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Hi, we have a Honeywell ducted heating thermostat model t8602c2069. It has recently stopped working. This display panel is working so it's not the batteries, however when we turn it on heat does not come out of the vents. We recently had our safety switch turn our power off whist the heater was on. Since then we think it has stopped working. Our power has gone off several times again after this so we do not beleive the heater caused the safety switch to turn our power off. The only difference on the display since then that we have noticed is that there is a square symbol (not flashing) appearing on the display in the middle at the bottom of the screen. Can not work out what that means?

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We have exactly the same problem as dmlauder! (posted 6th September)
What does the square symbol mean?? We have to keep resetting the outdoor heating unit...it works for a few minutes then stops
cate

Posted on Sep 10, 2010

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