Temperature Reading Stuck

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25.08.2019, 20:51
ScottF83

Temperature Reading Stuck

Issue with my Profilux 3 temperature, the reading is either 20c if the probe is disconnected or 40c if connected

I was having trouble connecting to the control centre so I unplugged everything and took the unit to my PC to connect via USB. Whilst connected, I updated the firmware and everything looked okay.

Plugged all the connections back in at the aquarium, and now the temperature sensor doesn't work and the display is unreadable (very pale). The pins are all okay and nothing changed or damaged.

I've tried setting the display to 100% for day and night, I've tried a factory reset and also a temperature recalibration via the remote control feature on the PC.

All failed to fix the display or temperature reading

What else can I try?

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26.08.2019, 19:57
Vinny

Perhaps the probe has reached end of life.
Have you tried a new probe or putting it in an ice bath? If yes, what were the results?
26.08.2019, 20:17
ScottF83

Quote:

Originally Posted by Vinny

Perhaps the probe has reached end of life.
Have you tried a new probe or putting it in an ice bath? If yes, what were the results?

I haven't tried a new probe as I didn't want to spend the money if it turned out to be the unit. And with the display on the unit going bad, that was a real possibility.

The ice bath is interesting, I hadn't read about that before. I'll try it overnight.

Thank you

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27.08.2019, 20:54
ScottF83

The probe spent all of today in a jug of ice and water. I plugged it back in and its giving a sensible reading again!

I'm very grateful for the tip but I'm curious how and why it worked? And if this is just a temporary measure for probes near the end of their life?

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28.08.2019, 19:54
Vinny

The probe in the ice bath should show a value of 0° C or 32° F.
The results will show you if the displayed values when in reef temperatures were "off" or not.

If the probe begins to deviate again from the expected values, we recommend getting a new probe.
28.08.2019, 19:58
ScottF83

Quote:

Originally Posted by Vinny

The probe in the ice bath should show a value of 0° C or 32° F.
The results will show you if the displayed values when in reef temperatures were "off" or not.

If the probe begins to deviate again from the expected values, we recommend getting a new probe.

Oh I see, I didn't have the probe plugged in whilst in the ice but it's done the trick anyway. I also have a separate temperature controller and they now tally with similar figures.

Many thanks
Scott

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