Hello,
I've recently re-wired my hot tub to have full control over the heater and pumps. It was getting old (10+years) and the programmer was failing so it was a good time to upgrade.
All has been working perfectly, however I had a problem recently with heating the water and need to put a safeguard in place so it dosen't happen again.
I'm using a Fibaro Universal sensor to monitor the temperature of the water which works perfectly - until for unknown reasons it stops sending updates and sticks at one temperature until i execute Define / Sync which starts everything working again.
This happened a few nights ago and the pump / heater were on all night resulting in the hot tub being heated to 52 degrees and taking 3 days to cool down! The set temperature is 38 degrees.
The sensor updates about every 2 mins, so what i'd like to put in place is something to monitor the temperature (that sits in a variable) and if it doesn't change after a given time (15mins) then the heater and pump switches off and sends me an email alert.
Or is there someway of activating Define / Sync once a day to keep the sensor active?
What would be the best way to achieve this, or can anyone think of other ideas to stop the heater overheating.
Current Setup
Fibaro Universal sensor with 2 probes (one in the water, one fixed to the heater element)
The water temperature probe updates a variable (hottubtempact)
Unistat Plug-in to monitor the temperature and turn on the heater / pump as required via action groups.
2 x Fibaro switches through contractors to control the pumps.
Thanks in advance
Martin