Carrier 40KMC------301 - Manual (Page 4)

40KMC------310/ 40KMQ------310
GB - 3
E N G L I S H
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.
Unit warning lights and controls - Fault code
P : Green LED
Q : Red LED
R : Yellow LED
S : Remote control
signal receiver
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”.
Table II: Periodical checks
Indoor unit Every month Every 4 months Every year
Clean air filter (2)
•
(1)
Clean drain pipe (2)
•
Outdoor unit Every month Every 4 months Every year
Clean outdoor coil from outside
•
Clean outdoor coil from inside (2)
•
Blow air over electric parts (2)
•
Check electric connection tightening (2)
•
Clean fan wheel (2)
•
Check fan tightening (2)
•
Clean drain pan (2)
•
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.
* with enabled code
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