Ice Bath Chiller temp climbing

I have a client with a flash chiller (ice bath) on a beverage system. We recently replaced a chiller that seemed to have failed for them -- temp climbing beyond set point by almost 30 degrees Celsius from a setpoint of 36 to 60). It was thought the chiller was defective and was sent back to manufacturer for testing (in warranty). After about 6 weeks of service the new chiller is climbing out of spec similarly. The area is very warm but open with venting to move air).

In trouble shooting with client I have learned that they have been turning the unit off overnight and starting it up fresh every morning. This on/off cycling is not how flash chillers are supposed to be used as they need to create an ice block around the coils to flash cool the beverage lines in the bath. They did this on their own volition to be "green" thinking they were saving on electricity use.

What I don't know is if this on/off cycling could damage the unit itself. I'm thinking that this can't be particularly good for the compressor to go through the heavy cycle every day --- but is this kind of thing an absolute deal breaker in terms of killing the compressor? Or should a new commercial appliance be able to withstand 40 or 50 cycles of this in short order?

Many Thanks

Rob