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Heater to hot


Ab23

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Artisian Island spa 

I have a model 2013antiggua51DB  spa 

It’s throwing a M30 code heater to hot . 
I don’t see a thermostat only 2 sensors . When I disconnect these the spa goes into an alarm telling me these are working . 
I have a feeling it’s the cir pump . It’s running but not sure if it’s working right. 
 

thank you in advance 

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Have never seen that error code before. 

Best to post photos of the circuit board and the schematic on the inside cover of the spa pack so we know what you have and if anything is obvious to the trained eye. 

Recommend you remove the filters and reset the main power breaker. Leave the filters out until the issue is resolved. Remove them from the equation. Dirty filters are flow killers and lead to all types of possible error codes.

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