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Balboa 53984 Circuit Board BF05R2(x) Alt Repl, Bullfrog Spas 65-1620

Balboa 53984 Circuit Board BF05R2(x) Alt Repl, Bullfrog Spas 65-1620
  • Manufactured by: Balboa Water Group, Inc.
  • Part Number: 53984
  • Chip Number: BF05R2(x)

$457.45



Item Number: 22-2691

  • Description
  • Details
  • Reviews
Please read entire page before placing an order.

For a money saving option, give us a call and ask about getting your circuit board repaired.

This money saving alternate replacement circuit board is for replacing Balboa 53984 circuit boards having a BF05R2(x) chip number.

The Balboa 53984 BF05R2(x) circuit boards are also found in hot tubs made by Bullfrog Spas under the part numbers 65-1620, 651620.

Tip: The "(x)" shown above is shorthand for a range of last letters on BF05R2 chip numbers this alternate replacement circuit board can replace.

Please note: A list of chip numbers this alternate replacement circuit board can replace is specified in the CROSS REFERENCE VERIFICATION section below.

Please note: This alternate replacement circuit board is made by the same manufacturer, it is brand new, it is compatible with your system (unless specified otherwise in the ADDITIONAL CROSS REF., COMPATIBILITY & INSTALLATION section below), it has the same quality and durability.

Please note: This alternate repalcement circuit board will have different numbers.
Cross Reference Verification
Step 1 of 2:
Tip: Locate the serial number on the old circuit board being replaced.
Tip: The serial number is on a sticker on the old circuit board (not the box).
Tip: The serial number is shown on the sticker preceded by S/N or P/N (part number).
Tip: The image above shows an example of a serial number sticker (click image to enlarge it).

Verify the serial number on the old circuit board being replaced is in this list.

Serial Numbers:
  • 53984
  • BAL53984
  • 53984-01
  • 53984-02
  • 53984-03
  • 53984-04

Step 2 of 2:
Tip: Locate the chip number on the circuit board you are replacing.
Tip: The whole chip number is on a sticker located on the circuit board (not the box).
Tip: This is a different sticker than the serial number sticker.
Tip: The chip number sticker usually has two lines of text and the top line is the whole chip number (the bottom line is not needed).
Tip: See image above for an example of a chip number sticker and where they're typically found on the circuit board (click the image to enlarge it).

Verify the chip number on the circuit board being replaced placed is in this list.

Chip Numbers:
  • BF05R2A
  • BF05R2B
  • BF05R2C
  • BF05R2D
  • BF05R2E
  • BF05R2F
Additional Cross Ref., Compatibility & Installation
This alternate circuit board is a fully compatible replacement.

Set up instructions for this alternate circuit board as follows.

Turn all electricity OFF.

Set all wires on the new circuit board to match the positions of the wires on the old circuit board (no soldering needed).

Locate jumper J83 (CFG) on the new circuit board (it's just to the left of where the sensors plug in). Set J83's jumper sleeve on one pin.
For location reference, see image of circuit board above with red arrow labeled "Jumper Setting Example". You can click on the image to make it larger.
Do NOT adjust any other jumper pins on the board.

Now set dipswitches as follows.

Dipswitch bank A:
A1: off
A2: ON
A3: off
A4: off
A5: off
A6: off
A7: off
A8: off
A9: ON
A10: off
A11: off
A12: ON

Dipswitch bank B:
B1: off
B2: ON
B3: off
B4: off
B5: off
B6: off

Connect all equipment to the new circuit board the same as they were connected to the old circuit board.

Safely turn electricity on. After system boot up, make sure all of the features are working as expected.

Then turn all electricity OFF.

Set dipswitch A12 OFF.

Then safely turn electricity on.

Setup is now complete.
System Control Box Serial Numbers
Tip: The system control box is usually located below the hot tub and the circuit board mounts inside of it.

Please note: System control box serial numbers cannot identify a circuit board.
Please note: Do not use this section for confirmation of making the correct purchase.

The Balboa 53984 BF05R2(x) circuit board can be found in the following hot tub system control boxes (but not limited to).

System Control Box Serial Numbers:
  • 53983-01
  • 53983-02
  • 53983-03
  • 53983-04
Tip: When replacing a hot tub circuit board, testing the heater and replacing it (if bad), is recommended before installing or applying voltage on a new circuit board.
Note: A continuity test is not a sufficient heater test. Contact us by phone for more details on testing a heater.
See RELATED PRODUCTS below for heater replacements.

Tip: Burned circuit boards or burned heater relays are often due to a loose electrical connection or a bad heater or both.
If all connections are tight and if the heater is good then the heater relays are probably old and worn out.
If a burned relay was powering a pump and all electrical connections are tight then the relay is probably old and worn out or the pump might be bad or going bad or all three.
Replacing the heater and/or pump with a new one is recommended if any of those scenarios apply.

Tip: See RELATED PRODUCTS below for more Balboa 53984 BF05R2(x) replacement options.
Tip: Other items shown in RELATED PRODUCTS below have also been found in hot tub systems with Balboa 53984 BF05R2(x) circuit boards.

Unsure of what something on this page means?

Please contact us so we can better assist you.


  • Manufactured by: Balboa Water Group, Inc.
  • Part Number: 53984
  • Part Number: BF05R2(x)
  • Item Number: 22-2691


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