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Posted on October 7, 2022June 1, 2023 by Paul Barton — Leave a comment

Software Update Cheat Sheet in the 76840 Hawk Box and 76843 Control Panel Configuration

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In this post, we will walk you through a software update in your IQ2020 Hawk control box 76840 and how to pair and configure (or set the soft jumpers) to the 76843 control panel (topside).

Table of Contents

Step 1. Disconnect power to the tub.

software update

Step 2. Remove the control box cover.

Step 2. Remove the control box cover-

Step 3. Verify that the red wire is correctly connected. J17 is for permanently connected 230 volt spas. J13 is for 120 volt or 230 volt convertible spas.

Step 3. Verify Correct placement of wire-

Step 4. Locate the USB port and plug in the flash drive.

Step 4. Loacte USB port-

Step 4.5 Plug in flasg drive-

Step 5. Reconnect power to the tub.

Step 5. Reconnect power-

Step 6. The green BUS light will blink and the red heat light will turn on while the software is loading. This will last about 15 to 20 seconds. Then you will hear a click. The BUS light will turn solid green when the upload is complete.

Step 6. Green bus light-

Step 7. The new software version will appear on the control panel screen. Verify that the updated software matches the software on the control box configuration instructions.

Step 7. Verify the software-

Step 7.5 Verify the software on the instructions-

Step 8. Locate and press the SET UP (SW1) button.

Step 8. Locate and press the SW1 button-

Step 8.5 Press the SW1 button-

Step 9. Press the “SET” button on the control panel twice for the jumper settings menu.

Step 9. Press the set button twice-

Step 10. Find the jumper settings for your spa on the control box configuration instructions.

Step 10. Find the jumper settings-

Step 11. Begin setting soft jumpers.

Step 11. Set soft jumpers-

Step 12. Disconnect power to the tub.

Step 12. Disconnect Power-

Step 13. Remove the USB flash drive.

Step 13. Remove the USB flash drive-

Step 14. Reconnect power to the tub. You’re all done!

Step 14. Reconnect Power-

Watch The Video Here “Software Update in the 76840 Hawk Box and 76843 Control Panel Configuration”

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