
Temperature/Water Sensors
So you have your system installed, and have questions about using it, or need any help with troubleshooting? You can find an answer here.
Why no freeze sensor alarm behavior options?
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3 months ago
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captain11
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5.1K Messages
2 years ago
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simplistuckon
225 Messages
2 years ago
The switching part can be thermostatic switches, or a couple of cheap heating/cooling thermostats, wired in-series. Advantage of the cheap thermostats is you could adjust your upper and lower limits.
For thermostatic mechanical switches, there is cheap Chinese stuff to be had for $2.51 each, pick your temperature. At that price, you could run several in-series to decrease the odds of a fail-badly.
https://www.ebay.com/itm/352532552630
For the cold side thermostat, you would get a special low-temperature thermostat, which look to run $25-30.
https://www.homedepot.com/p/Honeywell-Home-Vertical-Non-Programmable-Thermostat-with-Low-Temperature-Range-CT50K1028/202039852
Not sure that one will have the required normally-closed contacts, so might have to re-purpose a replacement (or salvaged) refrigerator thermostat.
Curiously, looks like a water heater lower thermostat would be the right choice for the hot side. It is adjustable and will go to 125 F where a wall thermostat won't, and only costs $6.
https://www.homedepot.com/p/Camco-Lower-Thermostat-Therm-O-Disc-08123/301427027
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BillAggie
19 Messages
3 months ago
The temperature alerts are impossible to live with. My greenhouses are set to warn of temps below 40 degrees. Once an alert, it repeats every hour all day and night long. It is impossible to go to bed with this system because it'll wake you up all night long. There should be an option to not repeat alarms until the temperature reset above the trigger point occurs. I only need one freezer alarm to know to go take care of it. But alarms all night long means nobody sleeps.
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