Eheim Jager heater problems

Tovar921 · Dec 21, 2015

i recently purchased a 100w Eheim Jager heater, the first day i calibrated it and set the temperature to 77 degrees. It was working fine for a day, then the second day i noticed that my temperature was 3 degrees higher than what iv'e set my heater to. so i re-calibrated the heater and now the heater wont turn off, i set it to 77 degrees and my tank temperature is now 83 degrees. i unplugged it before the temp gets to high. thanks

Tovar921 · Dec 21, 2015

any suggestions?

cmcoker · Dec 21, 2015

If you just bought it, I would contact the manufacturer for a replacement.
I never really messed with the calibration ring, I just set it and turned it down to where the heat needed, regardless of the marking.
I have added a finnex temperature controller on the latest build though, so there is backup to shut the heater off. I would recommend adding a controller whatever heater you end up using.

Tovar921 · Dec 21, 2015

Wow you lucky didn't even have to calibrate it. Thanks I will try to contact them.

jd371 · Dec 21, 2015

Yeah, you should have a controller on the heater. Most of the time the heaters fail it's stuck in the on position. Look at Ranco controllers, a bit pricey but good. I have this one too (http://www.amazon.com/gp/product/B00LWSPE78?psc=1&redirect=true&ref_=oh_aui_detailpage_o00_s00), it's cheaper than the Ranco, but only lets you set the range 1 degree up or down, but after a few moths in operation it has kept my tank steady at 77-78.

Tovar921 · Dec 21, 2015

Ok I will look into it thanks

ngvu1 · Dec 21, 2015

I always put the heaters behind some kind of temp controller that cuts the power to the heaters when water gets to a temp. Also, be a bit generous on picking the heater size. If you heater is a more than enough for you tank, they don't run all the time hence last longer.