Danby Dehumidifier -- opening case / removing panel - humidity reading at 90% constantly

[SteveH66]

I have a Danby Model DDR060BFCWDB Dehumidifier  (Purchased new in 2019) and it has been working fine up until about 2 weeks ago.  The humidity level is continually reading 90% which is wrong first of all (actual is around 60%) and secondly, based on this reading, one would think the compressor would be running continually but it is not.    If I do turn it off for a bit and back on, I do hear the compressor run, and I do see it cooling and condensing water which runs to my sump pit via a clear drain hose.

The unit has been kept clean and not full of dust or mold or anything like that.  Nonetheless, I suspect it could be the humidity sensor and my next step is to simply open the case / remove the panels to get a closer look and clean the internal components.  Of course Danby support is of no help, and I have not been able to locate any tech documents on this unit.

See below pics for more info, and what I am trying to do is separate / pry off the rear panel after removing the 3 screws.. there appear to be some clips or a mechanism holding it together, so just looking for tips on the correct process to remove that rear panel from the unit.     Thank you!

On another note, and I think I will post this as a separate topic, but I am tired of these residential dehumidifiers failing after a very short life, and as per what I have seen discussed in other threads, a $250 unit is just not worth repairing (economically speaking) through a service company, hence the DIY route.   I am also considering a commercial unit -- one such as the unit at this link.   Does anyone have experience / opinion on units such as this for a residential basement?

Here is a pic of the unit

• 

 

The circled locations are the 3 screws I have removed on the rear panel below

• 

This pic below shows the back of the unit with the rear panel on the right

• 

 

 

 

 

[SteveH66]

I determined how to further disassemble.  There are additional screws accessible from the inside (left side In the 3rd pic above) that once removed allow one to remove the top, 2 end panels and finally that large rear panel on the right.   I have also replaced the small humidity sensor / circuit board assembly with a new one and the unit is working fine again.