Check that the refrigerant and electrical connections are correct
Check that no foreign bodies or tools are on or under equipment.
Check for possible leaks in connections
Check that the lines are well fixed and insulated
Check that the passages through the piping structures are well sealed
Check that the water drains are free
Free and unobstructed supply and return grilles
The air filters are installed and clean.
Check with a calibrated thermometer that the temperature control is accurate.
Check grounding
Check supply voltage, amp ratings of fuses and circuit breakers.
Check that the wires are compatible with the electrical load.
Check that the electrical connections are tight.
Check that the refrigerant pipes do not touch the electrical wiring.
The compressor housing was heated for at least 12 hours.
Check that the batteries in the remote control are charged.
