Question about Honeywell (HZ-341BL) Ceramic Heater

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HZ-725 honeywell cooltouch heater..Lights on but no heat

I have the HZ-725 Honeywell heater and ive used it for only one month and it stopped giving out heat. This got me really mad cause its really cold in my house and our last heater died out. Can anyone please help me out here? Oh yeah and how do you unscrew the heater so i can look into it. Ive tried a lot of screwdrivers and none of them worked.

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  • Anonymous Jan 10, 2009

    I have this same problem, but with TWO of them. This product is terrible.

  • dmhode Jan 26, 2009

    I've had three do this. One I was able to return to the store. It seems to be a fault in the auto-shutoff. It comes on and then switches off again after about two minutes. I've tried it at several different temps. Doesn't make any difference.

  • vickster17 Feb 11, 2009

    Ditto here, but we only bought one, and it only lasted a couple days. Thinking about taking it apart...Or go buy another one somewhere, return this one!

  • Dunks001 Mar 30, 2009

    same problem. one year old. what are my service options?



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The screws are "Tamper-Proof Torx" head, it takes a special T15H tool bit to remove the screws. I just disassembled one of these non-working units and the problem with this unit is a open diode on the heater element board. Not sure the purpose of the diode, but no voltage is going through it. I doubt if parts are available as I see no link for parts on the website. This unit has been quite hot inside as the plastic mounting peg for the heater element board is melted near the diode area.

Posted on Nov 18, 2009


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