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Balboa 50973 Circuit Board MAS200R1(x) Alt Repl, No Blwr, Master Spas

Balboa 50973 Circuit Board MAS200R1(x) Alt Repl, No Blwr, Master Spas
Balboa 50973 Circuit Board MAS200R1(x) Alt Repl, No Blwr, Master Spas
Balboa 50973 Circuit Board MAS200R1(x) Alt Repl, No Blwr, Master Spas

  • Manufactured by: Balboa Water Group, Inc.
  • Part Number: 50973
  • Chip Number: MAS200R1(x)

$428.03



Item Number: 22-2899-B

  • 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 50973 circuit boards having a MAS200R1(x) chip number.

The Balboa 50973 MAS200R1(x) circuit boards are also found in hot tubs made by Master Spas, Inc. and possibly others.

Tip: The "(x)" shown above is shorthand for a range of last letters on MAS200R1 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:
  • 50973
  • BAL50973

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:
  • MAS200R1A
  • MAS200R1B
  • MAS200R1C
  • MAS200R1D
  • MAS200R1E
  • MAS200R1F
Additional Cross Ref., Compatibility & Installation
This alternate replacement package is for hot tub systems with no air blower.
Tip: an air blower is not a jet pump but may look and sound like one.
Tip: if your system has an air blower, usually the topside panel will have a button labeled Blower or Aux.

You can order a cheaper replacement if your hot tub doesn't have an air blower.
See Related Products below.

This package includes an alternate replacement circuit board and a compatible topside control panel (keypad)
The old (original) topside panel is outdated and not compatible.

ATTENTION: Some of these hot tub systems have an optional auxiliary topside panel that is also outdated and not compatible with this alternate replacement circuit board.
If you have an optional auxiliary topside panel, please call us with its part number before placing this order to inquire if a compatible auxilary topside is available.
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.

Tip: See RELATED PRODUCTS below for more Balboa 50973 MAS200R1(x) replacement options.

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: 50973
  • Part Number: MAS200R1(x)
  • Item Number: 22-2899-B


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