Trouble shooting 41
OUTDOOR UNIT Error Method:
Suction Pressure Sensor Error
Check Point 3 : Check voltage of Main PCB (DC5.0V)
CN119
WHITE
RED
1 2 3
1 2 3
BLACK
Detective Actuators:
Detective details:
Forecast of Cause :
Suction pressure sensor
When any of the following conditions is satisfied, a suction pressure
sensor error is generated.
1. 30 seconds or more have elapsed since the outdoor unit power was turned
on and pressure sensor detected value 0.06V continued for 30 seconds
or more.
2. 30 seconds or more have elapsed since the outdoor unit power was turned
on and pressure sensor detected value 5.0V was detected.
1. Suction pressure sensor connector disconnection, open
2. Suction pressure sensor defective
3. Main PCB defective
Check Point 1 : Check the suction pressure sensor connection state
Connector connection state check
Cable open check
Check Point 2 : Check the suction pressure sensor
Sensor characteristics check
* For the characteristics of the suction pressure sensor,
refer to the "Service Parts Information 9".
Suction pressure sensor (CN119:1-3)
Main PCB (CN119:1-3) voltage value = 5V
Remove the sensor from Main PCB, check the voltage.
If the voltage does not appear, replace Main PCB and set up original address.
PRESSURE SENSOR (LOW)
PS
OK
OK
DC
02-46
Outdoor unit :
POWER
MODE
ERROR
2
8
(L1)
(L2)
(L6)
(L5)
(L4)
(L3)
6
PUMP
DOWN
LOW
NOISE
PEAK
CUT
Indicate or Display:
Economy lamp : Continuous flash.
ERROR CODE : [E : 86]
Indoor Unit : Operation lamp: 8 time Flash,
Timer lamp: 6 time Flash
