Fifteen years ago, a contractor installed Easy Floor heating system under tiles in our lower level. There are four GFCI programmable thermostats wired to 240v service. About five months ago, one of the thermostats began to trip flashing a GFI fault. Two or three months later (and almost simultaneously), two other thermostats began to trip. They can be reset for short periods of time and even warm for up to 24 hours, and then trip again. The fourth is on a section of floor in an adjacent room and does not trip. There has been no construction or other disturbance of floor or wall areas.
- After fifteen years, is it reasonable to expect 3 of 4 GFCI thermostats to fail?
- Are thermostats specific to the installed floor mat, e.g. can I install a Honeywell thermostat to replace the old Easy Floor thermostats?
- What does FGS mean? I can find no definition or description of this thermostat designation.