Ridiculous reading on automation temp reader
- Thread starter Slpoolowner
- Start date
-
- Tags
- pentair 400
DrewLG
Gold Supporter
- May 31, 2022
- 674
- Pool Size
- 8000
- Surface
- Plaster
- Chlorine
- Salt Water Generator
- SWG Type
- Pentair Intellichlor IC-20
"255" looks suspiciously like the largest value they could store in one byte, which is another way of saying that the thermistor resistance is lower than they can measure, which is another way of saying that your temperature sensor is probably shorted. Maybe because water got into it, which happens.
You can buy a Pentair replacement for around $25, or an aftermarket sensor for a little less. Installation is easy: Look around your equipment pad for a hose clamp holding the old sensor onto one of the PVC pipes. Loosen the hose clamp and remove the old sensor, put the new sensor in the hole, tighten the hose clamp. Find where the old sensor's wires were attached inside the EasyTouch panel, and put the new sensor's wires on those terminals instead.
![PXL_20220804_003945904~2[1].jpg](https://www.troublefreepool.com/data/attachments/232/232416-30fd33c4bc14b0302251160e3615ce48.jpg "PXL_20220804_003945904~2[1].jpg")
You can buy a Pentair replacement for around $25, or an aftermarket sensor for a little less. Installation is easy: Look around your equipment pad for a hose clamp holding the old sensor onto one of the PVC pipes. Loosen the hose clamp and remove the old sensor, put the new sensor in the hole, tighten the hose clamp. Find where the old sensor's wires were attached inside the EasyTouch panel, and put the new sensor's wires on those terminals instead.
This worked! Thanks again.
)
This worked! Thanks! Reminder to everyone, use lube to re-sit the new temp sensor. I could not get a good seal till i used lube (No euphemisms please!
)
- Nov 12, 2017
- 12,657
- Pool Size
- 12300
- Surface
- Plaster
- Chlorine
- Salt Water Generator
- SWG Type
- Pentair Intellichlor IC-40
O-ring lube is not intended to fix a leaking seal. It is needed to facilitate the sealing, by allowing the o-ring to seat properly without bunching up or twisting out of shape. Did you use the old o-ring, or a new one? Did you clean all the surfaces that the o-ring touches? If you used a new ring and cleaned everything thoroughly, then you'll be fine. If you used the old ring, and/or didn't clean it or the other surfaces well, then the lube "fix" might only be temporary.