Fujitsu R407C Service Manual page 111

ERROR
ERROR
CODE
Transmission
1F
error with
VRF system
21 Software error 1. Error occurence condition
2. Relevant operation
3. Clearance
32 Indoor or
1. Error occurence condition
outdoor unit
error
2. Relevant operation
3. Clearance
CONTENTS
3. Clearance
Transmission between
VRF system and network
convertor is performed
normally.
An incorrect control is
performed by
microcomputer program.
Error code is displayed.
All control items are not
available.
Error is cleared when the
network convertor return to
operate normally after the
power of microcomputer
is reset.
Error occurs on indoor or
outdoor units which are
connected with network
convertor.
Error code is displayed.
Other control methods
are still possible.
When the error of indoor
or outdoor units which are
connected with network
convertor is cleared.
CAUSE
1. Effect of extraneous noise.
2. Network convertor printed
circuit board is faulty.
3. Printed circuit board of
device of VRF system
is faulty.
1. Effect of extraneous noise.
2. Network convertor printed
circuit board is faulty.
1. Indoor unit is faulty.
2. Outdoor units is faulty.
05-35
COUNTERMEASURE
1-3 After the power of VRF system is
reset:
1) If error dosen't occur, printed circuit
board is normal. Please remove
noise sources near VRF system.
2) If error occurs again, remove noise
sources and take measure with
the following countermeasure.
2. Replace the network convertor
printed circuit board.
3. Replace the printed circuit
device of VRF system.
1-1 Check the continuity of error.
1) If error is cleared automatically,
printed circuit board is normal.
Please remove noise sources near
network convertor.
2) If error isn't cleared automatically,
check following.
After the SW104 button of network
1-2
convertor PCB is pressed for more
than five seconds, or the power of
network convertor is reset.
1) If error doesn't occur, printed circuit
board is normal. Please remove
noise sources near network
convertor.
2) If error occurs again, remove noise
sources and take measure with the
following countermeasure.
2. Replace the network convertor printed
circuit board.
1. See troubleshooting of relevant
indoor unit.
2. See troubleshooting of relevant
outdoor unit.
boards of