25
A Check of indoor fan motor
9-6. TROUBLESHOOTING FLOW
CN211
Indoor power P.C.board
Fuse (F11)
Indoor terminal
P.C.board
Varistor
(NR11)
CN121
Are soldered points of the
connector correctly soldered to
the indoor power P.C. board?
Is the resistance 0 (short circuit) or (open circuit)?
Yes ( 0 or )
Yes
Pay enough attention to the high voltage on the
fan motor connector.
No
Yes
No
Turn OFF the power supply.
Check connector CN211 visually.
Disconnect lead wires from connector CN211 on indoor power P.C. board.
Measure the resistance between lead wires No.1 and No.4 and then No.4 and No.7.
Turn ON the power supply. Stop it if the unit operates.
Insert screwdriver into air outlet to rotate indoor fan
motor slowly for 1 revolution or over, and measure the
voltage No.2(+) and No.1(-) on CN121.
No
(others)
Replace the indoor power/terminal P.C. board
and the indoor control P.C. board.
Does the voltage repeat 0 VDC and 5 VDC?
Yes
No
Are lead wires connected?
Reconnect the lead wires.
Resolder it.
Replace the indoor fan motor.
MS-GH13VA
OBH664B
