If you know that the GFCI is good, then the heater that you are plugging could have a "hot to frame" ground fault condition. This means that the ground prong on the plug is carrying some current as well as (or instead of) the neutral. A GFCI measures the current coming in from the hot and compares it to the current going out on the neutral. If they differ from each other, the GFCI will trip.
In your case the heater could probably have a "hot to frame" short - also known as a ground fault - and some of the current is going onto the ground wire. Either find the fault by taking the heater apart, or buy a new one and toss the faulty one before it causes a serious problem.
As always, if you are in doubt about what to do, the best advice anyone should give you is to call a licensed electrician to advise what work is needed.
Before you do any work yourself,
on electrical circuits, equipment or appliances,
always use a test meter to ensure the circuit is, in fact, de-energized.
IF YOU ARE NOT ALREADY SURE YOU CAN DO THIS
WORK SAFELY AND COMPETENTLY
REFER THIS WORK TO QUALIFIED PROFESSIONALS.
Try Ebay.com or one of several online antique outlets such as tias
Ellen Matheson is the model in the Premium Outlets ads. There are several other ads she has appeared in during the past few years.
The Upstairs Room was written by Johanna Reiss, and the story takes place during the Holocaust. The book has several themes such as courage, compassion, prejudice, and tolerance.
Several outlets have this machine for about $500.
There are several different options for hair replacement systems: * Hair plugging system. * Hair growth promoters. * Hair transfer systems. * Several others.
Someone can find information about Oxygen from several outlets. Some of those outlets include the internet, books, encyclopedias, journals, scientific magazine articles to name a few.
HD, or High Definition, video cameras can be purchased from several different outlets. Retail outlets such as Best Buy, Circuit City, and Radio Shack offer these items for sale.
Wallets sold under the brand name of Louis Vuitton can be purchased from several retail outlets in Houston, Texas. Retail outlets such as the Galleria sell these items to consumers.
Norelco makes several different kinds of electric razors that are cordless and rechargeable.
You can buy a motorized wheelchair at several locations. These locations include Walmart, Target, and Craigslist. You are not limited to these locations and you can search several outlets for a motorized wheelchair.