Carrier 51CV/GY - Manual (Page 13)

TROUBLE SHOOTING GUIDE
If you have problems with your room air conditioner,
check this convenient guide before contacting your service representative.
POSSIBLE CAUSES SOLUTIONS
UNIT DOES NOT START
• Unit may have come unplugged.
• Fuse may have biown.
• Circuit breaker may have been tripped.
• Unit may have been left on AUTO.
UNIT IS NOT COOLING/HEATING ROOM
• Unit’s air output is blocked.
• Temperature setting not high or low enough.
• Dirty air filter.
• Room very hot or coid when unit is started.
• Exhaust or vent left open.
UNIT MAKING NOISES
WATER DRIPPING OUTSIDE
• Condensation run-off during very hot and humid
weather is normal.* **
• Check that unit is securely plugged into wail socket.
• Replace the fuse.*
• Reset circuit breaker. *
• Switch into MANUAL mode.
• Remove any curtains, blinds or furniture that may be
blocking unit’s output.
• Reset unit to a lower or higher temperature setting.
• Remove and clean filter.
• Allow sufficient amount of time for unit to heat or cool
room. Use timer to start cooling early before outside
temperature, cooking heat or gatherings of people
make room hot and uncomfortable.
• Close exhaust or vent.
• Clicking, gurgling and whooshing noises are normal
during operation of the unit.
’ Units with heat feature a thermostatically operated
drain valve in the basepan. The valve automatically
opens to drain condensate. In the case of unusual
water drippage, check to make sure drain valve is
not blocked.
WATER DRIPPING INSIDE
• Unit not installed level.
ICE OR FROST FORMS ON COIL
• Low outside temperature.
• Dirty filter
• Unit must be installed level for proper run-off of
condensation. Check that installation is level and
make any necessary adjustments.
• When outdoor temperature is approximately 55°F
or below, frost may form when unit is in cooling mode.
Switch unit to FAN operation until ice or frost melts.
• Remove and clean filter.
*/f circuit breaker is tripped repeatediy, or fuse is biown more than once, contact a quaiified eiectrician.
** When casing is instailed using proper installation steps, unit is properly pitched toward the outdoors to allow for condensation run-off. An
Accessory External Drain Kit is available to route excess unit condensation away from building exterior. If unit is installed where condensate
drainage will drip onto pedestrians or neighboring property, contact your independent Carrier Dealer, or call 1 -800-CARRIER to order the
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