The GFCI light continues to come back on after pressing the reset button.
This issue is related to a problem with the installation of your heating system to the thermostat. There is a failed current to ground occurring. Your resistance readings will need to be taken: core to core and both ground readings. We suggest having the electrician who installed the product perform these readings. Once obtaining the heating element model number and the readings have been performed, call Warmup with the results to confirm the diagnosis.