YMGI TTWA Series, Installation Instructions & User Manual

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YMGI
•
Your Modern Green Idea
35
TROUBLESHOOTING
POSSIBLE CAUSES SOLUTIONS
UNIT DOES NOT START

Unit may have become unplugged

Fuse may have blown

Circuit breaker may have been tripped

Unit may be off or in 24V thermostat control mode.

Check section on Advanced Settings to verify set
properly.

Unit may be in a protection or diagnostic failure
mode. See section on ERROR codes.

Check that plug is plugged securely in wall receptacle.
Note : Plug has a test/reset button on it. Make sure that
the plug has not tripped.

Replace the fuse.

Reset circuit breaker.

Turn unit on.
DISPLAY HAS STRANGE NUMBERS / CHARACTERS
ON IT

The unit may be in a diagnostic mode. Check diagnostic
codes--- checking Control section to determine if the unit
has had a failure.

The unit may be set for °C (instead of °F). See the
Advanced Settings to change.
UNIT MAKING NOISES
• Clicking, gurgling and whooshing noises are normal
during operation of unit.
UNIT NOT COOLING / HEATING ROOM
•
Unit air discharge section is blocked
• Temperature setting is not high or low enough
•
Note: Set point limits may not allow the unit to
heat or cool the room to the temperature desired.
Check the section on Advanced Settings
•
Unit air filters are dirty.
•
Room is excessively hot or cold when unit is
started
•
Vent door left open
• Unit may be in a protection or diagnostic failure
mode. Check section on Intelligent Self ---
checking Control.
• Compressor is in time delay. There is a protective
time delay (approx. 3 minutes) on starting the
compressor after a power outage (or restarting
after it has been turned off), to prevent tripping of
the compressor overload.
• Make sure that curtains, blinds or furniture are not
restricting or blocking unit airflow.
•
Reset to a lower or higher temperature setting.
• Remove and clean filters.
• Allow sufficient amount of time for unit to heat or cool the
room.
• Start heating or cooling early before outdoor temperature,
cooking heat or gatherings of people make room
uncomfortable.
• Close vent door.
•
Wait approximately 3- minutes for compressor to start
WATER DRIPPING OUTSIDE
•
If a drain kit has not been installed, condensation runoff
during very hot and humid weather is normal. See Note 2.
If a drain kit has been installed and is connected to a
drain system, check gaskets and fittings around drain for
leaks and plugs.
WATER DRIPPING INSIDE

Wall sleeve is not installed level

Wall sleeve must be installed level for proper drainage of
condensation. Check that installation is level and make
any necessary adjustments.
ICE OR FROST FORMS ON INDOOR COIL
•
Low outdoor temperature
• Dirty filters
•
When outdoor temperature is approximately 55 °F
(12.8°C) or below, frost may form on the indoor coil unit
when the unit is in Cooling mode. Switch unit to FAN
operation until ice or frost melts.
•
Remove and clean filters.
COMPRESSOR PROTECTION
• Power may have cycled, so compressor is in a
restart protection.
• Random Compressor restart : Whenever the unit is
plugged in, or power has been restarted, a random
compressor restart will occur. After a power outage, the
compressor will restart after approximately 3 minutes.
• Compressor Protection : To prevent short cycling of the
compressor, there is a random startup delay of 3 minutes
and a minimum compressor run time of 3 minutes.
NOTES :
1. If circuit breaker is tripped or fuse is blown more than once, contact a qualified electrician.
2. If unit is installed where condensation drainage could drip in an undesirable location, an accessory drain kit should be installed and
connected to drain system.