Question about Smeg Dishwashers
Stuck in drain cycle
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Posted on Jan 02, 2017
SOURCE: It sounds like drain cycle
Welcome to FixYa.
Based on your description " It sounds like drain cycle is stuck. Is there some type of reset button? " , the good news...It is likely nothing very serious, but the "reset" requires some investigation on your part.
The "drain stuck cycle ( I presume you mean drain pump running constantly ) are directly related with overfill scenarios for Asko dishwashers of this era. This is meaning the control is indicating an overfill has been detected. Whether the unit has actually overfilled or not remains to be seen.
In the event it has, the outlet/drain pump motor is automatically turned on via either the pressure switch or a float in the base if sensing an overfill and removing water from inside the dishwasher will do nothing to resolve this error, but you can...
**before proceeding turn the dishwasher power off via the home breaker panel, or unplug it from the wall if that is possible...most are hard wired to the home electrical...safety first**
The first thing to do is remove the toe panel/kick plate and inspect the base for water. If water is present, with the aid of a sponge, towels, or a wet-dry shop vacuum, absorb the water from the base.
If the unit works fine after resetting the power/breaker it can likely be chalked up to a drain back-up or obstruction in the drain hose or pump.
If not, there are a couple of other possibilities that I'd focus on.
**again insure power to the unit is off**
The first is the float and subsequently, float switch. If you've removed the service panel at the bottom, or toe plate, you need to locate the float and it's switch. It will be located directly behind where your main electrical junction is...
Once you've located the float behind the main connection plate, you should see something like this image below,
With the aid of a long screwdriver or if you can reach it, move the float up and down and listen closely for the switch to "click", indicating it is indeed functioning.
Restore power again, and see if this resolves the issue, if not try this next...
The pressure switch too can cause the drain/outlet pump to run constantly ( and usually all the lights to flash or "F2"...depending on the era and model of the Asko ). As I was saying the pressure switch is the component which controls the normal fill level and the overfill detection...pre float activation. The float is primarily the last ditch safety to notify the user in the event of a overflow, back-flow, or leak underneath the unit to service or call for service to the unit.
It too is located under the machine and is mounted to the sump well assembly as shown, the large arrow indicates the switch while the small is the hose.
The issue is possibly just the hose going to the switch is clogged with debris such as dirt, detergent buildup etc and will be remedied by blowing it out.
The best way to do this is to remove this hose at the switch in the location indicated above, be very careful as to not break the hose off with the part of the switch inside, they can be delicate.
I typically work it loose with a tiny screw driver gently working it away from the switch. Once removed, pour a small amount of hot water, white vinegar or "CLR" through the sump from within the tub...or you can try blowing it through with "lung power".
The other end of the hose is located at the back of the sump well and is quite vulnerable to blockages over time due to detergents, dirt, and such.
This is the location...do not break this or you will need to replace the entire sump well...no fun.
Large arrow is pointing back to pressure switch, small indicates connection to sump well, sorry for the poor quality...it's hard to get in there with a camera phone, ha ha !
That's almost the extent of the possible causes of this error. Of course it could be the pressure switch has failed, the float switch has failed or ultimately the control has failed, but not likely.
Hope this helps move you forward, or even better resolves the issue altogether. Let me know of course, I will help you move further if necessary.
Posted on Nov 27, 2010
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It is possible that the machine does not start off the cycle because there are errors or feedback from the inputs. For the program to start up the main program controller must initiate the INLET/PUMP MOTOR/DRAIN to work when it is commanded .If this does not happen then the voltage at these points must be checked or the fault relates to no voltage/drive from the controller. This means the controller is a suspect.
Check how to remove the control panel: http://www.espares.co.uk/advice/dishwashers/a/3/1287/how-to-replace-a-hotpoint-dishwasher-fascia-p.html
If the water flows then the flow should be good, if not the inlet valve is bad or there is dirt in the filter. Also check the flow at the inlet of the water line. What is most important for the motor to start functioning is that the door switch must be ON when the door is shut or this will be an error for starting the motor. The water pressure must be good and the spraying must be seen to be good. If there is low pumping or pressure then the spray arms will not turn around to inject with pressure. If so the pump must be checked for clogging.
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