Question about Honeywell (HZ-341BL) Ceramic Heater

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Honeywell ceramic heater hz341bl

Heater will not power up. purchased it last year and worked fine, this season plugged in and unit is dead

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  • Anonymous Nov 26, 2007

    exact same problem

  • Anonymous Dec 01, 2007

    Same problem, so I tried taking it apart by taking out all the screws. Still can't take it apart. I'm gonna break it.

  • Matt6540 Dec 17, 2007

    I have the Honeywell HZ-364C ceramic heater and had it conk out on me after several years of good performance. The manual lists a back-up thermal circuit breaker as a safety feature. I spoke to Honeywell's customer service, and they said that this is basically a kill-switch, and there is no recovering from it.

    The good news is that you can probably get yours replaced via warranty if you've only had it for a while.

  • jamie2xs Feb 16, 2008

    I have the same exact problem... I purchased two of these heaters last winter, they worked fine for that winter, they spent the summer doing nothing and were stored indoors in closets, then this winter... wham-o neither one will even turn on!!!! Honeywell must have some serious quality control issues....

  • Anonymous Mar 17, 2008

    Last year worked great- stored it in a safe place in original packaging- plugged it in this year- nothing. The store wont even take it back- been 6 mths....will never buy this type of heater again.

  • Anonymous Nov 28, 2008

    I purchased two HZ-341BL heaters and both have stopped working. Completely 100% dead. The LED screen doesn't even come on when the device is plugged in.

  • scottmak Jan 21, 2009

    My wife gave me her work heater that had the same problem. Completely dead. After a ton of work, and alot of aggravation, I got the unit apart. After taking the control panel apart, locating a trouble, and testing, I found 2 zener diodes that were bad. They are 12v 1watt diodes. I replaced them both and still have a proboem. I am not getting the needed 5 volts on the control panel. I am working with a work collegue trying to figure it out. Now I need the schematic diagram for the unit. Is this all worth it?????? Probably not, but it seems like a cool heater. (no pun intended)

  • dmann1962 Jan 22, 2009

    Same problem. Worked yesterday, tried to turn it on today nothing happens, nothing lights up and power will not come on. I tried shaking it and inverting it as instructed and that didn't work. PLEASE HELP I'M FREEZING IN MY OFFICE!

  • Dunks001 Mar 30, 2009

    dead. stored sideways. Has anyone found out if honeywell will fix the issue?



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Like most heaters, this Honeywell ceramic heater has a tip switch designed to turn the heater off if it falls over. Unfortunately, all you need to do is bump the heater and the switch can open. Sometimes the switch will stick and the heater won't come on even when it is upright—sticking during storage could easily happen, particularly if not stored upright. When the switch is stuck on my heater, when I try to tturn it on the yellow and green pilot lamps flash once but nothing happens.

The solution is to rattle it, shake it, and invert it a few times to unsitck the switch. It always works for me. Something probably best done before you get frustrated to the point of shoving it through the floor. Also, if the heater was running when the switch sticks, be sure it cools down so the thermal switch has a chance to come back on.

Posted on Aug 26, 2008

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Posted on Dec 02, 2010

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I had a problem with my Honeywell HZ-315 ceramic heater. The light would go on the heater would work for a short time then turn off for a long period. I suspected some kind of overheating sensor similar to what exists in hairdryers. My solution was to disassemble the heater (you will need a T-10 size torx screwdriver and move the overheating sensor away from the top of the heater without removing the sensor. This simple step fixed the problem for me.

Posted on Dec 09, 2009

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To the guest who is having fun trying to take it apart (and, presumably, anyone else in the same boat), the key is where the power cord goes up into the heater under the bottom plate. There is an o-ring there that you have to take off (which is a giant pain in the ass without the proper tool..believe me) with a tool that looks like pliers, only they open when squeezed instead of close and come to points, if you can visualize that. From there, you also need an actual tamper-proof torx screwdriver (the socket kind that works on the upper screws won't work here), which I don't have, and am thus out of luck, for the moment. Most likely that whatever kill-switch is in there that tends to go off is the problem, but I feel the need to poke around anyway.

Posted on Jan 23, 2008

  • ryan barthel Jan 23, 2008

    Also...that'll be my bad on posting my comment as a 'solution' rather than a comment.


Heater stays on about a minute then it cuts off

Posted on Dec 23, 2007

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How can i fix my honey well heater?

Posted on Nov 21, 2008

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