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Remarks:
When this unit were mean to be connected to mul outdoor unit system, below diagnosis table shall be use.
If LD301 lit and at the same me LD302 blinks in a number of mes, this indicates thermistor faulty.
TIMER
LD302
LAMP
BLINKING
BLINKING
4 mes
1 me
4 mes
2 mes
4 mes
3 mes
4 mes
4 mes
4 mes
5 mes
4 mes
6 mes
OUTDOOR
4 mes
7 mes
4 mes
8 mes
4 mes
9 mes
4 mes
10 mes
4 mes
11 mes
4 mes
12 mes
4 mes
13 mes
If LD304 blinks, the number of blinks indicates a communica on error with the corresponding indoor unit connec on.
Detail as per below table.
TIMER
LD304
LAMP
BLINKING
BLINKING
-
1 me
-
2 mes
OUTDOOR
-
3 mes
-
4 mes
Note : This communica on error diagnosis table only applicable for 2 rooms un l 4 rooms mul system model.
Other shall refer to diagnosis table on the electrical cover or inside outdoor service manual.
WIRELESS
WIRED
REMOCON
REMOCON
CODE
CODE
071
01
072
01
073
OUTDOOR TEMPERATURE THERMISTOR
01
074
01
075
01
076
01
077
01
078
01
079
01
080
01
081
01
082
01
083
01
WIRELESS
WIRED
REMOCON
REMOCON
CODE
CODE
COMMUNICATION ERROR BETWEEN OUTDOOR AND
COMMUNICATION ERROR BETWEEN OUTDOOR AND
009
01
COMMUNICATION ERROR BETWEEN OUTDOOR AND
COMMUNICATION ERROR BETWEEN OUTDOOR AND
MEANING
OVERHEAT THERMISTOR
DEFROST THERMISTOR
NARROW PIPE THERMISTOR
(INDOOR NO.1)
WIDE PIPE THERMISTOR
(INDOOR NO.1)
NARROW PIPE THERMISTOR
(INDOOR NO.2)
WIDE PIPE THERMISTOR
THERMISTOR IS OPENED OR SHORTED
(INDOOR NO.2)
NARROW PIPE THERMISTOR
(INDOOR NO.3)
WIDE PIPE THERMISTOR
(INDOOR NO.3)
NARROW PIPE THERMISTOR
(INDOOR NO.4)
WIDE PIPE THERMISTOR
(INDOOR NO.4)
NARROW PIPE THERMISTOR
(INDOOR NO.5)
WIDE PIPE THERMISTOR
(INDOOR NO.5)
MEANING
INDOOR UNIT NO.1
EVEN WHEN INDOOR UNIT IS NOT
INDOOR UNIT NO.2
CONNECTED, IT BLINKS SIMILARLY.
(NOT MALFUNCTION)
INDOOR UNIT NO.3
INDOOR UNIT NO.4
– 130 –
DETAILS
MAIN CHECK POINT
1. THERMISTOR
2. CONNECTION OF THERMISTOR IS FAULTY
3. THERMISTOR CIRCUIT
DETAILS
MAIN CHECK POINT
1. INDOOR TO OUTDOOR C-D LINE CABLE
NOT CONNECTED PROPERLY.
2. COMMUNICATION CIRCUIT DAMAGED.
3. DC35V POWER SUPPLY DAMAGED.
4. EFFECT OF EXTERNAL NOISE TO C-D LINE
CABLE.
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