5-2-1-7
5
2
Power on
2-1
Is the indoor unit powered off?
Is/was the power to the outdoor unit cut off?
1-1
1-2
Disconnect the connector mentioned above on the control PC board
of the indoor unit control PC board, and see whether the E04 goes off
after several minutes. (When doing so, if two remote controllers are
being used and the wireless remote controller is the main remote
controller, set the other remote controller as the main.)
Replace wireless remote control parts including wiring.
4-3
4-4
Is the LED on the indoor unit control PC board blinking?
4-5
Are all the remote controllers of the other indoor
units connected to that outdoor unit displaying E04?
4-7
The nonvolatile memory (EEPROM) on the indoor unit’s control PC board is either not installed,
improperly installed or the nonvolatile memory is faulty. Correct this or after replacing the
nonvolatile memory, write model data to it in the remote control detailed settings mode.
4-6
Are the CHK pin and/or TEST pin on the indoor unit control PC
board short-circuited?
4-1
Is the wireless remote controller connected to on the indoor unit’s
control PC board?
4-2
Is the indoor/outdoor wiring connected correctly?
2-1
3-2
3-3
Was the number of indoor units increased or decreased after
auto address setting was complete?
3-1
Conduct checks prior to auto address setting.
3-2
3-2
After turning the power
on, wait three minutes
1-2
3-1
Correct the wiring
Yes
Yes
Yes
Yes
Yes
No
No
No
4-4
4-5
Yes
No
Remove the short
4-2
Yes
No
4-3
4-5
Yes
No
No
No 4-1
Check the indoor unit addresses from the remote control’s
detailed settings mode.
Is it Not Set (99), or is the indoor unit’s address duplicated?
3-3
Indoor/
outdoor
wiring
4 Indoor
unit
control
PC board
3 No. of
Indoor
Units
1 Power
Source
E04 Error in Indoor Unit Receiving Signal from the Outdoor unit
Error Detection Method
Error Diagnosis
When there is no communication within a 3-minute period from the outdoor unit. Or, judged an error when no reply comes
from the outdoor unit.
The outdoor unit is not turned on.
When the network of indoor/outdoor operation line was wired, the (SHORT) setting of the terminal resistor switch on the
outdoor control PC board was set on multiple units (four or more).
When the power was turned on after auto address setting was completed, the number of indoor units had been changed.
Forgot to turn on the indoor unit.
The CHK pin and/or TEST pin on the indoor unit’s control PC board are shorted.
Forgot to install the nonvolatile memory (EEPROM) when replacing the indoor unit control PC board.
Mistakenly set the indoor unit address to Not Set in the remote control’s detailed setting mode.
When indoor unit addresses are duplicated.
•
•
•
•
•
•
There is a short, open, wrong contact or grounding of the indoor/outdoor operation line.
•
There is an error in the receiving circuit on the signal output PC board (optional control PC board).
•
Malfunctions of the outdoor unit
•
•
The thermistor inside the indoor unit is grounded.
•
•
1.
2.
4-6
4-7
Yes
No
Replace the outdoor unit control board
Replace the indoor unit control board
Yes
No
ACXA73-3129* : 4-Way Cassette Type (Type U3) Indoor Unit Control Board
ACXA73-3440* : Middle Static Pressure Duct Type (Type F3) Indoor Unit Control Board
OPTION
RC
TEST Pin
DISP Pin
DISP Pin
CHK Pin
EEPROM
EEPROM
OPTION
RC
TEST Pin
CHK Pin
SM830283-00_欧州向け R32シングル36-71形TD&SM.indb 7
2020/01/29 21:17:44
Содержание S-3650PF3E
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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 ...