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Power Module w/GFCI-30 mA 240V (CT230-240GB)

Power Module w/GFCI-30 mA 240V (CT230-240GB)

Part Number: CT230-240GBPast Model
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Support Questions

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When the ground fault protection mechanism trips, the TEST light is On (red). To reset the ground fault protection, switch the thermostat to Off and back to On. The TEST light will turn off.

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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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Relays can fail due to excessive current or voltage. When a relay is exposed to too much current, the contacts can burn out. High voltage can also damage the coil. Other reasons include mechanical wear and tear, dust or dirt buildup, and moisture. These factors can cause the relay to malfunction or stop working entirely. Regular maintenance and using the relay within its specified limits can help prevent failures.

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First check for voltage at the back of the thermostat. Make sure the power module power switches are ON, then test for 12VDC across the 12VDC and GROUND screws on the back of the thermostat (see the wiring diagram).

If no power reaches the thermostat, test for 12VDC across the 12VDC and GND output on the front of the power module base that supplies it (the faceplate must be installed). If there is no power there, check the breaker feeding the power modules: it must be a non-GFCI breaker, so replace a GFCI breaker with a non-GFCI one.

If power reaches the thermostat and it is still blank, replace the thermostat. If the power module has power but no 12VDC output to the thermostat, replace the power module.

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The Master Thermostat must operate on 12 VDC and is powered by one of the linked CT230 units.

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The manufacturer reversed the wiring pattern between the LOAD side and the LINE side on newly minted controllers, verify that your wiring matches the new wiring schematic stamped on the backplate of the new controller.

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No. The Honeywell CT230 must be controlled by a Honeywell Master Thermostat.

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Up to ten (10) CT230 linked units can be used in a given system.

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Three (3) wires; Ground, Drive, and 12 Volt DC.

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Two (2) wires; just the ground and the drive wires.

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Verify that the master thermostat is calling for heat. If it is and the light does not illuminate, this means that the test has failed. Cut power to the heating system at the main electrical panel, have a qualified electrician verify the installation and, if necessary, replace the CT230.

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No. The nJoin power module is not compatible with a Honeywell system.

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To reset the ground fault protection, switch the CT230 OFF and back ON, or cycle the circuit breaker off and on. The TEST light will turn off if the ground fault protection is functioning properly. If the TEST light comes back on, contact WarmlyYours at 1-800-875-5285 and speak to a technical support representative to help further troubleshoot your system.

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The wire distance between the master thermostat and each CT230 unit must not exceed 500 ft. (150 m). 20-AWG wires are recommended.

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The Master Thermostat.

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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.

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Specifications

Electrical

Amps 15 A
Connection 4 wires, double pole
Connection Method Hardwired
Ground Fault Protection (GFCI) Class A, 5 mA
Maximum Load (Resistive Only) 1800 W - 120 V, 15 A / 3600 W - 240 V, 15 A
Voltage 240 V
Watts 3600 W

Product Dimensions

Length 4″
Weight 1 lbs
Width 3″

Identifiers

SKU CT230-240GB

Warranty / Certifications

Warranty Limited 3-year warranty and lifetime technical support

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