Fujitsu AOUH18LPAS1, Service Manual

Page: 37 / 169

1. Error code
When a problem occurs in the system or the connected device, the error content is notified by dis-
playing the code.
NOTE: This function is only available in a system with indoor or IR receiver units equipped with in-
dicator lamps to show the error content.
Errors, once displayed, will be automatically stored in the PC board of the indoor unit. Even if the
power is disconnected, the memory containing the error history will not be erased.
If another error occurs later, the stored error memory will be updated automatically and replaced with
the new one. (Previous error will be erased.)
1-1. How to check the error memory
When an error occurs, the operation lamp (Green) and the timer lamp (Orange) indicate the error
content by blinking. To check the error memory, follow the procedures below.
1. Stop the operation of the air conditioner, and then disconnect the power supply.
2. Reconnect the power supply.
3. In one of the following two methods, the memorized error is only displayed during the “3 min-
utes ST”* state period.
• Start the operation and then press the TEST RUN button on the remote controller.
• Press the MANUAL AUTO button on the indoor unit for 10 seconds or more.
Error memory display
2 minutes 20 seconds
Starting operation and then;
- Press TEST RUN button on the remote controller.
or
- Press MANUAL AUTO button on the indoor unit for 10 seconds or more.
In case of “No memorized error display” ,
TEST RUN display will be shown.
Turning on the power supply
*: The “3 minutes ST” period lasts 2 minutes and 20 seconds after turning on the power supply.
1-2. How to erase the error memory
The error memory can be erased in one of the following two methods.
• Manual erase: Pressing the MANUAL AUTO button on the indoor unit while the “Error memory dis-
play” is being shown. (Short beep emits for about 3 seconds.)
• Automatic erase: After continuing the normal operation of the air conditioner without error for 2
hours or longer after displaying the error memory as described in How to check the error memory .
(Except FAN operation mode.)
1-1. How to check the error memory
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1. Error code
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