Service Support System
CPN10XHJ
Page 3 of 7
Poor cooling
Verify the thermostat is set for
a value ~ 10 degrees lower
than the room temperature
Verify the air filter is clear
Verify there is nothing
obstructing air flow on the
outside of the unit and the
exhaust kit is venting outdoors
Verify the unit is not frosted
over and the drain is working
properly
Verify the water tank is empty,
drain the tank if necessary
Verify the unit is the proper
size for the room being cooled.
1. Verify the fan motors
are working properly and
the fan blades are
attached securely to the
motors
2. Verify the thermostat
is cycling the unit on and
off properly.
3. Inspect the wiring to
the Control PCB.
4. Verify the unit is
properly charged with
refrigerant
WHEEL-
BLOWER
CONDENS
ER
AC-
8000-30
N/A
N/A
Cannot adjust
the
Temperature
(Temperature
buttons do not
work)
When using Dehumidify or
Fan Mode the temperature
adjustment button is disabled
Inspect the wiring from
the Display PCB to the
Control PCB
P.C.B.-
CONTROL
BOARD
AC-
5210-
139
N/A
N/A
The Fan
speed cannot
be adjusted
When Dehumidify mode is
selected and the room
temperature is lower than 77
degrees the fan speed is fixed
at the low setting
1. Verify the fan motors
are working properly and
the fan blades are
attached securely to the
motors.
2. Inspect the wiring
from to and from the fan
motor.
P.C.B.-
CONTROL
BOARD
AC-
5210-
139
WHEEL-
BLOWER
CONDENS
ER
AC-
8000-
30
