Hotpoint Dishwasher Error Code 8-1: Drain Pump Timeout... | appliancefaults.com

Technical Background:

The MCU (Microcontroller Unit) on the control board monitors the drain pump's current draw and operation. If the pump fails to drain the water within a predetermined time, the MCU assumes a fault and triggers the 8-1 error code. This timeout is typically between 2-4 minutes. The MCU sends 120V AC to the drain pump via a relay.

Symptoms:

Homeowner reports the dishwasher starts, but the water does not drain, and the 8-1 error code appears on the display. The dishwasher may stop mid-cycle.

Possible Causes:

Clogged drain hose
Obstructed drain pump
Faulty drain pump motor
Defective drain pump relay on the control board
Blocked air gap (if installed)
Wiring harness issue between the control board and drain pump

Solution:

1

Disconnect power to the dishwasher at the breaker panel.
2

Inspect the drain hose for kinks or clogs. Disconnect the hose and flush it with hot water.
3

Access the drain pump (usually behind the lower access panel). Check for obstructions like food particles or foreign objects. Remove any debris. A 1/4-inch nut driver is helpful.
4

Use a multimeter to test the drain pump motor for continuity. A reading of 10-30 ohms is typical. An open circuit indicates a faulty motor.
5

Verify 120V AC is reaching the drain pump connector during the drain cycle using a multimeter.
6

Check the wiring harness between the control board and the drain pump for damage or loose connections.
7

If voltage is present at the pump but the pump doesn't run, replace the drain pump assembly.

Safety Warning:

Always disconnect power to the dishwasher at the breaker panel before performing any repairs. Lock Out Tag Out (LOTO) procedures should be followed. 120V AC is present in the dishwasher, and electrocution is possible.

Prevention:

Regularly clean the dishwasher's filter and remove any food debris. Avoid placing excessively dirty dishes in the dishwasher. Run a dishwasher cleaner every month.

Expert Tip:

To enter service mode on some Hotpoint dishwashers, press and hold the 'Start/Reset' and 'Heated Dry' buttons simultaneously for 5 seconds. This can sometimes clear error codes or provide additional diagnostic information.

Frequently Asked Questions

•Where is the drain pump located in my Hotpoint dishwasher?

The drain pump is typically located at the bottom of the dishwasher behind the lower access panel. You will likely need a 1/4-inch nut driver to remove the panel.

•How do I know if my dishwasher's control board is faulty?

If you have checked all other possible causes and the drain pump is receiving the correct voltage (120V AC) from the control board during the drain cycle, but the pump still doesn't run, the control board may be faulty. However, it's best to confirm by visually inspecting the board for burnt components or damage. Control board diagnosis can be tricky, and you may need to consult with a qualified technician.

•What is the purpose of the air gap in my dishwasher's drain line?

The air gap prevents wastewater from siphoning back into the dishwasher from the drain line. If the air gap is clogged, it can prevent proper draining and trigger an error code. It is usually located near the sink.

Hotpoint Dishwasher Error Code 8-1: Drain Pump Timeout Troubleshooting

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip:

Frequently Asked Questions

•Where is the drain pump located in my Hotpoint dishwasher?

•How do I know if my dishwasher's control board is faulty?

•What is the purpose of the air gap in my dishwasher's drain line?

Related questions

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip: