Why does a GFCI (Ground Fault Circuit Interrupter) fail?

GFCI can fail for various reasons, such as wear and tear, moisture, corrosion, power surges, faulty wiring, or improper installation. Some of these causes can be prevented by regular inspection and maintenance, while others may require professional assistance. It is important to note that GFCI devices (ex. thermostat, breakers, outlets) should be tested regularly as these do wear out over time.

Why is my Programmable Timer's display faded / irregular?

The ambient room temperature is either too low or too high, affecting the thermostat's display.

CO-TI-PLS750 | Support

Support Questions

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What does the Ground Fault Circuit Interrupter (GFCI/GFEP) do that the Circuit Breaker doesn't?

A GFCI/GFEP (Ground Fault Circuit Interrupter / Ground Fault Equipment Protection) works differently than a circuit breaker by specifically detecting a small imbalance in electrical current between the hot and neutral wires, which indicates a potential ground fault (like a person touching a live wire), and instantly shutting off the power to prevent shock, while a circuit breaker only trips when there's a significant overload in current flow on the circuit, like a short circuit or too many appliances plugged in.

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Will a circuit breaker protect against a power surge?

No, a circuit breaker will NOT protect against a power surge; a circuit breakers primary function is to protect against excessive current flow (overload), while a surge protector is specifically designed to handle voltage spikes, which are what power surges are considered to be.

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How do I get into manual or automatic (programmed) modes on the Programmable Timer?

Press the main button for 3 seconds, select the mode menu, the hand icon indicates manual operation and the clock icon indicates automatic operation.

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How do I turn the Programmable Timer off?

Briefly press the main button to turn the switch on/off.

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I have a lock icon on my screen, how do I unlock the Programmable Timer?

Within 2 seconds, press the left button twice then press the right button twice.

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How can I tell if the Programmable Timer is trying to heat the floor?

The LED in lower right corner of the thermostat will illuminate.

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How do I erase a program from the Programmable Timer?

Press and hold the main button for the Menu option, select Prog. Press and release the main button until the days of the week are flashing. Use the right arrow to scroll through the days of the week until you get the word NONE. This means there will be no schedule for that specific program.

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How do I temporarily override the programmed setting of the Programmable Timer?

Change the 'state' by pressing the main button briefly. The load state will flash 'On' or 'Off' to indicate the change and will remain in effect until the next program cycle is invoked or the main button is pressed again.

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How many programs can be set on the Programmable Timer?

21 "on" programs and 21 "off" programs.

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Where do I find my latitude and longitude coordinates, to enter into the Programmable Timer for the sunrise/sunset feature?

By default the Programable Timer is set to +45 longitude and -75 latitude, this is fine for most North American cities. To find your cities coordinates, go to www.geonames.org, or simply use a GPS device.
Note: enter a negative number for a south latitude or a west longitude.

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