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Ownerʼs Manual 25
ENGLISH
Maintenance and Service
NAME PLATE RATING MINIMUM MAXIMUM
208/230 V 187 V 253 V
265 V 239 V 292 V
ROOM AIR CONDITIONER VOLTAGE LIMITS
COMPLAINT CAUSE REMEDY
n
Voltage
n
Overload
n
Fan motor
n
Condenser air flow
restriction
n
Condenser fins
(damaged)
n
Capacitor
n
Wiring
n
Refrigerating system
n
Air filter
n
Exhaust damper door
n
Unit undersized
n
Block at indoor (curtain or
bedclothes etc.) or
outdoor discharge air.
n
Cross flow fan
n
Copper tubing
• Check the voltage. See the limits on the preceding
page. If not within limits, call an electrician.
• Check overload, if externally mounted.
Replace if open. (If the compressor temperature is
high, remove the overload, cool, and retest.)
• If not running, determine the cause. Replace if
required.
• Remove the cabinet. inspect the interior surface of
the condenser; if restricted, clean carefully with a
vacuum cleaner (do not damage fins) or brush. Clean
the interior base before reassembling.
• If condenser fins are closed over a large area on the
coil surface, head pressures will increase, causing the
compressor to cycle. Straighten the fins or replace the
coil.
• Test capacitor.
• Check the terminals. If loose, repair or replace.
• Check the system for a restriction.
• If restricted, clean or replace.
• Close if open.
• Determine if the unit is properly sized for the area to
be cooled.
• Remove it and make certain there is nothing within
20” back and front of sleeve & front grille.
• Check the set screw or clamp. If loose or missing,
correct. If the blower or fan is hitting air guide,
rearrange the air handling parts.
• Carefully rearrange tubing not to contact, compressor,
shroud, and barrier.
Compressor
cycles on
overload.
Insufficient
cooling or heating.
Excessive noise.