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Marquis - 2000 Recreation Series - Troubleshooting Spa Low Speed Failure

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Catrock:
@cranbiz - I swapped the high speed and low speed connections. Once I flipped the breaker on - the relay flickered (non-technical term but that's what it seemed to do)  Then the high speed and low speed were both operational.  I turned off the breaker and put the low and high power connections back to their original relay connectors.  Powered the breaker on. 
Whatever happened the motor now operates properly low and high speeds and circulates the water while heating to temp (102) then the motor stops as it should under normal operations.
Sounds like the low speed relay had - for lack of technical term - stuck.  Swapping the power leads flushed out the stuck..
The spa has been running normal now for over a day. 
If the problem happens again I will know it's the relay or traces.
Thanks for your help.

Catrock:
~Well.  My spa ran for a few days.  The motor seemed to run too long - even when the heater was disengaged.   I pulled the PCB.  No signed of a burnt backing or traces  Probably going to replace the PCB.

cranbiz:
I would go ahead and find an electronics guy and replace the relays. Should be far cheaper than buying a new board.

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