Installation Check (electrical test of the outdoor unit)
1
2
3
1.
Check the following before powering on the unit.
1) Check whether the drain pan heater has been properly
installed, wiring has been properly performed, and the
removed components have been returned to the
original positions.
2) Check the insulation resistance of the drain pan
heater.
• Use the tester (500 VDC) to check that the insulation
resistance between 1 terminal and the ground
terminal and between 2 terminal and the ground
terminal is equal to or higher than 1M
Ω
.
3) Check the continuity of the outdoor unit.
• Use the tester to check that the continuity between
the screw on the front grille and the ground terminal
reads 0
Ω
.
• When there is no continuity, retighten the screws
securing the front plate and the bottom frame to
increase the area of contact with the screw. Then,
carry out the continuity test again.
2.
Check the following after powering on the unit.
• Turn on the power supply and check that the temperature
of the drain pan heater will rise.
• Touch the bottom of the outdoor unit by hand and
check the temperature rise.
• If the outdoor temperature is high, the heater will not
be energized which is not a failure.
(Operation of thermo sensor: Turned on at 23˚F
(–5˚C) and off at 34˚F(1˚C).)
3.
Install the remaining components to the original
positions.
• Be careful not to confuse screw types.
See
Installation Procedure (1)
.
1) Install the service lid.
2) Install the stop valve cover.
• The drain pan heater is hot; do not touch it with bare hands.
CAUTION
1
2
Appearance of the outdoor
unit may differ from some
models.
2P326981-2
Ground terminal
1 terminal
1
2 terminal
2
Screw of the front grille
Installation Procedure (7)
6.
Install each component to the original position.
• Be careful not to confuse screw types. See
Installation Procedure (1)
.
1) Install the front plate.
2) Install the anti-drip cover, if provided.
3) Install the top plate.
