Revised 5/14/2020
7
Wiring
Safety Precautions
Outdoor Unit Wiring
WARNING
• Be sure to disconnect the power supply
before working on the unit.
• All electrical wiring must be done
according to local and national
regulations.
• Electrical wiring must be done by
a qualified technician. Improper
connections may cause electrical
malfunction, injury and fire.
• An independent circuit and single outlet
must be used for this unit.
DO NOT plug another appliance or
charger into the same outlet. If the
electrical circuit capacity is not enough
or there is a defect in the electrical
work, it can lead to shock, fire, unit and
property damage.
• Connect the power cable to the
terminals and fasten it with a clamp. An
insecure connection may cause fire.
• Make sure that all wiring is done
correctly and the control board cover is
properly installed. Failure to do so can
cause overheating at the connection
points, fire, and electrical shock.
• Ensure that main supply connection
is made through a switch that
disconnects all poles, with contact gap
of a least 3mm (0.118”).
• DO NOT modify the length of the
power cord or use an extension cord.
WARNING
Before performing any electrical or wiring work,
turn off the main power to the system.
TAKE NOTE OF FUSE SPECIFICATIONS
The air conditioner’s circuit board(PCB) is
designed with a fuse to provide overcurrent
protection. The specifications of the fuse are
printed on the circuit board, such as:
Outdoor unit: T20A/250VAC (for
<24000Btu/h unit), T30A/250VAC (for
>24000Btu/h unit)
Wiring
CAUTION
• Connect the outdoor wires before
connecting the indoor wires.
• Make sure you ground the unit. The
grounding wire should be away from
gas pipes, water pipes, lightning rods,
telephone or other grounding wires.
Improper grounding may cause electrical
shock.
• DO NOT connect the unit with the power
source until all wiring and piping is
completed.
• Make sure that you do not cross
your electrical wiring with your signal
wiring, as this can cause distortion and
interference.
Page 14
NOTE: The fuse is made of ceramic.