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Hi,
I had a SN3 error, so I replaced the two sensors as a unit. When I refilled and powered up it heated up to temp just fine but now the heater will not com on.
I do not get a red heat on light. The jets are working just fine.
This is a 1996 Dimention One
Bill ><>
Then you are not getting a call for heat if the indicator is not coming on. You may want to remove the filter and put it in a heat call to see if the indicator comes on. This is done to see if you are have a water flow issue preventing the heater from coming on.
It turned out to be the Ozone. One of the air tube got kinked. When I straightened it out the Ozone and the heater came on!
Now I have an SN3 error again... what else could this be?
Typically SN3 is a sign for a malfunctioning temperature sensor. You may want to double check the connection of the sensor.