Use and Care Manual
 Page 2
Safety Precautions
mrcool.com
WARNING
Please read the manual in its entirety before installing, operating or repairing.
DO NOT share the electrical circuit with other appliances. Improper or insufficient power supply 
can cause fire or electrical shock.
When connecting refrigerant piping, 
DO NOT let substances or gases other than the refrigerant 
enter the unit. The presence of other gases or substances will lower the unit’s capacity, and may 
cause abnormally high pressure in the operation cycle. This may cause explosion and injury. 
DO NOT connect the ground wire to a gas pipe, water pipe, lightning arrester or telephone wire. 
DO NOT allow children to play with the air conditioner. Children should be supervised around the 
unit at all times.
DO NOT alter the settings of the pressure sensor or other protective devices; if short-circuited or 
modified, fire or even an explosion could occur. 
Installation must be performed by an authorized technician. Improper installation may cause 
water leakage, electrical shock, or fire. 
Installation must be performed according to installation instructions. Improper installation may 
cause water leakage, electrical shock, or fire. 
In North America, installation must be performed in accordance with the requirement of NEC and 
CEC (by authorized personnel only.) Contact an authorized service technician for repair or 
maintenance of the unit.
Only use the included accessories and specified parts for installation. Using non-standard parts 
can cause water leakage, electrical shock, or fire and may cause the unit to fail.
Read Before Installation 
Incorrect installation may cause serious damage or injury.
The seriousness of potential damage or injuries is classified as either a WARNING or CAUTION.
WARNING
CAUTION
This symbol indicates ignoring instructions may cause death or serious injury.
This symbol indicates that ignoring instructions may cause moderate injury
to your person, damage to your unit, or other property.
This symbol indicates that you should NEVER perform the indicated action. 
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Safety Precautions










