If your Amana washing machine begins filling with water but immediately drains it away, the appliance will never complete a proper wash cycle. Clothes remain dirty, water is wasted, and the washer may appear to run continuously without making progress. While this issue can seem like a serious mechanical failure, it is often caused by an incorrectly installed drain hose or a faulty pressure switch.
Understanding why your Amana washer fills and drains at the same time can help you determine whether the problem is a simple installation mistake or a component that requires professional replacement.
Improper Drain Hose Installation
The most common cause of simultaneous filling and draining is an improperly positioned drain hose. Washing machines rely on the correct drain hose height to prevent water from flowing out of the tub unintentionally.
If the drain hose is inserted too far into the standpipe or installed below the manufacturer’s recommended height, gravity creates a siphoning effect. Instead of staying inside the tub, water continuously flows into the drain as the inlet valve keeps adding more.
Common drain hose installation mistakes include:
- Drain hose pushed too deeply into the standpipe
- Drain pipe installed too low
- Missing air gap between the hose and standpipe
- Drain hose kinked or improperly routed
- Incorrect installation after moving the washer
When siphoning occurs, the washer often appears to fill forever while never reaching the proper water level. The control board continues opening the water valve because it never detects that the tub is full.
Signs of a Drain Hose Siphoning Problem
Several symptoms point toward incorrect drain hose installation rather than a failed internal component.
You may notice:
- Water entering and leaving the washer simultaneously
- Very low water level during wash cycles
- Wash cycles taking much longer than usual
- Poor cleaning performance
- Continuous sound of running water
- Increased water bills due to excessive water usage
If these symptoms began immediately after installing, relocating, or servicing the machine, the drain hose should be inspected first.
Faulty Pressure Switch
Another common cause is a defective pressure switch.
The pressure switch monitors the water level inside the washing machine. It measures air pressure through a small hose connected to the bottom of the outer tub. As water rises, air pressure increases, signaling the control board when enough water has entered.
If the pressure switch fails or sends inaccurate readings, the washer may never recognize that it has reached the correct water level. The inlet valve continues filling while water drains away, creating an endless cycle.
Pressure switches can fail because of:
- Internal electrical wear
- Damaged sensing diaphragm
- Corroded terminals
- Moisture intrusion
- Manufacturing defects
- Age-related deterioration
A failed pressure switch often requires replacement rather than repair.
Blocked or Damaged Pressure Hose
The pressure switch depends on a narrow air hose that carries pressure from the tub.
If this hose becomes clogged with detergent residue, soap scum, lint, or debris, the pressure switch cannot accurately measure water levels.
The hose may also become:
- Cracked
- Pinched
- Disconnected
- Split
- Bent sharply
Any of these conditions can prevent the washer from detecting the proper water level.
Technicians inspect both the switch and its pressure hose before replacing any parts.
Water Inlet Valve Problems
Although less common, a malfunctioning water inlet valve can contribute to filling issues.
If the valve sticks open or does not close properly, water may continue entering the machine even after the correct level should have been reached.
Combined with another issue such as siphoning, this can make the problem appear much worse.
Electrical testing helps determine whether the valve is receiving constant power or has failed mechanically.
Electronic Control Board Issues
Modern Amana washers rely on an electronic control board to coordinate filling, draining, and water level monitoring.
If the control board misinterprets signals from the pressure switch or develops damaged circuits, it may activate both filling and draining functions incorrectly.
Control board failures are less common than drain hose or pressure switch problems, but they can occur after:
- Power surges
- Moisture damage
- Electrical shorts
- Component overheating
Because control boards are expensive, technicians usually eliminate simpler causes before recommending replacement.
Can You Fix It Yourself?
Homeowners can safely perform several basic inspections.
Check that the drain hose follows Amana’s installation guidelines and sits at the proper height. Ensure it is not inserted too deeply into the standpipe and that an air gap exists to prevent siphoning.
Also inspect the visible portion of the pressure hose for obvious damage or disconnection.
However, diagnosing electrical components such as pressure switches, inlet valves, and control boards requires specialized testing equipment and experience.
Attempting to replace electronic parts without confirming the actual cause may lead to unnecessary expenses.
Preventing Future Problems
Proper installation remains the best way to prevent continuous filling and draining.
Follow manufacturer recommendations whenever installing or relocating the washer. Avoid forcing the drain hose deeply into the standpipe, and periodically inspect hoses for damage or blockages.
Using the correct amount of HE detergent also helps reduce residue buildup inside pressure hoses and water level sensing components.
Scheduling maintenance when early symptoms appear can prevent more extensive repairs later.
Professional Diagnosis Saves Time and Money
Because several different components can produce similar symptoms, professional diagnosis is often the fastest solution.
An experienced technician can inspect the drain hose installation, test the pressure switch, examine the pressure hose, evaluate the inlet valve, and verify control board operation during one service visit.
Replacing parts without proper testing often results in unnecessary repairs while the original problem remains unresolved.
If your Amana washing machine fills and drains at the same time, don’t let the issue waste water or prevent your laundry from getting clean. Contact Poway Appliance Repair Service Center today. Our experienced technicians quickly diagnose drain hose installation problems, pressure switch failures, inlet valve issues, and electronic control faults to restore your washer to reliable operation.
Contact us
pwsdarc@gmail.com
