Question about Honeywell HZ-338 Ceramic Compact Heater

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Honeywell HZ-338 thermostat problem

It is reading the temperature inside the heater and not the temperature of the room.

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  • Contributor
  • 46 Answers

See if there is a little brass-looking bulb on a wire (sensing bulb) inside that can be moved away from the heat. My other thought would be maybe there is supposed to be some insulation between the control unit and the heating element that was inadvertently discarded?

Posted on Nov 27, 2013

  • Robert Rose
    Robert Rose Nov 29, 2013

    Found the problem. A ceiling fan was moving more air in the reverse direction than it's little could handle. Once it was removed from the influence of the ceiling fan, it worked correctly.

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6 Suggested Answers

6ya6ya
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Posted on Jan 02, 2017

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  • 1 Answer

SOURCE: changing a room thermostat a potterton to honeywell t6360

I think I've done it - but don't take this as absolute truth.
For the Honeywell T6360B the original Potterton wiring should be rewired as follows:
Brown [Live] goes to terminal 1; Blue [neutral] goes to Terminal 2 and the yellow/green [which is not an earth but a switched live - i.e. gives live to the heating system when the thermostat clicks in] goes to terminal 3.
Obviously all done with the power isolated and when it was switched back on we had heating again :o)
It's been on over two hours now and all seems fine.

Posted on Feb 16, 2008

  • 1 Answer

SOURCE: Honeywell HZ-709 Oil Filled Radiator

Problem: firs let's identify the problem, there is a sensor on the inside panel, made originally for safety if you tipped the heater off, it kill the power causing it to turn off...after a year of so that sensor get a little rusty/dirty causing it not to work correctly...

let's find out how to fix that annoying turn off..

tool needed, a phillip screw driver.. electrical tape or soldering unit..

fixing it: take out the top and bottom screws, to open the panel. after you open the panel you'll see a metal bar screwed to the front controller...take all 6 screws out...the front panel comes off....then there is about 4 screws holding an inner box, open that up..
inside there, you;ll see lots of wires...look for 2 small blue wire running together to a black sensor that make noise everytime you move it....

disabling the sensor
------------------------------
2 ways you can do this..

-you can cut the wire off using a scissor, and connect the blue wires together, use the tape to tape them.
or

- you can solder them together on the back of sensor panel...


there you go problem solved...

Posted on Mar 25, 2008

Roger NB Jr
  • 1 Answer

SOURCE: Instruction Manual for HZ-705

HZ 709 This model# is the closet we'll are gonna get unless I can find my manual and get it scanned. Scroll down to page 4.These instructions will give you a basic idea how this heater works. Good Luck :-) http://www.honeywellcentral.com/ssi/pdf/honeywell-commercial/oil-filled-heaters.pdf

Posted on Nov 22, 2008

  • 116 Answers

SOURCE: how to remove thermostat cover to replace

the cover pulls off if it has a green screen then most likely takes batteries if does not light up then no batteries with a small piece of insulated wire jump from green to red if indoor fan does not come on then transformer bad

Posted on May 15, 2009

heatman101
  • 43501 Answers

SOURCE: Honeywell RTH2310 thermostat temp variance

Hi,
Yes you can change that by change the number of cycles per hour that your t-stat looks from for youe furnace. Lower the cycles per hour number and it will increase the range.

You can see how to do it here

http://dl.owneriq.net/3/39359643-dfda-451d-bb81-828eecddd9fc.pdf

I hope that this will help you to solve your problem!

Thanks for using Fixya!!

Heatman101

Posted on Dec 12, 2009

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Some text from the manual:

SET UP
• The Surround Heat™ Heater is designed to
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• To select the desired heating mode, slide the Direction Control switch, located
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