Carrier 38QUS009DS Owner's Manual

Also see for 38QUS009DS: Owner's manual Installation manual Service manual Installation manual Installation manual

Contents

4. TROUBLE SHOOTING7GB-7Please carry out the following check before making a service call.CONCERN PLEASE FIRST CHECK!• Is there a power failure?• Are the batteries in the remoter control fresh?• Are the clock and timer on the remote set correctly?• Are the temperature and mode settings correct?• Are the air filters clean?• Are the windows and doors closed?• Is air flow unrestricted in & out of indoor & outdoor units?• Is fan speed on high and louvers allowing maximum flow?Unit does not work at allPoor cooling or heating• Has a switch been turned off, a circuit breaker tripped or a fuse blown?Guides, Tips and CasutionsThe following may occur during normal operation, and may not indicate malfunction.A 3 minute delay protects the compressor.Automatically happens in heating mode - prevents cold airblowing onto occupants.Frost removal on outdoor unit is in progress (5 – 10mins).May occur when unit temperature is low and room air is hot andhumid.“Hissing”: normal – gas pressure equalizing when compressorstops or starts."Squeaking": normal expansion and contraction of plastic andmetal parts.Rushing air – normal when louver resets its position.May occur when air conditioner is used for the first time or has notbeen used for a long time.Usually caused by chemicals, cigarette smoke, cooking etc. If not thecase call your suitable contractor.Room temperature is the same as that selected with the remote. If notthe case call a suitable contractor.May occur when outdoor temperatures are close to or below zerodegrees Celsius.Normal when power is restored after a power failure.Interference from cell phone towers and remote boosters maycause the unit to malfunction.Disconnect the power and then re-connect.Press the ON/OFF button on the remote controller to restartoperation.If the problem is not resolved call a suitable contractor.Case ExplanationCooling or heating is delayed.Fan speed changes – off , very slowand then normalThe heating operation stopssuddenly and defrost-light blinks.Mist coming out of the indoor unitDust discharges from the unit.Emits a peculiar odour.Changes to fan only while cooling orheating.Turns on automaticallyLow volume sounds are emitted bythe air conditionerPoor heating performanceOperation is erratic, unpredictableor unresponsive.