REPLACING THE RICHMAT HJC18 CONTROL BOX SAFELY

Replacing the Richmat HJC18 Control Box Safely

Replacing the Richmat HJC18 Control Box Safely

Blog Article

Replacing the Richmat HJC18 Control Box Safely


If you own an adjustable bed, medical recliner, or lift chair that uses a Richmat HJC18 control box, you may encounter the need to replace it at some point. Whether due to electrical failure, malfunctioning controls, or wear over time, replacing the control box can restore full functionality to your motorized equipment. But as with any electrical component, safety and precision are key.


In this guide, we’ll walk you through everything you need to know to safely and effectively replace your Richmat HJC18 control box—from identifying the issue and choosing a replacement, to proper installation and post-replacement testing.Richmat HJC18 Control box Replacement






What Is the Richmat HJC18 Control Box?


The Richmat HJC18 is a compact control unit commonly used in adjustable bed frames and other motion furniture. It acts as the central brain, connecting motors to the wired or wireless remote controls. The control box interprets user commands and powers the appropriate actuator(s) to move the headrest, footrest, or full lift mechanism.


These boxes are typically:





  • Connected via plug-and-play ports to DC motors




  • Powered by AC electricity




  • Designed with safety cutoffs and overheat protection




  • Configured to work with specific Richmat hand controls (wired or Bluetooth)







When Should You Replace the HJC18 Control Box?


Before deciding on a replacement, confirm that the control box is the actual cause of the issue. Some symptoms that may indicate the control box has failed include:





  • Remote lights up, but motors don’t respond




  • Clicking sounds but no movement




  • One motor works, the other does not (after ruling out motor failure)




  • Burnt smell or visible damage on the unit




  • Device functions intermittently or stops after moving for a few seconds




Important: Always rule out remote failure, loose cables, or blown fuses before replacing the control box.






Safety First: What You’ll Need


Before beginning the replacement process, gather the following tools and safety equipment:





  • Replacement Richmat HJC18 control box (exact model or compatible variant)




  • Phillips-head screwdriver (if needed for housing)




  • Flashlight (if working under a bed or chair)




  • Voltage tester (to ensure no residual current)




  • Cable ties (for re-securing wires)




  • Anti-static wrist strap (recommended)




  • Owner’s manual or wiring diagram (if available)







Step-by-Step Guide: Replacing the HJC18 Control Box


Step 1: Unplug Everything


Start by unplugging the power cord from the wall. Wait a few minutes to allow any stored electricity in capacitors to dissipate.




Tip: If your bed has a backup battery system, disconnect it as well.



Step 2: Locate the Control Box


Most Richmat control boxes are mounted to the bed frame or base using clips or screws. Follow the cable from your remote or motor to find the control unit.


You’ll see:





  • Power cord input




  • Motor outputs (usually labeled M1, M2, etc.)




  • Remote control input(s)




  • Optional massage motor connectors




Step 3: Take Photos Before Disconnecting


Before removing any wires, take clear photos of how everything is connected. This will be essential for reconnecting cables correctly later.



Step 4: Disconnect All Cables


Gently unplug all cables one by one. Some may have locking tabs—press these to release without forcing the connectors.


Label the cables with masking tape if needed.



Step 5: Remove the Old Control Box


Depending on the model, the box may be secured with screws or slide clips. Use a screwdriver or release latch as needed to remove it from the frame.


Inspect the old box for any visible damage like burn marks, melted plastic, or corrosion.






Choosing the Right Replacement


When ordering a new control box, make sure it matches the exact Richmat HJC18 model number. Variants may differ in:





  • Connector types




  • Motor capacity




  • Remote compatibility




  • Bluetooth/Wi-Fi features




Check:





  • Model number (e.g., HJC18-4, HJC18-6)




  • Voltage (typically 29V or 24V DC)




  • Number of ports




  • Shape and mounting style




If unsure, contact the manufacturer or vendor for compatibility verification.






Installing the New HJC18 Control Box


Step 6: Mount the New Control Box


Position the new box where the old one was, ensuring the mounting clips or screws are secure but not overtightened.



Step 7: Reconnect the Cables


Using your reference photos, reconnect all the cables to the correct ports. Double-check:





  • Remote goes into the “HAND CONTROL” or “CTRL” port




  • Motors connect to matching ports (M1, M2, etc.)




  • Power supply plugged into AC IN or similar port




Avoid bending the pins or forcing connections—they should insert smoothly.



Step 8: Power Up Safely


Plug the power cord back into the outlet. Stand clear of the moving parts, and have your remote handy.






Step 9: Test the System


Use the remote to test:





  • Head and foot lift functions




  • Massage motors (if available)




  • Memory presets (if applicable)




  • Bluetooth connectivity (if supported)




Listen for unusual noises or jerky movement. If the system behaves abnormally, power off and check connections again.






Post-Replacement Tips




  • Cable Management: Use cable ties to secure wires and prevent snagging or damage during movement.




  • Avoid Overheating: Give motors time to cool between repeated uses. The control box has built-in thermal protection, but it’s best to avoid stressing the system.




  • Keep Your Manual: Store the installation instructions and wiring diagram in a safe place for future reference.




  • Consider a Surge Protector: To protect your new control box from power spikes, plug it into a surge-protected outlet.







When to Call a Professional


If you’re uncomfortable with electronics, wiring, or handling tools, it’s better to consult a technician. Incorrect installation could void your warranty or cause further damage.


Also, if the control box failed due to another component (e.g., a shorted motor), replacing it alone won’t fix the problem. A professional can diagnose the root cause.






Conclusion


Replacing your Richmat HJC18 control box is a straightforward task when done methodically and safely. By taking the proper precautions—unplugging power, labeling cables, and double-checking connections—you can restore your adjustable furniture’s functionality without costly service calls.


With a little preparation and care, you can successfully tackle the repair yourself and enjoy your adjustable bed or recliner for years to come.

Report this page