Question about Heating & Cooling

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Lasko heater model 5620

When the unit is plugged in the caution light on the control panel comes on and it does nothing when the power button is pressed.

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  • Anonymous Feb 22, 2008

    After plug in yellow light lights up, but nothing works.

  • Rayven Feb 22, 2008

    caution light comes on when heater is plugged up. What is the problem? Nothing is blocking it.

  • firebug1447 Feb 24, 2008

    I am having the same problem. I turned it on this morning and when I came home after lunch, there was a yellowish/ orange light on. None of the buttons work. I tried unplugging the unit for a couple of minutes, but to so avail. How do I fix this problem?

  • jaybird32 Mar 19, 2008

    same problem turn heater on few seconds later yellow light comes on and heater wont do anything

  • Anonymous Apr 30, 2008

    the heater caution light stays no it will not work . i unpugged it for a day

    plugged it back in nothing nothing works

  • Alucard185 Oct 29, 2008

    i have the problem with the caution light as well. took the whole thing apart and let it sit overnight, no help at all. and you people who post your Problem in the SOLUTION section, with the exception of the last guy, are idiots.

  • gkfriers Nov 09, 2008

    Same problem. I'm calling the company on Monday.  I'll post the information they give me. 

  • Anonymous Nov 11, 2008

    lights on but no heat no digital display

  • Anonymous Dec 10, 2008

    The caution light won't turn off ! I can't get any of the buttons to turn on. I unplugged it for a few days, that didn't help either. I will try to called Lasko for help. Thanks

  • hotgirl12320
    hotgirl12320 Feb 09, 2012

    IVE NEVER HAD A PROBLEM WITH MINE HAD MINE FOR 6 YEARS NEVER A PROBLEM NOPE NOPE MY HEATER CAME OUT AWESOME

  • Clark with Big Toast Dec 11, 2012

    MILKHOUSE HEATER "CAUTION LIGHT" SOLUTION: Unplug the heater. Open it up and clean it out. I mean, buy a can of non-chlorinated brake cleaner and squirt all of the contacts good. Below the fan there is a sensor mounted on the heater element box on the bottom. That goes bad and causes it to trip. While you are there, squirt the motor bushings good with the brake cleaner and dab a drop of synthetic motor oil (just a drop) on EACH of the two motor bushings. Personally, I rewired this and bypassed all of the safety features. You can bypass that sensor without soldering or cutting any wires. All you have to do is unscrew the wires from the holder and then unscrew the tiny nuts and tiny bolts. Then bolt the together at one end (note the position) and put it back in the holder and tighten the screw to hold it in. This method fixes the issue completely as it removes the sensor from the equation. In fact, I just did that on my third milkhouse heater and it has been running solid for the last 15 minutes. Use your modified heater with caution!

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Underneath the heater element are two thermostats that are run in series with each other. Inside the wire that connects them is a thermal fuse that opened up. Replacing the fuse corrected the problem.

Posted on Nov 10, 2008

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The Lasko heater model 5620 is a piece of junk. throw it in the garbage.

Posted on Dec 23, 2008

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I have the same problem, i bought this from lowes about 4 months ago and the orange light came on a few days ago so i unplugged it for a day and when i plug it back up, same thing, I cant get it to work. Any suggestions, please post

Posted on Mar 20, 2008

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I'm having the same problem. The caution light came on today and has not been turned off. I need this heater!

Posted on Feb 24, 2008

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  • Master
  • 506 Answers

One of the two thermostats died in mine. They are NC170 deg C thermostats. (NC = normally closed) Since they are NC they read shorted at room temp, just use an Ohm meter or check for continuity and you are all set.

Posted on Dec 13, 2009

  • RedWireNut Dec 13, 2010

    Allied Electronics has these thermostats. Allied part # 557-0020 or mfr (Selco?)part # OR-350-QC. Price in 2009 catalog has gone up (doesn't everything?)

  • RedWireNut Dec 31, 2010

    The inline TCO thermal fuse located in the line between the two snap disc thermostats is a NTE #8181 and can be obtained from Newark Electronics.
    Newark SKU #06M7506 http://www.newark.com/jsp/content/printC...

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How do i change the temperature setting on a lasko 5628 without a remote

Posted on Mar 11, 2012

Got this info off their website:
SAFETY FEATURES
1. A thermal overload protector is built in to prevent overheating.
2. When an overheat temperature is reached, the Heater will be automatically
shut off and the CAUTION light will be lit. After the
CAUTION light goes off, you may resume normal operation.
3. If the Heater senses that the room temperature is too high, the
Heater will shut off, the display will begin to flash and the green
heating light will also flash. To reset the unit, unplug the Heater
and wait 10 minutes for the Heater to cool down.
4. After the Heater has cooled down, follow the operation instructions
described in this manual.
MODEL 5620
TROUBLE TIPS
If your heater shuts off unexpectedly or fails to operate, one of
the above-mentioned safety features may have been activated
to prevent overheating.
1. Be sure the power cord is plugged into a working electrical outlet.
2. Check your Thermostat setting. The Heater may be off because
it has reached the desired temperature setting.
If you have a problem that can not be resolve by the steps listed
above, contact Technical Assistance at 800-233-0268, Monday
through Friday, between the hours of 8am and 5pm EST.

Posted on Aug 26, 2008

  • mystuff2 Jan 05, 2011

    Dahhh!
    I already read the (Useless) manual!

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THE reason these basebord heaters used to come without a thermostat is because they are (OR WERE)set up to add on additional heaters comming right on down the wall. At the last one you could tie in and get a correct rated thermostat installed in the center of the series.
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