Ground Fault Protection (Gfci) - Honeywell CT230-GA Installation Manual

CT230-GA / CT230-GB

Ground fault protection (GFCI)

The CT230 linked unit, with built-in ground fault protection, is different from conventional thermostats. In
the event of a ground fault, the ground fault protection mechanism on the CT230 linked unit will trip and
quickly stop the flow of electricity to prevent serious injury.
Definition of a ground fault
Instead of following its normal safe path, electricity passes through a person's body to reach the ground.
For example, a defective floor heating mat can cause a ground fault.
Ground fault protection, does not protect against circuit overloads, short circuits, or electrical shocks. For
example, you can still receive an electrical shock if you touch bare wires while standing on a non-
conducting surface such as a wood floor.
Ground fault protection reset
When the ground fault protection mechanism trips, the TEST light is On (red). To reset the ground fault
protection, switch the CT230 linked unit to OFF and back to ON. The TEST light will turn off if the ground
fault protection is functioning properly.
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