are 35+ years old. New-old-stock virtually impossible. Cosmetically clean used units extremely rare. Not practical for functional installation.

Recommended Modern Replacements

Irritrol Rain Dial: Direct descendant (Hardie → Irritrol), similar programming logic
Rain Bird ESP Series: Modular, reliable, widely supported
Both install easily, last 15+ years, cost $100-200

Where to Search (If Insistent)

Sprinkler World of Arizona: 602-954-9022 (Dale) - specializes in vintage parts
eBay/Etsy occasional listings
Irrigation contractor "bone yards"

Practical Advice

Invest in modern controller. RJC-FOUR lacks seasonal adjust, multiple programs, sensor inputs, and surge protection. Modern units pay for themselves in water savings and reliability.

Irrigation: Hardie 9‑Station Controller Replacement: Irritrol Rain Dial; Hardie Irrigation System Runs Continuously: Valve vs Controller Diagnosis; Hardie RD-600 Display Frozen After Power Outage: Controller Failure; Hardie RD-1200 Battery Drain: Replace Panel, Not Whole Controller; Hardie Controller Manual Station Error: Replace Panel or Upgrade to Rain Dial; Hardie 446PR Display Garbled: Reset or Replace; Hardie Slim Line Controller Dim/Broken Display—Replacement Needed; Hardie Total Control TC-15B "Error - 1" After Freeze; Hardie Controller Runs Continuously: Valve or Controller Fault?; Hardie HR6200 Fuse Holder Replacement: Contact Irritrol (Toro)

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