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Unit warning lights and controls - Fault code
P: Green LED
Q: Red LED
R: Yellow LED
S: Remote control signal receiver
Indoor unit LEDs
Information concerning indoor unit operation, timer status and diagnostic is given by 3 LEDs located on the unit.
•THE GREEN LED (P) shows the following conditions:
-Fault codes (diagnostic);
-During normal operation, the LED is lit.
Once a failure occurs, the LED flashes at intervals of 0.5 seconds. The fault code is deduced from the number of times the LED flashes. Between one flash cycle and the next a pause of 5 seconds elapses.
•THE RED LED (Q) gives the following information:
-During normal operation, the LED is OFF;
-During defrost the LED is lit;
-During the test for wired connection, the LED flashes at 0.1 second intervals.
•THE YELLOW LED (R) shows the operation in timer mode. During this operation the LED is lit.
If the timer mode is active and the unit is immediately restarted after a stop, this LED flashes until a new signal is sent to the unit.
In case the Room Controller is not working, obtain a qualified service personnel.
Fault code
Once a failure occurs with the indoor unit in operation, the green unit LED flashes at intervals of 0.5 seconds.
The fault code is deduced from the number of times the green LED flashes, blocking unit operation.
Between one flash cycle and the next one, a pause of 5 seconds elapses.
Table IX: Fault code
Code | Description |
3 | Room air sensor fault |
2 | Condensate discharge pump |
4 | Indoor unit coil sensor fault |
6* | Filter dirty |
7 | Outdoor unit failure |
10 | EEPROM corrupt |
11 | Card serial number damaged |
12 | Address / zone incomplete |
13 | Gas flow distributor corrupt |
14 | Outdoor air thermistor |
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* with enabled code
Table II: Periodical checks
Indoor unit | Every month | Every 4 months | Every year |
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Clean air filter (2) | •(1) | • |
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Clean drain pipe (2) |
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Outdoor unit | Every month | Every 4 months | Every year |
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Clean outdoor coil from outside |
| • | • |
Clean outdoor coil from inside (2) |
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Blow air over electric parts (2) |
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| • |
Check electric connection tightening (2) |
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| • |
Clean fan wheel (2) |
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| • |
Check fan tightening (2) |
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| • |
Clean drain pan (2) |
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| • |
For a good operation of the air conditioner it is recommended to carry out checks and maintenance as indicated. Recommended maintenance intervals may vary depending on the installation environment, e.g. dusty zones, etc.
(1)Increase frequency in dusty zones.
(2)Operations to be carried out by qualified service personnel. Refer also to “Installation Manual”.
GB - 3
