Vornado VH2 stopped working. on/off not functioning
My Vornado VH2 space heater stopped working. The on/off switch stays in one position, and the thing won't turn on even after unplugged then replugged in. It was one when I left, then came home from work and found this odd problem!
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These heaters have a thermostatically controlled safety switch. It works very similar to your household iron for pressing clothes. On your iron, when the unit heats up the metal in the switch expands and "clicks" open stopping the power from heating up the element any more, then when it cools down it "clicks" closed and power is applied to the heating element again. Now here is the problem... in your heater, the elements are over-heating and causing the safety switch to "click" open stopping ALL power from going to the unit. IF you sit there long enough, you will eventually hear the "click" of the switch cooling down and then you will be able to turn it back on for a short time - then it will do it all over again. =( Unfortunately, this seems to be a common problem with this series of heater. There really is no "good" repair option as the price you will pay for someone to "fix" it, would probably be better spent going towards a new heater.
A big problem with these heaters ans well as others is the motor driving the fan. The bearings get stiff from dirt and do not spin fast enough activating the over temp device of the heating element. Check the motor out by placing the unit in fan mode them pull the plug or turn off looking at the fan to see how many revolutions is makes with no power applied. It should rotate like five times or more indicating freeness. If it hals to a stop immediately after power is removed the motor bearings are tight.
If your handy you take apart and oil the shafts using 3inone motor lube. Clean the motor of dust and dirt drop a few drops on the shafts near the bearings then work it in by hand rotating the blades. Do this a few times reassemble then lerripp!!!
This is a pretty common issue with these heaters. The switch can easily be replaced by opening the unit and swapping out the switch assembly. One switch I have found that works well and is reatively inexpensive (under $4) is the one from Radio Shack (P# 275-0020) which is a 16A 125VAC illuminated round rocker switch. Unlike the OEM one that drops in, the RS one is a panel type which you will have to screw into place. The whole procedure shouldn't take you more than 15min.
THERE IS A LIMIT SWITCH THAT REGULATES HOW LONG THE HEAT STAYS ON SOUNDS LIKE THIS LIMIT SWITCH WHENT BAD MOST ITEMS LIKE THIS HAVE A FACTORY WARRANTY THAT COVERS THIS ISSUE MY RECCOMENDATION IS TO TAKE IT BACK TO WARE YOU BOUGHT IT OR IF YOU LIKE TAKE IT APART WHILE IT IS UNPLUGGED AND LOOK FOR A LITTLE DEVICE THAT BREAKS ONE WIRE TO YOUR HEATER ELEMENT AND TRY TO MATCH IT UP AND REPLACE IT.