Displaying the service LED
Service LED (LD1)
•Error code display
Alternate display of error generating address and error code
Example At outdoor unit address 51, abnormal discharge temperature (Code 1102)
•Flag display
Example SV1 ON under only compressor 1 operated
ABCDEFGH
A Flag 1 | E Flag 5 |
B Flag 2 | F Flag 6 |
C Flag 3 | G Flag 7 |
D Flag 4 | H Flag 8 |
12.4. Coping with remote controller abnormality
ENGLISH
ON/OFF –
CENTRALLY CONTROLLED | 1Hr. | |
CHECK | ON OFF | ˚C |
CLOCK |
| |
FILTER
| ˚C |
|
| CHECK MODE |
STAND BY | INDOOR UNIT | ERROR CODE | NOT AVAILABLE | TEST RUN |
DEFROST | ADDRESS NO | OAUNITADDRESSNO |
|
| CLOCKON OFF |
|
|
| FILTER |
|
| CHECK |
TEMP. | TIMER SET | TEST RUN |
REMOTE CONTROLLER |
|
|
|
|
A
ADisplay: Appears when current is carried
| Phenomenon |
| Cause |
| How to cope with abnormality |
| Unit does not operate and | (1) | Outdoor unit power was not turned on. | (a) Check voltage between remote controller terminals. | |
| display stays off even after | (2) | Transmission or remote controller cable | (i) | Remote controller fails when voltage is 17 to 30 V. |
| pressing remote controller |
| was shorted or connection failure. | (ii) If there is no voltage | |
| ON switch. | (3) | Power cable contact failure | • | Check the number of remote controllers and indoor units con- |
1 | (4) | Remote controller was erroneously con- |
| nected | |
| does not light up) |
| nected to unit remote controller termi- | • | Remove wire from transmission cable terminal block (TB3) on |
|
|
| nal block. |
| outdoor unit, and check voltage between terminals. |
|
| (5) | Too many remote controllers or indoor |
| • If voltage is 17 to 30 V, check (2) and (4) at left. |
|
|
| units were connected. |
| • If there is no voltage, check (1) and (3) at left. |
| “HO” indicator does not dis- | (1) | No transmission cable was connected | • Check all items at left. | |
| appear. Unit does not oper- |
| to transmission cable terminal block on |
|
|
| ate even if the switch is |
| the indoor unit. |
|
|
2 | pressed. | (2) | Outdoor unit address was erroneously |
|
|
|
|
| set |
|
|
|
| (3) | Indoor unit address was erroneously |
|
|
|
|
| set. |
|
|
| Display comes on once but | (1) | Indoor unit power was not turned on. | • Check item at left. | |
3 | disappears immediately after |
|
|
|
|
| a press of the switch. |
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|
|
37
