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RAS – Auto Restart Function
The indoor unit is equipped with an automatic restart facility that allows the unit to restart, at the last set operating conditions, after a power
failure. The operation will resume without warning three minutes after power is restored.
This feature is not set up when these systems are shipped from the factory, therefore it will need to be activated by the installing company.
Generally the process is the same for all RAS products since approx 2001 and is as follows:
To initiate auto restart:
1. Turn the power on. Green On/Off light will flash.
2. Set the system to operate using the remote controller. Green On/Off light will be on constantly.
3. Press and hold down the temporary button for three seconds.
4. The indoor unit will bleep three times to acknowledge set up. In most cases the green light changes to orange.
5. The system will continue to operate during this set up.
6. After set up the system may be stopped using the remote controller.
To cancel auto restart:
1. The system is operating. Green On/Off light will be on constantly.
2. Stop the system operating using the remote controller. Green On/Off light will extinguish.
3. Press and hold down the temporary button for three seconds.
4. The indoor unit will bleep three times to acknowledge cancellation.
5. The system will have stopped operating.
This feature cannot be set if the timer is in operation.
The louver will not swing, if it was previously set, when the system auto restarts.
Fault Codes –
Do Not turn off the power supply before reading the fault codes, doing so will clear the diagnostic memory. Caution
must be taken when removing the access covers as high voltages are present.
Fault codes are displayed through the LEDs flashing at 5 times per second. Note, the green LED will flash once per
second when the system is initially powered.
More specific codes may be obtained, while in the fault mode through the wireless controller
1. Press CHK to enter service mode
2. Navigate through TIMER buttons until all LEDs flash, accompanied by the internal buzzer – compare the
displayed code with the table below
3. Press CLR button to clear the existing fault code (controller displays 7F)
4. Press ON/OFF button to exit service mode.
Initial
Code
code/display
01
01
02
03
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RAS "N" Series
0C
0d
11
12
04
Indoor to outdoor communication (includes compressor thermostat)
05
14
Inverter low voltage or short circuit protection
16
17
Compressor current detected during off-cycle
18
19
1A
1b
1C
07
Indoor to outdoor communication (includes compressor thermostat)
08
Indoor heat exchanger changes temperature – but in wrong direction
1d
Compressor locked rotor current protection
1E
Compressor - high discharge temperature
1F
Compressor current remains too high – after current release
Description
TA sensor open or short circuit
TC sensor open or short circuit
Indoor fan motor problem
Indoor PCB problem
Indoor to outdoor communication
Compressor position circuit
TE or TS sensor open or short circuit
Td sensor open or short circuit
Outdoor fan motor problem
TE sensor fault
Compressor drive circuit
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