Whirlpool WRX735SDHZ Refrigerator: Ice Maker Jammed with... | appliancefaults.com

Technical Background:

The ice maker in the Whirlpool WRX735SDHZ is controlled by the main control unit (MCU) which receives input from the ice level sensor and controls the water inlet valve and the ice mold heater. The ice maker cycle is initiated by the MCU based on temperature and ice level. Voltage paths include 120V AC to the water inlet valve and the heater, and 5V DC for the ice level sensor.

Symptoms:

The homeowner reports that the ice maker is jammed with ice and producing double-sized ice cubes. Ice production may have stopped completely, or the ice bucket is overflowing with oversized cubes.

Possible Causes:

Water inlet valve overfilling
Ice mold heater malfunction
Ice level sensor failure
Faulty ice maker module
Low freezer temperature
Ice cube size adjustment incorrect

Solution:

1

Disconnect power to the refrigerator at the breaker panel. Verify 0V AC at the refrigerator outlet with a multimeter.
2

Remove the ice maker cover (usually held by clips or screws) using a 1/4-inch nut driver.
3

Inspect the ice mold for ice blockages or excessive ice buildup. Manually remove any large ice chunks.
4

Check the water inlet valve for proper operation. Disconnect the water line (usually a 1/4-inch compression fitting). Initiate a test cycle and observe if the valve is dispensing water excessively. If so, replace the valve.
5

Test the ice maker heater for continuity using a multimeter. It should show a resistance value (typically between 50-150 ohms). If open, replace the heater.
6

If the heater is good, replace the ice maker module assembly.
7

Reconnect power and observe ice maker operation.

Safety Warning:

Always disconnect power to the refrigerator before performing any repairs. Lock Out/Tag Out (LOTO) procedures must be followed. High voltage (120V AC) is present in the appliance. Exercise caution when working with electrical components.

Prevention:

Replace the refrigerator's water filter every 6 months. Periodically empty the ice bin and clean the ice maker components with a damp cloth. Adjust the freezer temperature to the recommended setting (around 0°F).

Expert Tip:

Some Whirlpool refrigerators have a service mode that can be accessed by pressing and holding certain buttons (check the service manual for the exact sequence for the WRX735SDHZ). This mode allows you to manually initiate an ice maker cycle for testing purposes.

Frequently Asked Questions

•What is the correct resistance value for the ice maker heater?

The correct resistance value for the ice maker heater on the Whirlpool WRX735SDHZ should be between 50 and 150 ohms. If the resistance is significantly higher or reads open (OL) on your multimeter, the heater is faulty and needs to be replaced.

•How do I access the diagnostic mode on this refrigerator?

Accessing the diagnostic mode varies between models. Refer to the service manual for the Whirlpool WRX735SDHZ. It typically involves pressing a specific sequence of buttons on the control panel within a short timeframe. Look for instructions on initiating a forced ice harvest or water fill test.

•What is the proper freezer temperature setting for optimal ice production?

The recommended freezer temperature setting for optimal ice production in the Whirlpool WRX735SDHZ is around 0°F (-18°C). Colder temperatures can cause faster ice production, but excessively cold temperatures can sometimes lead to ice maker problems or damage.

Whirlpool WRX735SDHZ Refrigerator: Ice Maker Jammed with Double Cubes - How to Fix

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip:

Frequently Asked Questions

•What is the correct resistance value for the ice maker heater?

•How do I access the diagnostic mode on this refrigerator?

•What is the proper freezer temperature setting for optimal ice production?

Related questions

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip: