OUTDOOR UNIT Error Method:
Detective Actuators:
Detective details:
Forecast of Cause :
OK
OK
Indicate or Display:
Pressure sensor error
02-30
Trouble shooting 28-2
Error code : 86
Check Point 1 : Check connection of the Pressure sensor
Check Point 2 : Check output voltage of Main PCB
Check Point 3 : Check output voltage of Pressure Sensor
Outdoor unit :
n
: n times blinking
: Light ON: Light OFF
Mode Error L1 L2 L6L5L4L3
2 8
6
Outdoor unit Main PCB
Pressure sensor
30 seconds or more after power-on, when pressure sensor detection
value detects the condition below continuously for 30 seconds or more.
Ps 0 or Ps 5 [MPa]
>
=
>
=
1. Connector connection failure 2. Pressure sensor failure 3. Main PCB failure
Check if the terminal connection is loose.
Check if connector is removed.
Check if connector is erroneous connection.
Check if cable is open.
>> Upon correcting the removed connector or mis-wiring, reset the power.
Check voltage of Main PCB.
(Measure at Main PCB side connector)
>>1 pin(Red) - 3 pin(Black) DC5V 5%
BLACK
WHITE
RED
P20
1
2
3
1
2
3
PS
PRESSURE SENSOR
If the voltage is not correct, replace Main PCB.
Check voltage of Main PCB.
(Measure at Main PCB side connector)
>>2 pin(White) - 3 pIn(Black) Voltage is refer to the following graph.
If the voltage is not correct, replace Presure Sensor.
4.5
0.5
0 5
Pressure [MPa]
Voltage [V]
DC
DC
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