Installation Manual
67
Electrical Wiring
7-segment LED
SW02M
auto address
• The address of Indoor Units would be set by Automatic addressing
1) Wait for 3 minute after applying power supply
(Main and Sub Outdoor Unit, Indoor Unit).
2) Press the switch of the Outdoor Unit (SW02M) for 5 seconds.
3) A "
88
" is indicated on 7-segment LED of the Outdoor Unit control board.
4) For completing addressing, 15 minutes are required depending on numbers of Indoor Unit connection set.
5) Numbers of Indoor Unit connection set whose addressing is completed are indicated for 30seconds on
7-segment LED of the Outdoor Unit control board.
6) After completing addressing, address of each Indoor Unit is indicated on the wired remote control display win-
dow. (CH01, CH02, CH03, ............. CH06: Indicated as numbers of Indoor Unit connection set.)
Auto Addressing
CAUTION
- In replacement of the Indoor Unit PCB, always perform Automatic Address Setting again. If
power supply is not applied to the Indoor Unit, operation error occurs.
- Auto addressing is only possible on the main PCB
Test Run
The test operation starts automatically by operating the DIP switch and buttons in the main unit as follows.
(1) Turn on the system and several numbers will be displayed. After about 40 sec, turn on the Dip switch No.7, 8. turn on the No. 1 Dip
switch for cooling test and No. 1, 2 on for the heating test operation.
(2) If you turn on the No.7 and 8 DIP switch and press the black button for 2.5 seconds, you will see a character that looks like ‘St’ in the
7segment. When you turn both No. 7 and 8 off at this time, the test operation will start.
(3) Turn on to operation mode with all indoor devices selected. (Strong wind mode, set temperature to 30°C for heating and 18°C for air con-
ditioning)
(4) When the compressor is normally operated with the operating logic, the target frequency will be 30Hz and when operated for more than
7 minutes after step (3), the unit will proceed to the next step.
(5) Turn on one constant speed compressor, maintain the target frequency of the compressor to 40Hz and maintain this condition for 10
minutes. (for series)
(6) Turn off the constant speed compressor that is on and at the same time turn on the other compressor.
(7) Maintain the compressor that has been turned on newly in step (6).
(8) Maintain all compressors on for 10 minutes until the rotational switching operation of turning on each compressor at a time is completed.
(9) Proceed to the next stage when step (8) is completed.
(10) Turn off the static speed compressor, wait 3 minutes and raise the target frequency of the compressor to 95Hz. This operation keeps
about 7min.
(11) Start the oil return operations.
(12) When the oil return operation is completed, set the compressor frequency to 0 and maintain all indoor devices off for 5 minutes.
(13) When step (12) is completed, it means that the test operation is completed. Turn off the No. 1, 2 of DIP switch in the main unit and
must reset the system.
(14) If there is any error during the operation, the error code will be shown in 7segment and the test operation will automatically end.
(The error does not include poor operation of the static speed compressor and communication error from the indoor device.)
