Air con not working. Operation and timer lights flashing, then operation light flashes and then lights go off. Air con is blowing air but the outside unit is not blowing any air.

7 Flash==== Different Operation Mode
Indoor Unit is Set in Different Cool/Heat Operation Mode.....

It depends on the model as some models error codes differ slightly but this is the typical code for operation x 4, timer x 7:
VDD permanence stop protection (Electric air clean)
When the air cleanness monitor trial protection operates 4 times.
> Only clean air permanent stop.
[Diagnosis Point]
The front panel is closed.
The foreign body such as dust doesn't adhere

• Once abnormality has occurred during operation, the unit
will stop its operation, and Timer LEDs blink.
• Although Timer LED goes off when power supply is turned
off, if the unit is operated under a breakdown condition, the
LED will light up again.
• In operation after breakdown repair, the Timer LED will no
more blink. The last error code (abnormality) will be stored in
IC memory.
• To make a diagnosis:
1. Timer LED start to blink and the unit automatically
stops the operation.
2. Press the CHECK button on the remote controller
continuously for 5 seconds.
3. "- -" will be displayed on the remote controller display.
Note: Display only for "- -". (No transmitting signal, no
receiving sound and no Power LED blinking.)
4. Press the "TIMER" or button on the remote
controller. The code "H00" (no abnormality) will be
displayed and signal will be transmitted to the main
unit.
5. Every press of the button (up or down) will increase
abnormality numbers and transmit abnormality code
signal to the main unit.
6. When the latest abnormality code on the main unit
and code transmitted from the remote controller are
matched, power LED will light up for 30 seconds and
a beep sound (continuously for 4 seconds) will be
heard. If no codes are matched, power LED will light
up for 0.5 seconds and no sound will be heard.
7. The breakdown diagnosis mode will be canceled by
pressing the CHECK button continuously for 5 sec-
onds or without any operation the remote control for
30 seconds.
8. The LED will be off if the unit is turned off or the
RESET button on the main unit is pressed.

When you have the error code, we can work out what to do next.

Operation =
Flashing Display Timer = Yes
Turbo =
LED Display = E1
Explanation and Checking points = Indoor unit room thermistor error - Open or Closed Circuit - Check and replace if required

Operation = Yes
Flashing Display Timer = Yes
Turbo =
LED Display = E2
Explanation and Checking points = Indoor unit pipe thermistor error - - Open or Closed Circuit - Check and replace if required


Operation =
Flashing Display Timer =
Turbo = Yes
LED Display = E3
Explanation and Checking points = Indoor unit fan motor malfunction - Check and replace if required


Operation =
Flashing Display Timer = Yes
Turbo = Yes
LED Display = E6
Explanation and Checking points = EPROM error - Check and replace PCB if required


Operation = Yes
Flashing Display Timer = Yes
Turbo = Yes
LED Display = Flashing
Explanation and Checking points = Option code error - Check and input new option code if required via wireless remote controller


Operation = Yes
Flashing Display Timer =
Turbo = Yes
LED Display =
Explanation and Checking points = Outdoor unit temperature sensor - Open or Closed Circuit - Check and replace if required

If operation light is normal and timer light flashes twice, the error is:
Serial signal (reverse) error, at operation start up
Most likely a faulty outdoor controller PCB. Around $250 for new board plus labour.

I have one that the operation light flashes 7 times and the timer light flashes 2 times. Error code says Discharge pipe temperature error. Is there an easy fix?Thanks!!

Please cancel your timer setting by reset the power. And also remove battery from your remote and reset it. Now start your unit.

This the common problem with all a/c holders. Without knowing the function of Timer on and Timer off, if it's pressed the unit will start only at setting time.

Please remove the battery from your remote and reset it. And then with use of your manual, set the timer if you need., otherwise normal function will be activated.

O4ID Pipe Sensor/temp sensor Open. Check and replace it.

you most likely need a service guy to go out and take a look