YMGI: Your Modern Green Idea
YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World!
41
TROUBLESHOOTING
PROBLEM
CAUSE/SOLUTION
System does not restart.
Cause:
The system has a built-in three-minute delay to prevent short and/or rapid
cycling of the compressor.
Solution:
Wait three minutes for the protection delay to expire.
Indoor unit emits unpleasant odor when
started
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.
You hear a “water flowing” sound.
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.
A thin fog or vapor coming out of the
discharge register when system is
running.
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.
You hear a slight cracking sound when
the system stops or starts.
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.
The system will not run.
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.
The unit is not heating or cooling
adequately.
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.
Water leakage from the outdoor unit.
Cause:
It is normal for the outdoor unit to generate condensate water in the
reverse cycle heating and defrost mode.
Solution:
This is normal. No action is required.
Water leaking from the indoor unit into 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.
The unit will not deliver air.
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.