Different Water Temperature Readings on Jandy Aquapure Control Center vs PDA

[wuthrirc]

When I check the water temperature on my Aqualink Control Center by quickly pressing the Pool Temp Boost button, it shows 85 degrees which I believe is correct. However, when I power on the AquaLink PDA, it shows the water temp is 120 degrees. This difference in readings started about 1 week ago. Is there only 1 water temperature sensor? If so, why the 2 different readings? I am concerned that this will affect Freeze Protect mode this winter. Ideas on how to resolve this issue?

 

[PoolGate]

Your panel uses the tri-sensor in the saltwater chlorine generator. The PDA uses the pool's temperature sensor. So yes, they are reading two different temps. I would say your pool temp sensor has gone bad.

 

[wuthrirc]

Your panel uses the tri-sensor in the saltwater chlorine generator. The PDA uses the pool's temperature sensor. So yes, they are reading two different temps. I would say your pool temp sensor has gone bad.

That makes sense. Thanks! Does the Freeze Protect mode use the reading from the tri-sensor or the pool temperature sensor?

 

[PoolGate]

Sorry - Air temperature sensor. You have 3 temp sensors. Air, pool water, and SWG pool water.

 

[PoolGate]

The TRI sensor only pertains to the swg. It measures temperature, salinity and flow.

 

[JamesW]

Does the Freeze Protect mode use the reading from the tri-sensor or the pool temperature sensor?

It should use the Air temperature sensor.

 

[JamesW]

The arrow points to the water temperature sensor.

Also, it looks like your filter might have a crack.

 

[JamesW]

Cell trisensor senses temperature, salinity and flow.

 

[PoolGate]

It should use the Air temperature sensor.

View attachment 352801

You know what? It is possible his sensors are reversed.

 

[JamesW]

You know what? It is possible his sensors are reversed.

Possible if the air sensor is in the sun, but I would think that the problem would have been noticed earlier.

 

[PoolGate]

Try (carefully) blowing a hair-dryer on the air temp sensor and see which temperature reading increases on your PDA. It is usually located underneath your Aqualink cabinet.

 

[wuthrirc]

The arrow points to the water temperature sensor.

Also, it looks like your filter might have a crack.

View attachment 352804

Haha! That picture was after Snowmageddon. We had to replace the filter and pump body! We have never winterized before. Guess we will this year. Thanks for identifying the water temperature sensor that will also have to be replaced.

 

[PoolGate]

Haha! That picture was after Snowmageddon. We had to replace the filter and pump body! We have never winterized before. Guess we will this year. Thanks for identifying the water temperature sensor that will also have to be replaced.

Did you try a hairdryer?

 

[wuthrirc]

Did you try a hairdryer?

Yes. The air temp went up. So it looks like it is good, but the water temp sensor is bad. Thanks

 

[HermanTX]

Yes. The air temp went up. So it looks like it is good, but the water temp sensor is bad. Thanks

On your PDA there may be a selection on the settings to calibrate your water sensor. You may want to try that if it is on your model of PDA.

 

[JamesW]

120 is too far off to calibrate.

Need to replace the sensor.

 

[wuthrirc]

Problem solved. It was a bad water temperature sensor. Ordered one off Amazon and got it replaced today...with the help of the hubby. I couldn't get one of the screws on the power panel off . Thanks for all the help!! It's so great to have this resource available. I feel so empowered when I (we) can do the work instead of calling a pool service.

 

[JamesW]

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