Sanyo SAP-K77GHAX Technical & Service Manual page 59

(3) Check remote control unit.
1. Try to run with another remote
control unit.
2. Is the operation good ?
First remote control unit is defective.
In the case that the remote control
transmission section is dirty, clean it.
In the case that the remote control
reception section in front of indoor unit
is dirty, clean it.
(4) Check fuse on the indoor P.C.Board.
1. Check fuse (F) on indoor P.C.Board
for continuity.
2. Is fuse blown ?
Is operation lamp ON ?
Indoor P.C.Board is defective.
(5) Check TIMER on the remote control unit.
1. Is timer turned ON ?
2. Is displayed on remote control ?
ON
Yes
Yes
No
No
Yes
Replace the fuse.
Measure resistance of indoor and
outdoor fan motor (FM) winding.
Measure resistance of compressor
motor (CM) winding.
Cancel the timer mode.
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