Amana Washer Error Code HC: Hot and Cold Hoses Swapped -... | appliancefaults.com

Technical Background:

The MCU monitors water temperature via temperature sensors. When the water entering the machine does not match the expected temperature for the selected wash cycle, the MCU generates the HC error. The MCU expects a certain voltage range from the temperature sensor indicating hot or cold. Incorrect hose connections or valve failures disrupt this voltage path.

Symptoms:

The washer displays the error code HC. The water temperature is incorrect during the wash cycle (e.g., cold water in a hot wash). The washer may not fill properly or at all.

Possible Causes:

Hot and cold water hoses are reversed.
Inlet valve malfunction (hot or cold).
Water pressure is too low.
Clogged inlet valve screens.
Faulty temperature sensor.
Defective MCU (Main Control Unit).

Solution:

1

Unplug the washer from the outlet.
2

Verify hot and cold water hoses are connected to the correct inlets on the washer and at the supply. Ensure the hot water hose is connected to the hot water supply valve, typically on the left when facing the back of the washer.
3

Turn off the water supply to the washer.
4

Disconnect the water hoses and clean the inlet valve screens using a small brush. Use a 5/8-inch wrench to disconnect the hoses.
5

Turn the water supply back on slightly to flush out any debris.
6

Reconnect the hoses correctly. Ensure connections are tight to prevent leaks.
7

Plug the washer back in and run a test cycle to confirm the error is resolved.

Safety Warning:

Always disconnect the power supply (unplug the washer) before performing any repairs. Water and electricity can cause serious injury or death. Lock Out/Tag Out (LOTO) procedures should be followed. Be aware of potential 120V AC shock hazards when working with electrical components.

Prevention:

Periodically check the water hoses for kinks or damage. Clean the inlet valve screens every 6 months to prevent clogs. Avoid using excessive amounts of detergent, which can contribute to clogs.

Expert Tip:

Amana washers have a service mode. To enter it, with the washer off, press and hold the START/PAUSE button. While holding, press the POWER button. Continue holding START/PAUSE for 5 seconds. This may allow you to manually test the inlet valves and temperature sensors.

Frequently Asked Questions

•How do I test the inlet valves with a multimeter?

Disconnect the inlet valve wires. Set your multimeter to ohms. You should read approximately 1.3k ohms across the terminals of each valve coil. An open or shorted reading indicates a faulty valve.

•What is the correct water pressure for my Amana washer?

The recommended water pressure is between 20 and 100 PSI. Low water pressure can prevent the washer from filling properly and cause errors.

•Where is the temperature sensor located and how do I replace it?

The temperature sensor is typically located near the water inlet valve assembly. You'll need to remove the top panel of the washer to access it. Disconnect the sensor's wiring harness and remove any retaining clips or screws. Install the new sensor in the reverse order.

Amana Washer Error Code HC: Hot and Cold Hoses Swapped - Troubleshooting

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip:

Frequently Asked Questions

•How do I test the inlet valves with a multimeter?

•What is the correct water pressure for my Amana washer?

•Where is the temperature sensor located and how do I replace it?

Related questions

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip: