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Hi. My autoclave door won't open because chamber pressure is too low. What should I do?

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Turn it on and bring up the temperature. The pressure inside will increase as the temperature increases.

Posted on Aug 19, 2019

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Posted on Jan 02, 2017

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But, E4 is to do with Temp or Pressure not right.
"

Code E4:constant temperature and constant pressure failed.

(the chamber pressure tolerance is greater than 0.25bar or temperature tolerance greater than 2.5?)


Solution:

A. please check if you can open the solenoid valve which the steam gets into.


B. please refer to E2 process
---------------------
For E2 try:

Code E2:Chamber overpressure

(The chamber pressure is above 2.4 bar for longer than 2 seconds)


Solution:

A. Please check when the pressure rises, the chamber inner temperature will also rise up. If not or rise up very slowly, then you should check the inner temperature sensor, please refer to E1-C1 process.


B. The chamber keep vacuum pressure, the vacuum pressure will be -0.7 bar within 4 minutes under normally room temperature, and it will above 0.1 bar within 5 minutes if the pressure do not leak out, otherwise, you should check the chamber cover, solenoid valve, safety valve, vacuum pump, connector welded points, till you find the problems where and why the pressure leak out, then solve the problems if you find it.

C. During the machine normally working cycle, please observe if the machine vacuum could be lower than -0.6 bar, even lower than -0.7 bar if the machine is still cold.


D. Adjust the chamber cover and tighten a little if necessary.

E. When you run a cycle for the first time with a packed or non packed instruments and it comes up with E2, please don't worry. It will not come out with the E2 alarm again when you run it the second time.

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1 Answer

Washing machine door wont open - hotpoint


Hi,
Never reach inside the washing machine with it connected to the mains. The door interlock is always live.
There are several reasons why a Hotpoint door could be jammed shut.
•A broken door catch or door frame where the door catch screws in (they are rubbish on many Hotpoints - always breaking) you can sometimes get the door open if you push the door firmly in as you open it
•If there is water still inside the washing machine, then the door wont open either on these Hotpoint washing machines (not on some others though) If this is the case, when you try to open the door the ****** won't try to move down at all. You can open the door usually if you drain the machine. (only applicable with door interlocks that have a rubber pressure hose attached to them)
•A faulty door interlock
•The pressure chamber can be blocked on some earlier Hotpoint washing machines which gives the same effect as having water in the machine. Basically the washer "thinks" there is water in when there isn't. This would require the washing machine being stripped down to remove and clean the pressure chamber bottle. This cause is only applicable to washing machines where a small rubber hose is connected to the door interlock. This hose allows the door mechanism to be locked and unlocked by air pressure activated by water rising inside the pressure chamber bottle attached at the other end on the tub. Gunge can block the very small aperture where the pressure hose fits to the pressure chamber bottle.
Thanks for contacting fixya.com

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Hi,
Never reach inside the washing machine with it connected to the mains. The door interlock is always live!
There are several reasons why a Hotpoint door could be jammed shut. One of them is the part you describe which is called the ******. With some older Hotpoint models, there is a cable that runs from the door interlock to the motor. When you operate the door catch or button, this part "pecks" down onto the drive belt or the end of the armature's shaft. If the drum is moving, the ****** will slip on the rotating belt or armature and disengage the door interlock. If the drum is not moving, the ****** meets resistance and the door opens. Therefore if the ****** has come off, or is loose, it can stop the door opening. When you attempt to open the door does this part move?
Other things that can stop the door opening are -
A broken door catch or door frame where the door catch screws in (they are rubbish on many Hotpoint’s - always breaking) you can sometimes get the door open if you push the door firmly in as you open it
If there is water still inside the washing machine, then the door wont open either on these Hotpoint washing machines (not on some others though) If this is the case, when you try to open the door the ****** won't try to move down at all. You can open the door usually if you drain the machine. (only applicable with door interlocks that have a rubber pressure hose attached to them)
A faulty door interlock
The pressure chamber can be blocked on some earlier Hotpoint washing machines which gives the same effect as having water in the machine. Basically the washer "thinks" there is water in when there isn't. This would require the washing machine being stripped down to remove and clean the pressure chamber bottle. This cause is only applicable to washing machines where a small rubber hose is connected to the door interlock. This hose allows the door mechanism to be locked and unlocked by air pressure activated by water rising inside the pressure chamber bottle attached at the other end on the tub. Gunged can block the very small aperture where the pressure hose fits to the pressure chamber bottle.
Thank You for contacting Fixya.com

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HI

There are several reasons why a Hotpoint door could be jammed shut. One of them is the part you describe which is called the ******. With some older Hotpoint models, there is a cable that runs from the door interlock to the motor. When you operate the door catch or button, this part "pecks" down onto the drive belt or the end of the armature's shaft. If the drum is moving, the ****** will slip on the rotating belt or armature and disengage the door interlock. If the drum is not moving, the ****** meets resistance and the door opens. Therefore if the ****** has come off, or is loose, it can stop the door opening. When you attempt to open the door does this part move?
Other things that can stop the door opening are -
  • A broken door catch or door frame where the door catch screws in (they are rubbish on many Hotpoints - always breaking) you can sometimes get the door open if you push the door firmly in as you open it
  • If there is water still inside the washing machine, then the door wont open either on these Hotpoint washing machines (not on some others though) If this is the case, when you try to open the door the ****** won't try to move down at all. You can open the door usually if you drain the machine. (only applicable with door interlocks that have a rubber pressure hose attached to them)
  • A faulty door interlock
  • The pressure chamber can be blocked on some earlier Hotpoint washing machines which gives the same effect as having water in the machine. Basically the washer "thinks" there is water in when there isn't. This would require the washing machine being stripped down to remove and clean the pressure chamber bottle. This cause is only applicable to washing machines where a small rubber hose is connected to the door interlock. This hose allows the door mechanism to be locked and unlocked by air pressure activated by water rising inside the pressure chamber bottle attached at the other end on the tub. Gunge can block the very small aperture where the pressure hose fits to the pressure chamber bottle.
Thank you

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