Roper Washer Error Code NO tAP: Water Level Not Attained... | appliancefaults.com

Technical Background:

The MCU (Main Control Unit) sends a 120V AC signal to the water inlet valve to open and allow water to fill the tub. The pressure switch monitors the water level and sends a signal back to the MCU when the correct level is reached. If the MCU does not receive the signal within a specific timeframe, it triggers the 'NO tAP' error code.

Symptoms:

The washer starts, but the drum does not fill with water. An error code 'NO tAP' or similar appears on the display. The washer may time out and stop the cycle.

Possible Causes:

Insufficient water supply pressure (less than 20 PSI).
Clogged inlet screens on the water inlet valve.
Defective water inlet valve(s).
Faulty pressure switch.
Blocked or kinked fill hoses.
Malfunctioning main control board (MCU).

Solution:

1

Turn off the water supply to the washer.
2

Disconnect the fill hoses from the back of the washer and inspect the inlet screens for debris. Clean or replace as necessary.
3

Reconnect the fill hoses and check the water pressure at the hose connection using a pressure gauge. Minimum 20 PSI required.
4

Unplug the washer and access the water inlet valve. Use a multimeter to check for 120V AC when the washer is calling for water.
5

If voltage is present, the water inlet valve is likely defective and needs replacement.
6

If no voltage is present, check the pressure switch and wiring harness for continuity and proper connection.
7

If the pressure switch tests good, the main control board (MCU) may be faulty and require replacement.

Safety Warning:

Disconnect power to the appliance before performing any repairs. Lock Out/Tag Out (LOTO) procedures should be followed. Electrical components can carry dangerous voltage.

Prevention:

Regularly inspect and clean the inlet screens on the fill hoses. Ensure adequate water pressure to the washer. Avoid kinking or blocking the fill hoses.

Expert Tip:

Some Roper washers have a diagnostic mode. To access it, simultaneously press and hold the Start/Pause and Cycle Signal buttons for 3 seconds. This can display more detailed error codes and allow you to test individual components.

Frequently Asked Questions

•How do I test the water inlet valve with a multimeter?

Disconnect the power to the washer. Locate the water inlet valve and disconnect the wires. Set your multimeter to measure resistance (Ohms). Place the probes on the terminals of the valve. You should typically read between 500 and 1500 Ohms. An open circuit (infinite resistance) indicates a faulty valve.

•Where is the pressure switch located?

The pressure switch is usually located at the top of the washer cabinet or on the side of the outer tub. It has a small hose connected to it that runs to the bottom of the tub.

•What is the correct water pressure required for my Roper washer?

The minimum water pressure required for most Roper washers is 20 PSI. Optimal water pressure is between 30 and 80 PSI. If the pressure is too low, the washer may not fill properly, causing the 'NO tAP' error. If it's too high, it could damage the fill valve.

Roper Washer Error Code NO tAP: Water Level Not Attained Troubleshooting

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip:

Frequently Asked Questions

•How do I test the water inlet valve with a multimeter?

•Where is the pressure switch located?

•What is the correct water pressure required for my Roper washer?

Related questions

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip: