19
TROUBLESHOOTING
POSSIBLE CAUSES
SOLUTIONS
UNIT DOES NOT START
•
Unit may have become unplugged
•
Fuse may have blown
•
Circuit breaker may have been tripped
S
Unit may be off or in wall thermostat mode.
Check section on dipswitch settings to verify
dipswitches are set properly.
•
Unit may be in a protection or diagnostic failure
mode. See section on Intelligent Self---checking
Control.
•
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. See Note 1.
•
Reset circuit breaker. See Note 1.
•
Turn unit on (bottom right button on keypad).
Note
: If the unit turns on, the LED will be green. If the unit is off,
the LED will be red. If there is no LED on, there is a problem
with power or damage to the control.
UNIT NOT COOLING/HEATING ROOM
S
Unit air discharge section is blocked
S
Temperature setting is not high or low enough
Note
: Setpoint limits may not allow the unit to heat
or cool the room to the temperature desired.
Check section on dipswitch settings.
S
Unit air filters are dirty.
S
Room is excessively hot or cold when unit is started.
S
Vent door left open
S
Unit may be in a protection or diagnostic failure
mode. Check section on Intelligent Self---checking
Control.
S
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.
S
Make sure that curtains, blinds or furniture are not restricting or
blocking unit airflow.
S
Reset to a lower or higher temperature setting.
S
Remove and clean filters.
S
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.
S
Close vent door.
S
Check dipswitch settings for desired comfort.
Wait approximately 3 minutes for compressor to start
DISPLAY HAS STRANGE
NUMBERS/CHARACTERS ON IT
•
The unit may be in a diagnostic condition. Check Intelligent Self---
checking Control section to determine if unit has had a failure.
•
The unit may be set for
_
C (instead of
_
F), see the keypad
configuration section
UNIT MAKING NOISES
•
Clicking, gurgling and whooshing noises are normal during
operation of unit.
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 or below, frost
may form on the indoor coil when 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.
