Operating instructions

Page 18 of 20
TROUBLESHOOTING
The following is a list of problems that are sometimes encountered when using a room air conditioner.
Possible cause and suggested remedies are given for each problem.
• UNIT WILL NOT RUN
Push reset button on power cord.
Set Fan control to position other than OFF.
Make sure plug is firmly seated in outlet.
Check for blown fuses, tripped circuit breakers.
• LITTLE OR NO COOLING OR HEATING,
(Fan and Compressor run)
Set vent to CLOSED
Remove obstruction from indoor grill or outdoor
louvers.
Dirty air filter. Clean or replace as needed.
Check with dealer to determine proper capacity
unit for application.
• LITTLE OR NO COOLING OR HEATING,
(only fan runs)
For cooling, turn Temperature Control to cooler
setting.
For heating, turn Temperature Control to warmer
setting.
• NOISY UNIT
Tighten any loose parts
Provide additional support for unit.
Normal in high humidity. Stop noise by removing
drain plug or adding condensate drain cup.
Check with dealer to determine proper capacity
unit for application.
• MOUNTING SUPPORT NOT INSTALLED
Some models require removal of storm window
frame before installation.
• FROST ON INDOOR COIL
Clean air filter by vacuuming or washing with
water and mild soap.
Turning Temperature Control to warmer setting
reduces occurrence and duration of frost.
• ODORS IN COOLING
To reduce algae growth, use an algaecide tablet
in base pan; remove drain plug; add condensate
drain cup and hose.
Thoroughly clean unit.
• ODORS IN HEATING
Caused by dust accumulation during unused
months. Odor dissipates quickly with heater use.