Owner’s Manual
25
ENGLISH
Maintenance and Service
NAME PLATE RATING
MINIMUM
MAXIMUM
208/230 V
187 V
253 V
265 V
238 V
292 V
ROOM AIR CONDITIONER VOLTAGE LIMITS
COMPLAINT
CAUSE
REMEDY
■
Voltage
■
Overload
■
Fan motor
■
Condenser air flow
restriction
■
Condenser fins
(damaged)
■
Capacitor
■
Wiring
■
Refrigerating system
■
Air filter
■
Exhaust damper door
■
Unit undersized
■
Cross flow fan
■
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.
• 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.
