Table of Contents
Advertisement
Air Conditioner
6 .2 Installation Issues
Refer to the following table for issues regarding the
installation of the air conditioning system. Use the
installation manual in conjunction with the remedies in
the following table to correct any installation issues.
Possible
Problem
Cause
The system will
The push-on
not start.
connectors or
butt splices
became
disconnected
during
installation.
The system runs
The air sensor
continuously.
was installed in
the improper
location.
The system has
• The ducting
low airflow or is
has been
short cycling.
crushed,
restricted, or
is leaking air.
• The supply
air is blowing
into the
return-air
stream.
The unit is not
• The ambient
efficient in
temperature
cooling.
is too high
for cooling.
• There is an
excessive
heat load on
the system.
• The set point
on the Q3
control is set
too high for
cooling or
too low for
heating.
EN
Remedy
• Disconnect the power
supply and open the
electric box.
• Check the wiring
diagram and make
corrections if
necessary.
• Refer to the "Q3
Control and
ASCDU15HV 1161
Wiring Diagram" on
page 12.
Remove and install
the air sensor into the
proper location. The
proper factory installed
location is at the bottom
center of the evaporator
intake opening utilizing
the two holes in the
chassis for the clamps.
Refer to component
number 22 in the
"System Component
Identification" on page
9.
• Ensure the ducting is
straight, smooth, and
as taut as possible.
• Seal any leaks in the
ducting.
• Redirect the supply air
so that it is not blowing
into the return-air
stream.
When cooling, the air
conditioner will operate
most efficiently in
outside air temperatures
below 95 °F (35 °C).
At higher outside air
temperatures, the unit
will operate but at a
reduced capacity. A
high-pressure shut down
may occur at outside
ambient air temperatures
near 130 °F (54 °C).
Possible
Problem
Cause
The compressor
The dampers
cycles on the
or supply vents
low-pressure
(if present) are
switch when the
faulty, closed,
evaporator fan
or blocked.
is running with
little and/or no
airflow.
7 Operation Checks
Many air conditioning problems are caused by the
improper operation of the product. When diagnosing an
air conditioning problem, always check the functionality
of the appliance before replacing components. This
section contains information on how to properly operate
the air conditioner and the Q3 control.
WARNING: FIRE AND/OR EXPLOSION
HAZARD .
R-410A refrigerant systems operate at higher
pressures than standard R-22 systems. Do not use
R-22 to service the equipment or components on
R-410A refrigerant equipment. Failure to obey this
warning could result in death or serious injury.
WARNING: BREATHING HAZARD . Failure to
obey these warnings could result in death or
serious injury .
• Refrigerants are heavier than air. They can "push out"
the oxygen in your lungs in an enclosed space. To
avoid possible death or difficulty breathing:
– Never sniff a refrigerant.
– Never purge refrigerant into an enclosed room or
space. All refrigerants must, by law, be reclaimed.
– If an indoor leak is suspected, thoroughly ventilate
the area before beginning work.
• Never burn refrigerant as poisonous gas will be
produced.
• Always follow EPA guidelines.
WARNING: BURN HAZARD .
Liquid refrigerant can be very cold. To avoid
possible frostbite or blindness, avoid contact
and wear gloves and goggles. If liquid refrigerant
does contact your skin or eyes, get medical help
immediately. Failure to obey this warning could
result in death or serious injury.
Operation Checks
Remedy
Clean, replace, or
open the damper or
supply vents. Refer to
the Installation and
Operation Manual for
the specific procedures.
29
Advertisement
Table of Contents
