6-3 SYSTEM DOES NOT RUN.
Check sensor
connection and
measure its
resistance
3- IN INDOOR UNIT THERE IS ONE LED BLINKING AT LEAST
For the meanings of the faults, see paragraph 5.17
TEMPERATURE
SENSOR DAMAGED
Replace the
sensor
COMMUNICATION
ERROR
Is the
communication
fuse blown?
Replace fuse
100mA
The fuse may be
not fitted rightly
in the fuseholder
Check for right
connection of
communication
wires
Check outdoor
unit. Is there any
led on?
See section 6.5
Turn off power
supply and after
3 minutes turn
on again
Outdoor unit
PCB assy is
defective
NO
YES
YES
NO
See section 6.6
FAULT ON THE
OUTDOOR UNIT
Replace outddor
unit PCB
28
Summary of Contents for 38.7104.050
Page 9: ...2 DIMENSIONAL DATA MRAF98R5IAA MRAF128R5IAA 9...
Page 12: ...4 ELECTRICAL DATA 4 1 Electric Wiring Diagrams MRAF98R5IAA MRAF128R5IAA 12...
Page 27: ...6 3 SYSTEM DOES NOT RUN 27...
Page 29: ...6 4 OUTDOOR UNIT DOES NOT RUN AND NO FAULT IS DISPLAIED 6 5 ONLY OUTDOOR UNIT IS OFF 29...
Page 30: ...6 6 OUTDOOR UNIT FAULT SIGNALING 30...
Page 32: ...32...
Page 33: ...6 8 NOISY PROBLEM 33...
Page 34: ...7 CHECKING ELETRICAL COMPONENTS 7 1 34...
Page 35: ...7 2 35...
