Question about Maytag Neptune MAH5500B Front Load Washer

1 Answer

Pressure Switch or Air dome?

Our front load Neptune washer continues to fill the tub without stopping which has caused the door to bow open at the bottom. We have located the water level valve and it looks fine and shuts off when the machine drains. How can we tell if our pressure switch is the issue and or the air dome? Is the air dome the rubber bubble connecting to the pressure switch?

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  • 3 more comments 
  • Phogdog Dec 06, 2007

    Yes it does stop when you hit start stop and when you unplug. If it is the air dome, how do I fix that?

  • Phogdog Dec 06, 2007

    We checked the pressure switch spout and dome, very little debris. All appear to be fine. It is still filling and filling with water. Any ideas?

  • Phogdog Dec 06, 2007

    I am going to order a new pressure switch. It has to be that, we have checked everything else. The first click to lock the door happens, but the second click never occurs ( water level achieved ) . Thanks for helping. I will be back to find out how to install.

  • Phogdog Dec 11, 2007

    Part is installed and it appears to be working well. Although I still think it is filling with a huge amount of water. Thanks for helping.

  • Phogdog Dec 11, 2007

    The part is installed and all seems to be working well, although it still sounds like it is using a huge amount of water.

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  • Master
  • 447 Answers

Does it stop filling when you hit Start/pause or do you have to shut off water supply? The air dome is the black rubber piece that is clamped to the pump housing. Usually i find that clogged not letting the pressure sw operate proper. I belive the switch has 4 wires. It has 2 contacts, one closes with a small amount of water visible in tub, hi contacts close with water much higher - even filling bottom of boot.

Posted on Dec 06, 2007

  • 1 more comment 
  • joey  shearer
    joey shearer Dec 06, 2007

    You remove from pump and check pump and rubber dome for any obstuctions ie gunk, coins, lint etc.. If it clean and the little green spout from switch hole is clear than its ok.

  • joey  shearer
    joey shearer Dec 06, 2007

    There should be four wires to the switch. With switch assembled in place start filling machine as i said before the switch will close the first set of low fill contacts( two of the wires will be continuitous) then a 2nd level Hi set (the other two wires will be continuitous) check and see if switch is working ok.

  • joey  shearer
    joey shearer Dec 06, 2007

    Its worth a shot. Let me know what you find.

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2) There could be a problem with the water level switch. Call in a professional.

3) There is a pressure switch hose that is attached to an air dome. This switch tells the washer that there is water in the tub and allows the agitator to start.

- Remove the control panel and you will notice a small hose. See if it popped off of the air dome. If it did, secure it with a zip tie.

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Water Does Not Shut Off and Overflows: The water level in a washer is controlled by the Pressure Switch. The switch is usually cylindrical in shape and has an electrical connection and an air hose attached. In many cases, the small air hose comes loose from the Pressure Switch fitting and/or falls off. This air hose is required to detect the air pressure from the wash tub as tub fills. With no air pressure, the switch will not function and the result will be a wash tub that fills continuously to the point of overflowing. The same would be true, if the air hose has any cracks, splits or holes in it.

Water Leaking While Filling: The other end of this hose runs to the air dome fitting on the side of the wash tub. If the lower end of the hose comes off, the water will begin to spill onto the floor under the washer, but the tub will not fill.

What to Look For: Check for the obvious. Make sure the air hose is still attached to the pressure switch and air dome. Then, inspect the entire length of the hose, paying particular attention to areas where chaffing may occur and at the points where the hose connects to the pressure switch and air dome. Vibrations from the washer can cause some wear if the hose is rubbing against anything, and the ends of the hose can stretch over time and not seal properly.

On most top loaders the Pressure Switch is located inside the operator console behind the knob that controls the water level. This knob is commonly referred to as the "Load Level", "Load Size" or "Water Level". On front loader washers the pressure switch location is usually located in the back of the washer behind the wash tub, or along the interior cabinet wall adjacent to the wash tub.

How to Correct: If the hose has slipped off, cut about ½" off the end of the hose and reattach to the pressure switch and/or air dome fitting. Take a small zip tie and place it around the hose at the point where it connects to the fitting. DO NOT over tighten as this can damage the air hose fitting. Just make the zip tie snug enough to keep the air hose from sliding off. If the hose has any cracks or holes, you can attempt to seal them by using electrical tape. Replacement tubing can be purchased at any hardware store.

NOTE: This is not an all inclusive fix, as the Pressure Switch can fail in some cases and cause similar symptoms. This is merely a preliminary check for a common occurrence that I have discovered. It can give symptoms of a major problem, resulting in a call for a repairman, only to turn out to be a simple fix that any Do-It-Yourselfer should be able to check and correct themselves. I hope this information is found to be helpful and saves many of you a future service call.

Thanks for using FixYa - a 4 THUMBS rating is appreciated for answering your FREE question.

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Water Does Not Shut Off and Overflows: The water level in a washer is controlled by the Pressure Switch. The switch is usually cylindrical in shape and has an electrical connection and an air hose attached. In many cases, the small air hose comes loose from the Pressure Switch fitting and/or falls off. This air hose is required to detect the air pressure from the wash tub as tub fills. With no air pressure, the switch will not function and the result will be a wash tub that fills continuously to the point of overflowing. The same would be true, if the air hose has any cracks, splits or holes in it.

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What to Look For: Check for the obvious. Make sure the air hose is still attached to the pressure switch and air dome. Then, inspect the entire length of the hose, paying particular attention to areas where chaffing may occur and at the points where the hose connects to the pressure switch and air dome. Vibrations from the washer can cause some wear if the hose is rubbing against anything, and the ends of the hose can stretch over time and not seal properly.

On most top loaders the Pressure Switch is located inside the operator console behind the knob that controls the water level. This knob is commonly referred to as the "Load Level", "Load Size" or "Water Level". On front loader washers the pressure switch location is usually located in the back of the washer behind the wash tub, or along the interior cabinet wall adjacent to the wash tub.

How to Correct: If the hose has slipped off, cut about ½" off the end of the hose and reattach to the pressure switch and/or air dome fitting. Take a small zip tie and place it around the hose at the point where it connects to the fitting. DO NOT over tighten as this can damage the air hose fitting. Just make the zip tie snug enough to keep the air hose from sliding off. If the hose has any cracks or holes, you can attempt to seal them by using electrical tape. Replacement tubing can be purchased at any hardware store.

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Water Does Not Shut Off and Overflows: The water level in a washer is controlled by the Pressure Switch. The switch is usually cylindrical in shape and has an electrical connection and an air hose attached. In many cases, the small air hose comes loose from the Pressure Switch fitting and/or falls off. This air hose is required to detect the air pressure from the wash tub as tub fills. With no air pressure, the switch will not function and the result will be a wash tub that fills continuously to the point of overflowing. The same would be true, if the air hose has any cracks, splits or holes in it.

Water Leaking While Filling: The other end of this hose runs to the air dome fitting on the side of the wash tub. If the lower end of the hose comes off, the water will begin to spill onto the floor under the washer, but the tub will not fill.

What to Look For: Check for the obvious. Make sure the air hose is still attached to the pressure switch and air dome. Then, inspect the entire length of the hose, paying particular attention to areas where chaffing may occur and at the points where the hose connects to the pressure switch and air dome. Vibrations from the washer can cause some wear if the hose is rubbing against anything, and the ends of the hose can stretch over time and not seal properly.

On most top loaders the Pressure Switch is located inside the operator console behind the knob that controls the water level. This knob is commonly referred to as the “Load Level”, “Load Size” or “Water Level”. On front loader washers the pressure switch location is usually located in the back of the washer behind the wash tub, or along the interior cabinet wall adjacent to the wash tub.

How to Correct: If the hose has slipped off, cut about ½” off the end of the hose and reattach to the pressure switch and/or air dome fitting. Take a small zip tie and place it around the hose at the point where it connects to the fitting. DO NOT over tighten as this can damage the air hose fitting. Just make the zip tie snug enough to keep the air hose from sliding off. If the hose has any cracks or holes, you can attempt to seal them by using electrical tape. Replacement tubing can be purchased at any hardware store.

NOTE: This is not an all inclusive fix, as the Pressure Switch can fail in some cases and cause similar symptoms. This is merely a preliminary check for a common occurrence that I have discovered. It can give symptoms of a major problem, resulting in a call for a repairman, only to turn out to be a simple fix that any Do-It-Yourselfer should be able to check and correct themselves. I hope this information is found to be helpful and saves many of you a future service call.

Thanks for using FixYa - a 4 THUMBS rating is appreciated for answering your FREE question.

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Water Does Not Shut Off and Overflows: The water level in a washer is controlled by the Pressure Switch. The switch is usually cylindrical in shape and has an electrical connection and an air hose attached. In many cases, the small air hose comes loose from the Pressure Switch fitting and/or falls off. This air hose is required to detect the air pressure from the wash tub as tub fills. With no air pressure, the switch will not function and the result will be a wash tub that fills continuously to the point of overflowing. The same would be true, if the air hose has any cracks, splits or holes in it.

Water Leaking While Filling: The other end of this hose runs to the air dome fitting on the side of the wash tub. If the lower end of the hose comes off, the water will begin to spill onto the floor under the washer, but the tub will not fill.

What to Look For: Check for the obvious. Make sure the air hose is still attached to the pressure switch and air dome. Then, inspect the entire length of the hose, paying particular attention to areas where chaffing may occur and at the points where the hose connects to the pressure switch and air dome. Vibrations from the washer can cause some wear if the hose is rubbing against anything, and the ends of the hose can stretch over time and not seal properly.

On most top loaders the Pressure Switch is located inside the operator console behind the knob that controls the water level. This knob is commonly referred to as the "Load Level", "Load Size" or "Water Level". On front loader washers the pressure switch location is usually located in the back of the washer behind the wash tub, or along the interior cabinet wall adjacent to the wash tub.

How to Correct: If the hose has slipped off, cut about ½" off the end of the hose and reattach to the pressure switch and/or air dome fitting. Take a small zip tie and place it around the hose at the point where it connects to the fitting. DO NOT over tighten as this can damage the air hose fitting. Just make the zip tie snug enough to keep the air hose from sliding off. If the hose has any cracks or holes, you can attempt to seal them by using electrical tape. Replacement tubing can be purchased at any hardware store.

NOTE: This is not an all inclusive fix, as the Pressure Switch can fail in some cases and cause similar symptoms. This is merely a preliminary check for a common occurrence that I have discovered. It can give symptoms of a major problem, resulting in a call for a repairman, only to turn out to be a simple fix that any Do-It-Yourselfer should be able to check and correct themselves. I hope this information is found to be helpful and saves many of you a future service call.

Thanks for using FixYa - a 4 THUMBS rating is appreciated for answering your FREE question.

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Water Does Not Shut Off and Overflows: The water level in a washer is controlled by the Pressure Switch. The switch is usually cylindrical in shape and has an electrical connection and an air hose attached. In many cases, the small air hose comes loose from the Pressure Switch fitting and/or falls off. This air hose is required to detect the air pressure from the wash tub as tub fills. With no air pressure, the switch will not function and the result will be a wash tub that fills continuously to the point of overflowing. The same would be true, if the air hose has any cracks, splits or holes in it.

Water Leaking While Filling: The other end of this hose runs to the air dome fitting on the side of the wash tub. If the lower end of the hose comes off, the water will begin to spill onto the floor under the washer, but the tub will not fill.

What to Look For: Check for the obvious. Make sure the air hose is still attached to the pressure switch and air dome. Then, inspect the entire length of the hose, paying particular attention to areas where chaffing may occur and at the points where the hose connects to the pressure switch and air dome. Vibrations from the washer can cause some wear if the hose is rubbing against anything, and the ends of the hose can stretch over time and not seal properly.

On most top loaders the Pressure Switch is located inside the operator console behind the knob that controls the water level. This knob is commonly referred to as the “Load Level”, “Load Size” or “Water Level”. On front loader washers the pressure switch location is usually located in the back of the washer behind the wash tub, or along the interior cabinet wall adjacent to the wash tub.

How to Correct: If the hose has slipped off, cut about ½” off the end of the hose and reattach to the pressure switch and/or air dome fitting. Take a small zip tie and place it around the hose at the point where it connects to the fitting. DO NOT over tighten as this can damage the air hose fitting. Just make the zip tie snug enough to keep the air hose from sliding off. If the hose has any cracks or holes, you can attempt to seal them by using electrical tape. Replacement tubing can be purchased at any hardware store.

NOTE: This is not an all inclusive fix, as the Pressure Switch can fail in some cases and cause similar symptoms. This is merely a preliminary check for a common occurrence that I have discovered. It can give symptoms of a major problem, resulting in a call for a repairman, only to turn out to be a simple fix that any Do-It-Yourselfer should be able to check and correct themselves. I hope this information is found to be helpful and saves many of you a future service call.

Thanks for using FixYa - a 4 THUMBS rating is appreciated for answering your FREE question.

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This advice is for a washer that fills and will not shut off, resulting in an overflow. Or, water is leaking from the washer while filling. The symptoms can apply to either a TOP LOADER or FRONT LOADER washer. This may be able to save you from an expensive service call by making these simple visual checks.

Water Does Not Shut Off and Overflows: The water level in a washer is controlled by the Pressure Switch. The switch is usually cylindrical in shape and has an electrical connection and an air hose attached. In many cases, the small air hose comes loose from the Pressure Switch fitting and/or falls off. This air hose is required to detect the air pressure from the wash tub as tub fills. With no air pressure, the switch will not function and the result will be a wash tub that fills continuously to the point of overflowing. The same would be true, if the air hose has any cracks, splits or holes in it.

Water Leaking While Filling: The other end of this hose runs to the air dome fitting on the side of the wash tub. If the lower end of the hose comes off, the water will begin to spill onto the floor under the washer, but the tub will not fill.

What to Look For: Check for the obvious. Make sure the air hose is still attached to the pressure switch and air dome. Then, inspect the entire length of the hose, paying particular attention to areas where chaffing may occur and at the points where the hose connects to the pressure switch and air dome. Vibrations from the washer can cause some wear if the hose is rubbing against anything, and the ends of the hose can stretch over time and not seal properly.

On most top loaders the Pressure Switch is located inside the operator console behind the knob that controls the water level. This knob is commonly referred to as the "Load Level", "Load Size" or "Water Level". On front loader washers the pressure switch location is usually located in the back of the washer behind the wash tub, or along the interior cabinet wall adjacent to the wash tub.

How to Correct: If the hose has slipped off, cut about ½" off the end of the hose and reattach to the pressure switch and/or air dome fitting. Take a small zip tie and place it around the hose at the point where it connects to the fitting. DO NOT over tighten as this can damage the air hose fitting. Just make the zip tie snug enough to keep the air hose from sliding off. If the hose has any cracks or holes, you can attempt to seal them by using electrical tape. Replacement tubing can be purchased at any hardware store.

NOTE: This is not an all inclusive fix, as the Pressure Switch can fail in some cases and cause similar symptoms. This is merely a preliminary check for a common occurrence that I have discovered. It can give symptoms of a major problem, resulting in a call for a repairman, only to turn out to be a simple fix that any Do-It-Yourselfer should be able to check and correct themselves. I hope this information is found to be helpful and saves many of you a future service call.

Thanks for using FixYa - a 4 THUMBS rating is appreciated for answering your FREE question.

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