Hotpoint Refrigerator Error Code CI: Ice Maker Sensor... | appliancefaults.com

Technical Background:

The CI error code indicates a fault with the ice maker's thermistor (temperature sensor). The main control unit (MCU) monitors the thermistor's resistance to determine the temperature of the ice maker. If the resistance is outside the expected range, the MCU triggers the CI error code. Voltage typically runs through the thermistor and back to the MCU for processing.

Symptoms:

The homeowner observes that the ice maker is not producing ice. The refrigerator's display shows error code CI.

Possible Causes:

Defective ice maker thermistor.
Wiring harness issue between the ice maker and the main control board.
Faulty main control board (MCU).
Ice blockage interfering with sensor readings.
Loose or corroded connections.

Solution:

1

Disconnect power to the refrigerator at the breaker panel. Verify 120V AC power is off with a multimeter.
2

Locate the ice maker assembly. It's typically in the freezer compartment, top left.
3

Inspect the wiring harness and connectors leading to the ice maker sensor. Check for loose connections or damage.
4

Disconnect the thermistor leads from the ice maker control board.
5

Use a multimeter to measure the thermistor's resistance. Refer to the service manual for the correct resistance range at a specific temperature (e.g., 5k ohms at 77°F).
6

If the thermistor's resistance is outside the specified range, replace the thermistor.
7

If the thermistor tests good, suspect a faulty main control board. Replacing the main control board requires careful consideration and is best left to a qualified technician.

Safety Warning:

Always disconnect power to the appliance before performing any repairs. Use Lock-Out/Tag-Out (LOTO) procedures to prevent accidental energizing of the circuit. High voltage is present inside the refrigerator.

Prevention:

Periodically inspect and clean the ice maker assembly to prevent ice buildup. Ensure proper freezer temperature (around 0°F). Check wiring connections for corrosion annually.

Expert Tip:

Some Hotpoint refrigerators have a diagnostic mode. Access it by pressing and holding the 'Freezer Temp' and 'Ice Maker On/Off' buttons simultaneously for 5 seconds. This will display more detailed error codes and sensor readings, potentially pinpointing the issue.

Frequently Asked Questions

•What is the correct resistance range for the ice maker thermistor at 32°F?

The resistance range for the ice maker thermistor at 32°F is typically around 10k ohms, but always refer to the specific service manual for your Hotpoint model.

•How do I access the main control board on this Hotpoint refrigerator model?

The main control board is usually located at the rear of the refrigerator, behind an access panel. Disconnect power before removing the panel. Be careful of sharp edges.

•Can I replace the ice maker thermistor myself, or do I need a professional?

If you are comfortable working with electrical components and have basic tools like a multimeter and 1/4-inch nut driver, you can likely replace the thermistor yourself. However, if you are unsure, it's best to call a qualified appliance technician.

Hotpoint Refrigerator Error Code CI: Ice Maker Sensor Troubleshooting

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip:

Frequently Asked Questions

•What is the correct resistance range for the ice maker thermistor at 32°F?

•How do I access the main control board on this Hotpoint refrigerator model?

•Can I replace the ice maker thermistor myself, or do I need a professional?

Related questions

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip: