Frequently, a problem is minor and a service call may not be necessary, use this troubleshooting guide for apossible solution.When outdoor temperature is approximately65 F or below, frost may form when unit is incooling mode. Switch unit to FAN (only)operation until frost melts.Remove and clean filter.NOTE:If circuit breaker is tripped repeatedly, or fuse is blown more than once, contact a licensed technician.PROBLEM POSSIBLE CAUSE SUGGESTED SOLUTIONAir conditioner willnot operateInefficient or no coolingNoisy unitOdorsWater dripping outsideWater dripping insideIce or frost build-up Low outside temperature.Unit air filter is dirty.Unit is not properly angled toallow water to drain outside.Unit must be installed on an angle for propercondensation run-off. Check the unit andmake adjustments..Formation of mold, mildew, oralgae on wet surfaces.Condensation run-off is normalduring hot and humid weatherAdd flexible tubing to redirect water flow.drain plug and drain base pan.Replace drain plug.Clean unit thoroughly.RemoveLoose parts.Inadequate support.Tighten loose parts.Provide additional support to unit.No power to the unit.Dirty air filter.Inappropriate capacityfor application.Blocked air flow.Power interruption, settingschange too quickly, orcompressor overload tripped.Clean or replace air filter.Check with dealer to determine proper unitcapacity for application.Remove obstruction from grill oroutdoor louvers.Let fan run to restart compressor(in approximately 10 minutes).Check connection of power cord topower source.Check fuse or circuit breaker.Set MODE knob to position otherthan "OFF".16TROUBLESHOOTING GUIDEWAC 5 6 8 USER MAN final 3/2/05 12:23 PM Page 18