How to Solve the H2O Issue of a Tumble Dryer

Introduction: How to Solve the H2O Issue of a Tumble Dryer

About: Maker, engineer and researcher at the National Research Council of Italy. Generally I'm interested in the topics of Indoor Environmental Quality and its interaction with energy efficiency, 3D printing, open ha…

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If your tumble dryer displays the error code "H20" but the water tank was empty, this post is for you.

Step 1: Starting Situation

My partner warned me of an anomaly signal of the tumble dryer: error H20 but the water tank was empty. I then started doing some tests. If I tried again to start the appliance, after a few minutes it would stop with the same error code. The use and maintenance manual on the "error resolution" page did not give any useful information as the web did not help me. As a result, I restarted the dryer while trying to figure out if I heard strange noises. Indeed, in the back part in a white plastic casing, there was a noise that was symptomatic of something that did not work properly. I then started to disassemble the back and, surprisingly, I saw that the impeller of the electric pump was broken with the two sheared fins of net

Step 2: Commercial Solution

I imagine that this break occurred due to fatigue. With the code of the electric pump I did a search to check the possibility of finding a useful spare part. Incredible but true I saw that on Amazon this piece was available.

Step 3: 3D Printed Solution

The size and shape of the object made me think that it could be useful to replicate it using a 3D printer. I then modeled the piece with Rhinoceros. I then sent the piece to 3Dprint using a specific filament. Among the different options available I opted for a flexible filament, the ninjaflex. This material has a high level of durability compared to other commercial options available.

Step 4: Reassembling

I then reassembled the impeller on the electropump and reassembled everything. The error no longer occurs! I share the .stl files for those who need it.

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    Question 4 days ago on Step 1

    Hi, I know it’s been a while now but you just helped me detect my dryer error reason. Can you please share the brand and the model that you were fixing. I have Ariston 97b dryer machine and I want to know if I can use the measurements you shared. Thanks in advance!


    Answer 4 days ago

    Of course I can, because it still works perfectly and I can read the informations from the front panel.

    Brand: Indesit
    Model: IDPE G45 A1 ECO

    You have to consider that some parts of Ariston are the same as those used in the Indesit machine. So, they are probably interchangeable. Ex:
    "Elettro Pompa Scarico Condensa Asciugatrice Ariston Indesit C00306876"


    Reply 3 days ago

    Thank you so much for responding so quickly. I actually can’t find the model of my pump even though I tried pretty hard but the part looks just the same and the size fits as well so I hope this will do the job.
    Thanks again for your explanation, it gave me the motivation to look into the problem and than I saw the broken/torn part.


    2 years ago on Step 4

    Can you please send .stl file through