submitted by CNOJuanit 4039 days ago (via wiki.lifeidea.org)
And when it comes to a specialized appliance such as a heat pump, going pro is really the only option for installation.
If you've got a banging or rattling noise coming from the back of the refrigerator, you may have a loose compressor or fan. While you are at this, check for indications of ice melting and re-freezing-smooth semi-icicles and softened cardboard packages.