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TROUBLESHOOTING
PROBLEM
S
ystem does not restart.
Indoor unit emits unpleasant
odor when started
You hear a“water flowing”
sound.
A thin fog or vapor coming out
of the discharge register when
system is running.
You hear a slight cracking
sound when the system
stops or starts.
The system will not run.
The unit is not heating or
cooling adequately.
Water leaking from the indoor
unit into the room.
The unit will not deliver air.
CAUSE/SOLUTION
Cause: The system has a built-in 5-minute delay to prevent short and/or rapid cycling of the compressor.
Solution: Wait 5 minutes for the protection delay to expire.
Cause: Typically unpleasant odors are the result of mold or mildew forming on
the coil surfaces or the air filter.
Solution: Wash indoor air filter in warm water with mild cleaner. If odors persist, contact a qualified
service professional to clean the coil surfaces.
Cause: It is normal for the system to make“water flowing”or“gurgling”sounds from refrigerant
pressures equalizing when the compressor starts and stops
Solution: The noises should discontinue as the refrigerant system equalizes after two or three minutes.
Cause: It is normal for the system to emit a slight fog or water vapor when cooling extremely humid warm air.
Solution: The fog or water vapor will disappear as the system cools and dehumidifies the room space.
Cause: It is normal for the system to make “slight cracking” sounds from parts expanding and
contracting during system starts and stops.
Solution: The noises will discontinue as temperature equalizes after 2 or 3 minutes.
Cause: There are a number of situations that will prevent the system from running.
Solution: Check for the following:
• Circuit breaker is “tripped” or “turned off.”
• Power button of controller is not turned on.
• Controller is in sleep mode or timer mode.
• Otherwise, contact a qualified service professional for assistance.
Cause: There are a number of reasons for inadequate cooling or heating.
Solution: Check the following:
• Remove obstructions blocking airflow into the room.
• Clean dirty or blocked air filter that is restricting airflow into the system.
• Seal around door or windows to prevent air infiltration into the room.
• Relocate or remove heat sources from the room.
Cause: While it is normal for the system to generate condensate water in cooling mode,
it is designed to drain this water via a condensate drain system to a safe location.
Solution: If water is leaking into the room, it may indicate one of the following.
• The indoor unit is not level right to left. Level indoor unit.
• The condensate drain pipe is restricted or plugged. All restrictions must be removed to allow
continuous drainage by gravity.
• If problem persists, contact a qualified service professional for assistance.
Cause: There are a number of system functions that will prevent air flow.
Solution: Check for the following:
• In heating mode, the indoor fan may not start for three minutes if the room temperature is very low.
This is to prevent blowing cold air.
• In heat mode, if the outdoor temperature is low and humidity is high, the system may need to
defrost for up to 10 minutes before beginning a heating cycle.
• In dry mode, the indoor fan may stop for up to three minutes during the compressor off delay.
• Otherwise, you should contact a qualified service professional for assistance.
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