5-2-2-3
5
E04 Indoor/Outdoor Abnormal Communication
Malfunction Decision Conditions
During startup and operation of cooling and heating, the data received from outdoor unit in indoor unit signal
transmission is checked whether it is normal.
Malfunction Caused
Faulty indoor unit PCB.
Faulty outdoor unit PCB.
Indoor unit-outdoor unit signal transmission error due to wiring error.
Indoor unit-outdoor unit signal transmission error due to breaking of wire in the connection wires between the
indoor and outdoor units.
Troubleshooting
YES
YES
YES
NO
When abnormality indication starts again
Measure the AC voltage at terminal 1 & 2 of outdoor unit
terminal board
Is the measured voltage 220-230-240V?
●
AC power supply abnormal fluctuation
●
Defect in communication circuitry
●
Replace the PCB
of outdoor unit PCB
●
Improper connection at terminals
●
Check indoor/outdoor connecting cable
indoor/outdoor
●
Improper connection at terminals
●
Defect in receiver/transmitter module of
●
Replace the indoor unit PCB
●
Check indoor/outdoor connecting cable
indoor/outdoor
the communication circuitry in indoor
unit PCB
Measure the DC voltage at terminal 2 & 3 (communication
terminals) of outdoor unit terminal board
Is the measured DC voltage fluctuate between 10~70V?
Measure the AC voltage at terminal 1 & 2 of indoor unit
terminal board
Is the measured voltage 220-230-240V?
YES
Measure the DC voltage at terminal 2 & 3 of indoor unit
terminal board
Is the measured DC voltage fluctuate between 10~70V?
For safety reason and to prevent
component breakdown, always switch
off the power before remove and
connect the component.
Caution
NO
NO
NO
SM830283-00_欧州向け R32シングル36-71形TD&SM.indb 3
2020/01/29 21:17:50
Содержание S-3650PF3E
Страница 20: ...19 MEMO SM830283 00_欧州向け R32シングル36 71形TD SM indb 19 2020 01 29 21 46 03 ...
Страница 178: ... MEMO 1 13 5 SM830283 00_欧州向け R32シングル36 71形TD SM indb 5 20 01 30 10 26 09 ...
Страница 198: ... MEMO 2 4 1 3 SM830283 00_欧州向け R32シングル36 71形TD SM indb 3 2020 01 29 19 52 20 ...
Страница 204: ... MEMO 3 2 1 3 SM830283 00_欧州向け R32シングル36 71形TD SM indb 3 20 01 28 11 25 46 ...
Страница 270: ... MEMO 5 4 3 SM830283 00_欧州向け R32シングル36 71形TD SM indb 3 2020 01 29 21 17 57 ...
Страница 272: ... MEMO 6 1 SM830283 00_欧州向け R32シングル36 71形TD SM indb 1 20 01 20 10 15 08 ...
Страница 294: ... MEMO 7 21 SM830283 00_欧州向け R32シングル36 71形TD SM indb 21 20 01 28 11 22 25 ...
Страница 321: ...202001 SM830283 00_欧州向け R32シングル36 71形TD SM indb 1 20 01 23 9 32 11 ...