Question about Jandy Pool & Spa
Bob, sounds like it is working as designed. If the temp indicates 97, of course it won't fire if you set 84 as the temp (97) is already above that. When you set 100, it is higher than 97 and the unit attempts to raise the temp those 3 degrees. If you don't think the water is already at 97, then there is a calibration problem with the temp sensor.
Posted on Nov 26, 2014
Testimonial: "i might not have explained it right. the water temp is at 79, unit set at 84, reading on unit indicates that the water temp is at 97 but we know from actual water reading its 79"
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Posted on Jan 02, 2017
Anytime the heater is reading the water temp to be above what it actually is, especially 126, the problem is the Thermistor, or Temp Sensor, for the heater. This is a very easy part to replace. The Thermistor is located on the manifold, on the left side, between the top two bolts.
Sorry this is a late response! Hope that it helps!
Posted on Jul 10, 2009
This is a problem with your thermister (heat sensor) You will find this on the left side of the water manifold about half way down. I'm not sure but I think it is a small tube that slides into the manifold and if you follow the wires back to the board it just plugs in. The part is reasonable priced for a heater part and very easy to install. Good luck.
Posted on Dec 21, 2009
Check this by swapping your air sensor with your water sensor. (Just swap the plugs) if it still reads off then you may need a new board, if this reads ok then the new sensor may be bad. Good luck.
Posted on Jan 20, 2010
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