Advertisement
Service Support System
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
Poor cooling
exhaust kit is venting outdoors
Verify the unit is not frosted
over and the drain is working
Verify the water tank is empty,
drain the tank if necessary
Verify the unit is the proper
size for the room being cooled.
Cannot adjust
the
When using Dehumidify or
Temperature
Fan Mode the temperature
(Temperature
adjustment button is disabled
buttons do not
work)
When Dehumidify mode is
The Fan
selected and the room
speed cannot
temperature is lower than 77
be adjusted
degrees the fan speed is fixed
at the low setting
CPN10XHJ
Page 3 of 7
1. Verify the fan motors
are working properly and
the fan blades are
attached securely to the
2. Verify the thermostat
is cycling the unit on and
3. Inspect the wiring to
properly
the Control PCB.
4. Verify the unit is
properly charged with
Inspect the wiring from
the Display PCB to the
1. Verify the fan motors
are working properly and
the fan blades are
attached securely to the
2. Inspect the wiring
from to and from the fan
motors
WHEEL-
BLOWER
CONDENS
off properly.
ER
refrigerant
Control PCB
P.C.B.-
CONTROL
BOARD
P.C.B.-
CONTROL
motors.
BOARD
motor.
AC-
N/A
N/A
8000-30
AC-
5210-
N/A
N/A
139
WHEEL-
AC-
AC-
BLOWER
5210-
8000-
CONDENS
139
ER
30
Advertisement
