When thermostat is turned on or lowered in temp, invariably there is a striking or sparking noise associated with the thermostat until the temp is obtained. It's not continuous ... also there are "sparks" associated with this as well. Kinda scary. Any ideas what is happening? Will a replacement of the thermostat alone resolve the problem? We've moved into this home recently and not familiar with its history.
2006-10-24 08:49:49 · 5 answers · asked by frisky 2 in Home & Garden ➔ Maintenance & Repairs
The noise sounds like the cracking of a whip. Could it be caused from static electricity?
2006-10-24 09:59:51 · update #1
Thermostats are of different types. Low voltage don't spark. Line voltage (120V) may, as they make and break frequently around the desired temp. If it is loud, the contacts may be worn or burnt.
Replace it.
2006-10-24 09:20:38 · answer #1 · answered by Anonymous · 0⤊ 0⤋
It is true there is a sparking noise associated with this type thermostat as we have the same type. If you take off the cover, you will observe mercury in a tube that moves one way or another when the heating/cooling is working. You should not smell anything or see a really big spark however, if so you may need to replace the thermostat, which is a good idea these days anyway because there are many much more efficient ones one the market that last longer. In the meantime, it is always a good idea to remove the dust from the tube with the mercury and any other dust inside. Make sure you turn the furnace/air off first. It has been pr oven that a dusty thermostat affects energy waste.
2006-10-24 09:24:05 · answer #2 · answered by kriend 7 · 0⤊ 0⤋
If it is an old honeywell of T-87 round thermostat. The mercury under the cover causes the arch. This is normal. You really have good hearing if you can hear that. The bymetal coil unwinds when it reaches temp and moves the vessle of mercury disconnecting the 24volts, call for heat, and stopping gas flow.
2006-10-24 09:06:58 · answer #3 · answered by Lamont 2 · 0⤊ 0⤋
nooo I have had the old round honeywell types... still have one in fact, and Ive NEVER heard a spark...should only close the circuit to connect to a low wattage relay which should NOT make it spark...
2006-10-24 10:30:40 · answer #4 · answered by Anonymous · 0⤊ 0⤋
low voltage wont make a noise like that.
you probably have electric heat
get an electrician since none of your breakers are marked :)
2006-10-24 11:49:30 · answer #5 · answered by Specialist Ed :Þ 3 · 0⤊ 0⤋