Table of Contents
Checking
code
No ACK abnormality
6607
(continued)
System
Generating
Display of
com-
unit
trouble
position
address
Address
–
which
should not
be existed
Checking
Meaning, detecting method
code
6608
No response abnormality
Though acknowledgment of receipt
(ACK) is received after transmission,
no response command is returned.
Detected as error by transmission
side when the same symptom is
repeated 10 times with an interval of
3 seconds.
Note:
The address/attribute shown on
remote controller indicates the
controller which has detected
error.
Meaning, detecting method
When no ACK signal is detected in 6 continuous times with 30 seconds
interval by transmission side controller, the transmission side detects
error.
Note : The address/attribute shown on remote controller indicates the
controller not providing the answer (ACK).
Detecting
Cause
method
(1) IC unit is keeping the
–
memory of the original group
setting with RC although the
RC address was changed
later.
The same symptom will
appear for the registration
with SC.
(2) IC unit is keeping the
memory of the original
interlocking registration with
Fresh Master with RC
although the Fresh Master
address was changed later.
Cause
(1) At the collision of mutual
transmission data when
transmission wiring is
modified or the polarity is
changed while turning the
power source on, the wave
shape changes detecting
error.
(2) Repeating of transmission
error due to noise.
(3) Damping of transmission line
voltage/ signal due to
exceeding of the acceptable
range for transmission wiring.
• Farthest
• RC wiring
(4) Damping of transmission
voltage/ signal due to
improper type of
transmission line.
• Wire size
- 144 -
Cause checking method &
Countermeasure
As some IC units are keeping the
memory of the address not existing,
delete the information.
Employ one of the deleting method
among two below.
(1) Deletion by remote controller.
Delete unnecessary information by
the manual setting function of
remote controller.
(2) Deletion by connecting information
deleting switch of OC unit.
Be careful that the use of this
method will delete all the group
information set with RC and all
the interlocking information of
Fresh Master and IC unit.
(a) Shut down OC unit power
source, and wait for 5 minutes.
(b) Turn on the dip switch SW2-2
provided on OC unit control
circuit board.
(c) Make OC unit power source, and
wait for 5 minutes.
(d) Shut down OC unit power
source, and wait for 5 minutes.
(e) Turn off the dip switch SW2-2
provided on OC unit control
circuit board.
(f) Make OC unit power source.
Checking method & Countermeasure
(a) Generation at test run.
Turn off the power sources of OC
unit, IC unit and Fresh Master for
more than 5 minutes simultaneously,
and make them again.
→ Returning to normal state means
the trouble detection due to
transmission line work while
powering.
(b) Check (3) and (4) of the causes left.
(c) Investigate the transmission wave
shape/noise on transmission line
according to
of transmission wave shape/noise>.
Less than 200m
Less than 12m
Much possibility if 6602 is generated.
2
More than 1.25mm
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Troubleshooting
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