- 187 -
Troubleshooting
+0.7V
-0.7V
Press the reset key (K3) of outdoor unit
PCB and check the display.
The voltage between
two lines is wave of DC±0.7V as
shown in the following:
Is there no response of
indoor unit on the display
during tracking?
Remove the communication cable
from outdoor unit to indoor unit and
measure 2 lines of outdoor unit side with
scope.
Re-connect the communication line from
outdoor unit to indoor unit and remove all
communication connector from indoor unit PCB,
and then re-connect one by one to locate the indoor
unit obstructing the communication,
and then replace the PCB.
Locate the indoor unit having the
communication error after 2 minutes and check the
duplication of PCB address.
(If the address of indoor unit is duplicated,
communication error occurs)
-In such a case the communication error appears
from more than 2 sets of indoor units whose
addresses are wrong.
Check the outdoor communication
cable of PCB and connector and then
replace the PCB.
good
bad
If there is no trouble in the address, replace the PCB
after checking the communication cable.
Yes
No
No
Yes
Yes
8-2-21. Communication error after completion of tracking
Outdoor unit display
Indoor unit display
Judgment method
Causes
(Operation)
(Timer)
(Fan)
(Filter)
(Removing frost)
- In case that the communication is not available for 2 minutes during operation
-
between indoor and outdoor unit.
- Communication error between indoor unit and outdoor unit
DB98-17816A(1)_8 3/2/04 9:35 AM Page 187
Summary of Contents for DVM Series
Page 76: ... 75 Memo ...
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Page 156: ... 155 Memo ...
Page 280: ... 279 Exploded Views and Parts List 31 1 56 1 31 5 31 4 31 3 31 2 56 2 57 ...
Page 281: ... 280 Exploded Views and Parts List 9 F Type cont 31 1 56 1 31 5 31 4 31 3 31 2 56 2 57 ...
Page 285: ... 284 Exploded Views and Parts List 9 ...
Page 287: ... 286 Exploded Views and Parts List 9 31 1 31 4 31 2 31 5 31 6 31 3 57 1 57 2 58 G Type cont ...
Page 291: ... 290 Exploded Views and Parts List 9 ...
Page 292: ... 291 Exploded Views and Parts List 31 1 31 6 31 5 31 4 31 2 31 3 62 1 62 2 63 1 63 2 ...
Page 298: ... 297 Exploded Views and Parts List 31 1 31 6 31 5 31 4 31 2 61 1 61 2 62 1 65 2 31 3 ...
Page 358: ... 357 Memo ...
Page 361: ... 360 Wiring Diagram 10 10 1 2 4 way cassette type Cooling only AVMCC ...
Page 362: ... 361 Heat pump AVMCH ...
Page 369: ... 368 Wiring Diagram 10 070F This Document can not be used without Samsung s authorization ...
Page 370: ... 369 Wiring Diagram 080 100 This Document can not be used without Samsung s authorization ...
Page 371: ... 370 Wiring Diagram 10 100F This Document can not be used without Samsung s authorization ...
Page 373: ... 372 Wiring Diagram 10 080 100 This Document can not be used without Samsung s authorization ...
Page 374: ... 373 Wiring Diagram 100F This Document can not be used without Samsung s authorization ...
Page 385: ... 384 Schematic Diagram 11 050 This Document can not be used without Samsung s authorization ...
Page 389: ... 388 Memo ...