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QCA Spas 51777 Circuit Board, Q2002R1(x), Alt Replacement

  • Part Number: 51777
  • Chip Number: Q2002R1(x)
  • Manufactured by: QCA Spas


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Item Number: 22-2399

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

This money saving alternate replacement is for replacing QCA Spas 51777 circuit boards having a Q2002R1(x) chip number.
Tip: (x) = the last letter of your chip number.

This alternate circuit board will have a different serial number and a different chip number.
If you want to spend more money for a circuit board with the same number, you will need to click on the button (above) for all replacements too see if the original is stocked.
This alternate replacement is made by the same manufacturer with the same durability and quality.
This alternate replacement has been verified as a working replacement.
See below for feature changes or feature loss (if any).
See below for install instructions (if any are needed).
Cross Reference Verification
Step 1 of 2:
Make sure your circuit board's serial number is in this list.
Tip: The circuit board's serial number is on a sticker on the circuit board (this is not the box's number).
Tip: Only the first five digits are need to verify the serial number.
Tip: Sometimes the serial number is shown as P/N (part number).
Tip: The image above shows an example of a serial number sticker.

Serial Numbers:
  • 51777
  • BAL51777
Step 2 of 2:
Make sure your circuit board's chip number is in this list.
Tip: The whole chip number is on a sticker located on the circuit board.
Tip: This is a different sticker than the serial number sticker.
Tip: The image above shows an example of a chip number sticker.

Chip Numbers:
  • Q2002R1A
  • Q2002R1B
  • Q2002R1C
  • Q2002R1D
  • Q2002R1E
  • Q2002R1F
  • Q2002
  • Q2002R1
  • Q2002R1(x)
Additional Cross Ref., Compatibility & Installation
Changes in functionality for systems with a multiple speed air blower:
(Keep in mind, an air blower is NOT a jet pump.)
(If you have a single speed air blower the following does NOT apply.)
Some systems have a multi-speed air blower, however, this replacement circuit board will ONLY run the air blower on ONE SPEED.
To clarify: If your air blower has more than one speed - only ONE speed will be used.
Just simply choose ONE speed and do NOT wire the other speeds.
The original system jet pumps are fully compatible with this replacement circuit board.

Eveything else operates the same.
Other Replacement Options
For all cross reference replacements of this circuit board:

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Or contact us if you need help finding or selecting parts.
Control System Box Serial Numbers
This is not required for cross reference verification.

This circuit board is found in the following hot tub control system boxes (but not limited to).

Control System Box Serial Numbers:;
  • 51776
  • 51776-01
  • 51776-02
  • DU-Q2002-CCAH

  • Part Number: 51777
  • Chip Number: Q2002R1(x)

  • Manufactured by: QCA Spas
  • Item Number: 22-2399

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