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Very true, my Jager is 8 degrees off from the heaters scale and the tanks actual measured temp. "Dr. Know" <[EMAIL PROTECTED]> wrote in message news:[EMAIL PROTECTED] > On Fri, 28 Nov 2003 22:33:37 -0600, "No-Name" > <[EMAIL PROTECTED]> wrote: > > >I purchased a new Ebo Jager TS heater (250W, 105 gallon tank) - I've got the > >heater set to bring the tank to 79.5 degrees - I'm used to seeing heaters > >run (the red light stays on) until the tank is at the desired temp, then > >cycle on and off as necessary - this heater is cycling on and off even > >though the tank is not at 79.5 degrees - two different thermometers show the > >tank at 77 degrees - is the heater working as designed and it'll just take > >longer to get the tank to the desired temp, is does there appear to be a > >problem? Thanks! > > Due to the close proximity of the thermal switch to the heating > element, heaters will cycle on and off, even though the water is not > at the desired temperature - just more frequently than when they have > reached the desired temperature. > > Also, those temperature values printed on the heater are not accurate. > I have two different brands, Visi-therm and Hagen, and the closest one > is 3 degrees off. You have to set the heater by actual measured > values, not the heater's 'scale'. > > Greg >
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