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Cal Spa ELE09100209 Circuit Board C2105R1(x), Balboa

  • Manufactured by: Cal Spa
  • Part Number: ELE09100209
  • Chip Number: C2105R1(x)

$431.67

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Item Number: 22-3688

  • 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 new OEM circuit board is for replacing Cal Spa ELE09100209 circuit boards having a C2105R1(x) chip number.
The ELE09100209 part number may also be shown as CALELE09100209, 09100209.

The Cal Spa ELE09100209 C2105R1(x) circuit boards are manufactured by Balboa Water Group, Inc..

Tip: The "(x)" shown above is shorthand for a range of last letters on C2105R1 chip numbers this circuit board can replace.

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

Please Note: The numbers on the new circuit board you receive may be different and the components may look slightly different but it will still connect the same and it is a fully compatible OEM replacement , unless specified otherwise in the ADDITIONAL CROSS REF., COMPATIBILITY & INSTALLATION section below.

Cross Reference Verification
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: 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:
  • 2105R1A
  • 2105R1B
  • 2105R1C
  • C2105R1A
  • C2105R1B
  • C2105R1C
  • CS2105R1A
  • CS2105R1B
  • CS2105R1C
Additional Cross Ref., Compatibility & Installation
ATTENTION: This replacement circuit board can only be used to replace circuit boards with chip number 2105R1(x).
Tip: notice the "R1".
Tip: if your circuit board's chip number has "R2", you will need another replacement.
Please contact us for availability on "R2" replacements.
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.

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.

Unsure of what something on this page means?

Please contact us so we can better assist you.


  • Manufactured by: Cal Spa
  • Part Number: ELE09100209
  • Part Number: C2105R1(x)
  • Item Number: 22-3688


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