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CONTROL SYSTEM
d.
STEP 4 : AUTO LED WALK TEST.
e.
STEP 5: AUTO REALY WALK TEST:
COMPRESSOR
INDOOR FAN: LOW
f.
STEP 6: FREQUENCY TESTING:
g.
STEP 7: INPUT TEST.
S
T
B
Y
L
O
P
E
R
L
TIMER LED
FILTER LED
C
O
O
L
L
H
E
A
T
L
h.
STEP 8: TIMING RESET TEST (WATCH DOG).
12-28
All the LEDS will turn OFF.
All the LEDS will turn ON for 1 second one by one in the following
sequence:
STAND-BY
OPERATE
In PRX all the LEDS will turn ON for 1 second one by one in the following
sequence : 18 °c
High IFAN
Auto IFAN
TIMER
FILTER
All relays will energize one by one in the following sequence:
OUTDOOR FAN R. V.
INDOOR WATER PUMP
When the relay walk test is completed, the next test will start
automatically.
If the frequency measuring process fails the COOL LED will turn ON.
In order to move to the next step, press ON/OFF button on the remote
control.
The test purpose is to check the analog real time indicators (thermistors,
LEVEL and clock) according to the table below.
LED Indicator
E
D
E
D
E
D
E
D
The test purpose is to verify that the CPU rise time after power failure
is between 1 to 3 sec, test results are indicated on the LEDS : STAND-
BY,OPER, TIMER and FILTER turning ON one by one.
The results of the test are coded as follows:
Pass condition:
1 sec - STAND-BY and OPER are turned ON
2 sec - STAND-BY, OPER and TIMER are turned ON
Revision
TIMER
20 °c
22 °c
24 °c
Med IFAN
Low IFAN
COOL
HEAT.
SWING or OUTDOOR WATER PUMP
MID
HIGH.
Condition for LED to be ON
R
o
o
m
h t
r e
m
t s i
r o
25°c
n I
d
o
r o
c
l i o
h t
r e
m
t s i
r o
Outdoor coil thermistor
Clock
L
E
V
E
L
2
&
3
L
E
V
E
L
4
0
FILTER
COOL
26 °c
28 °c
STAND-BY
HEATER 1
HEATER 2
25°c
25°c
Service Manual - EDS
HEAT.
30 °c
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