We've had this machine for about three years now with no trouble. Recently we noticed the digital display is reading "HI", when it normally reads the current humidity in the room. I also don't believe the compressor is shutting off, but running steady. It appears to be doing its job since there is water being pumped out regularly. However I don't believe the humidity is really that high right now, probably about 55%. I'm suspecting that the humidistat may be bad on the machine? I did thoroughly clean the coil and dust around the humidistat. Thanks in advance for your help.

Dehumidifiers - Amcor - AD400E Dehumidifier