Fujitsu ASU7RLF1 Service Instructions Manual page 83

SERVICE PARTS INFORMATION 7
Heater Unit
Check Point 1 : Check Connections
Check connection of connector
( Loose connector or open cable )
AOU18 /24RLXFZH
WHITE
BLACK
1 3
1 3
CN53
BLACK
Check Point 2 : Check electrical components
Check Check Fuses.
>> If Fuse is open, check connection, and replace Fuse.
Check Point 3 : Check Heater wire.
Remove connector, check resistance of Heater wire.
Read wire Resistance value
Black - White 321 ~ 368
If Resistance value is abnormal, replace Heater Unit.
HEATER
THERMOSTAT
131°F (55°C)
at 77°F(25°C)
02-51