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Balboa 53913 Extension Relay Circuit Board Alternate Replacement

  • Manufactured by: Balboa Water Group, Inc.
  • Part Number: 53913
  • Chip Number: Extension Relay


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Item Number: 22-4803

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Please read entire page before placing an order.

The Balboa 53913 extension relay circuit boards are also found in hot tubs made by Great Lakes Spas, GPM Spas, Hydro-Quip, Inc. and possibly others.
Please note: This alternate replacement circuit board is made by the same manufacturer, it is brand new, it is fully compatible with your system, it has the same quality and durability.

Please note: This alternate repalcement circuit board will have different numbers.
Cross Reference Verification
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:
  • 53913
  • BAL53913
Additional Cross Ref., Compatibility & Installation
This alternate replacement circuit board is fully compatible with the original system.

If a wiring diagram is shipped with this new circuit board (or emailed) then it shall override your existing wiring diagram.

Otherwise, set wires and/or jumper pins and/or dip switches on the new circuit board to match how they are on the existing circuit board (assuming the old circuit board is already set correctly as per the original wiring diagram on the existing control box).
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 53913 extension relay circuit board can be found in the following hot tub system control boxes (but not limited to).

System Control Box Serial Numbers:
  • 53724
  • 53724-01
  • 53724-02 (Great Lakes GVS511) 54373
  • 54373-01
  • 54373-02 (Great Lakes GVS511)
  • 55198 (Great Lakes GVS511SZ)
  • 54382-01
  • 54382-02
  • 54382-03
  • 54382-04
  • 54382-05 (Hydro-Quip VS511Z)
  • 53724
  • 53724-01
  • 53724-02 (GPM Spas GVS511)
  • 54373
  • 54373-01
  • 54373-02 (GPM GVS511)
  • 55198 (GPM GVS511SZ)
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: Balboa Water Group, Inc.
  • Part Number: 53913
  • Part Number: Extension Relay
  • Item Number: 22-4803

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