HS35 won't shutoff at 50% RH

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Hello, I just finished testing a RS 35 Dehumidifier (DH). I used a separate humidity meter (HM) to compare. When I set the DH to 50% RH, it never completely (fan & compressor) shuts off automatically when the humidity reaches the level set (HM = 44-46%). The power light blinks and the compressor usually shuts off, but the fan never stops. The compresssor eventually turns back on. When the RH is~45% and I switch the DH from 50 to 70, the power light blinks for 1-2 minutes and the compressor shuts own, then the fan shuts down. And, when I initially set the DH to 30% and the HM gets down to 30% then I switch the DH to 50%, it goes into shutdown mode, compressor shuts off, the power light blinks for 1-2 minutes, and then the fan shuts off. I got the same result with two different HS 35's. It seems to be a design issue. Is this normal?

Asked on Jun 30, 2025 - 11:34:56am
Answers

Dear Charles,  

Thank you for your detailed feedback regarding the operation of your HS35 dehumidifier. We appreciate your thorough testing and observations.  

The behavior you described—where the compressor stops but the fan continues running when the set humidity level is reached—is indeed a normal part of the unit's design. This process is crucial for efficient defrosting. The fan continues to operate to ensure proper air circulation, which helps evaporate any residual moisture from the coils and prevents frost buildup. This not only maintains optimal performance but also extends the lifespan of the unit.  

The blinking power light and the delayed fan shutdown (e.g., 1–2 minutes after adjusting settings) are part of the defrosting cycle. Your consistent results with two separate HS35 units confirm that this is standard operation and not a malfunction.  

If you have any further questions or require additional assistance, our professional technical support team is always available to help. Please don’t hesitate to reach out to us for any concerns about your dehumidifier or other products.  
 

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Alorair

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