Service manual

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31
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12
Error display :
e47
[Inverter over-voltage trouble] (Only case of 151~251 type)
Indoor unit
Red LED
Green LED
Stays OFF
Keeps flashing
Red LED
1 time flash
Outdoor unit
NO
YES
YES
Remove the foreign matter
such as dust and dirt.
Replace
Is the fuse (F1: 250V, 20A)
blown?
Is there foreign matter
such as dust or dirt on the soldered
surfaces of the control PCB?
NO
The outdoor unit control
PCB is faulty. Replace
● Display Conditions
If the inverter voltage exceeds 340V, (3 times in 20 min-
utes), this error is displayed. After 3 minutes passes, it
can be reset using the remote controller.
Is any foreign
object wedged into the
rotating parts of the
fan motor?
NO
YES
Remove the foreign object.
Turn the
fan by hand several
revolutions. Does itturn
smoothly?
NO
YES
Replace the fan motor.
Is there
foreign matter
such as dust or dirt on
the soldered surfaces
of the control
PCB?
NO
YES
Remove the foreign mater
such as dust or dirt.
Is fuse F3
(250V, 1A)
blown?
NO
YES
Replace the fuse.
Replace the outdoor
unit control PCB.
13
[DC Fan motor abnormal] (Only case of 151~251 type)
Indoor unit
Red LED
Green LED
Stays OFF
Keeps flashing
Red LED
1 time flash
Outdoor unit
Error display :
e48
● Display conditions
When the DC fan motor’s output is ON, if the fan motor’s speed drops to 75 rpm or lower continuously
for 30 seconds or longer, the compressor stops. After a 3-minute delay, the compressor is restarted, but
if this state is detected 5 times within 60 minutes.
YES
Is E52
Cooling operation
E52 Heating operation
displayed in the remote
controller’s
screen?
The 52C is abnormal.
14
[52C Abnormal] (Only case of 301~601 type)
Indoor unit
Red LED
Green LED
Stays OFF
Keeps flashing
Red LED
Green LED
Lights contiously
Keeps flashing
Outdoor unit
Error display :
e52