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Service Support System
The set
temperature
only shows on
This is normal operation, after
the display for
adjusting the temperature the
a moment
display reverts to the
after
temperature value in the room.
adjustment
(where
applicable)
Verify the thermostat is set for
a value ~ 10 degrees lower
than the room temperature
No cooling,
Verify the air filter is clear
fans are
Verify there is nothing
running
obstructing air flow through the
Verify the water tank is empty ,
drain the tank if necessary
Verify the thermostat is set for
a value ~ 10 degrees lower
than the room temperature
No Cooling
Verify the air filter is clear
Fans are NOT
Verify there is nothing
running
obstructing air flow through the
Verify the water tank is empty ,
drain the tank if necessary
CPN10XHJ
Page 4 of 7
1. Verify the thermostat
is cycling the unit on and
2. Inspect the wiring to
exhaust kit
properly charged with
1. Inspect the wiring
from the Control PCB to
the evaporator fan motor
2. Verify the continuity of
the Overload protector.
exhaust kit
3. Verify the continuity of
N/A
off properly.
CONTROL
the Control PCB.
3. Verify the unit is
refrigerant
and condenser fan
motor.
CONTROL
the compressor
windings.
N/A
N/A
P.C.B.-
AC-
5210-
BOARD
139
P.C.B.-
AC-
5210-
Fan Motor
BOARD
139
N/A
N/A
N/A
N/A
AC-
4550-
309
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