Carrier 40GRQ Owner's Manual page 18

1.Check whether a irinletsandairoutletsareblocked.
2.Check whether a irswitch, p lugandsocket a reingoodcondition.
3.Check whether f ilteris clean.
4.Check whether m ounting b racket f oroutdoor u nitis damaged o r corroded.
If yes,please contact d ealer.
5.Check whether d rainage pipeis damaged.
1.Disconnect power supply.
2. Clean filterandindoorunit's panel.
3.Check whether m ounting b racket f oroutdoor u nitis damaged o r corroded.
If yes,please contact d ealer.
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