Hotpoint Dishwasher Spray Arms Not Spinning or Blocked:... | appliancefaults.com

Technical Background:

The dishwasher's main control unit (MCU) governs the wash cycle, activating the fill valve, wash pump, and drain pump in sequence. Voltage is supplied to these components through relays and solid-state switches. Proper water pressure and unobstructed spray arms are crucial for effective cleaning. The diverter motor, if present, directs water flow to the upper and lower spray arms alternately. Faulty components or blockages disrupt this process.

Symptoms:

The homeowner observes that the dishes are not getting clean, particularly on the upper rack. They may also notice that the spray arms are not rotating or that the water pressure seems low inside the dishwasher during the wash cycle.

Possible Causes:

Clogged spray arm nozzles.
Low water pressure.
Blocked filter or drain pump.
Faulty diverter motor (if applicable).
Defective wash pump motor.
Obstruction in the water supply line.

Solution:

1

Disconnect power to the dishwasher at the breaker panel. Use a voltage tester to confirm no voltage is present at the dishwasher's receptacle.
2

Remove the spray arms and clean each nozzle with a small wire or toothpick to remove any food particles or debris.
3

Inspect and clean the dishwasher filter, located at the bottom of the tub. Remove any visible debris and rinse thoroughly under running water.
4

Check the drain pump for obstructions. Remove the drain pump cover (usually requires a 1/4-inch nut driver) and clear any debris from the pump impeller.
5

Verify adequate water pressure to the dishwasher. A minimum of 20 PSI is generally required. Check the inlet valve screen for clogs.
6

If equipped, test the diverter motor (if applicable). Using a multimeter, check for continuity and proper voltage (typically 120V AC) when the dishwasher is in different cycles. Replace if faulty.
7

If all else fails, test the wash pump motor. Ensure the motor is receiving 120V AC during the wash cycle. If voltage is present and the motor is not running, the motor may be defective and require replacement.

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. Dishwashers operate on 120V AC, which can cause serious injury or death if not handled properly.

Prevention:

Regularly clean the dishwasher filter and spray arms (every 1-3 months). Run a dishwasher cleaner cycle monthly to prevent buildup of grease and food particles. Ensure proper water pressure to the dishwasher.

Expert Tip:

Some Hotpoint dishwashers have a service mode. To access it, press and hold the 'Start/Reset' button for 5 seconds, then simultaneously press the 'Heated Dry' and 'Normal Wash' buttons. This will initiate a diagnostic cycle, displaying error codes or allowing component testing.

Frequently Asked Questions

•How do I check the water pressure going to my dishwasher?

You can use a water pressure gauge connected to the water supply line (after shutting off the water, of course). Ideally, you want at least 20 PSI, but closer to 40 PSI is better.

•Where is the diverter motor located and how can I tell if it's working?

The diverter motor is usually located near the wash pump. You can often hear it clicking as it switches between the upper and lower spray arms. If you have access to a wiring diagram, you can use a multimeter to test for voltage at the motor terminals during different parts of the wash cycle.

•What type of dishwasher cleaner do you recommend?

Many dishwasher cleaners are available. Cascade and Finish are well-regarded brands. Follow the instructions on the cleaner's packaging. Typically, you'll pour the cleaner into the bottom of the dishwasher and run a normal or heavy-duty cycle.

Hotpoint Dishwasher Spray Arms Not Spinning or Blocked: Troubleshooting Guide

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip:

Frequently Asked Questions

•How do I check the water pressure going to my dishwasher?

•Where is the diverter motor located and how can I tell if it's working?

•What type of dishwasher cleaner do you recommend?

Related questions

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip: