Trouble shooting 25
OUTDOOR UNIT Error Method:
Pressure Sensor Error
Outdoor unit main PCB
30 seconds or more after power-on, when pressure sensor detection value
detects the condition below continuosly for 30 seconds or more.
Ps < 37.71 psi (-0.26 Mpa) or Ps > 816.56 psi (5.63 Mpa)
=
Detective Actuators: Detective details:
Indicate of Display:
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 cable is open.
・Check if connector is erroneous connection.
Forecast of Cause:
Outdoor unit :
POWER
MODE
ERROR
2
8
(L1) (L2) (L6)(L5)(L4)(L3)
6
PUMP
DOWN
LOW
NOISE
PEAK
CUT
Test 2 : Check Voltage from Main PCB
Test 1 : Check the connection of the pressure sensor
DC
DC
With the connector connected to the PCB, measure the voltage between CN91:3-4
of the Main PCB.
Characteristics of pressure sensor
4.5
(5.0)
0.5
0
Output [DCV]
Pressure [psi (MPa)]
362.59 725.19
PRESSURE
SENSOR
PS
(2.5)
2.5
>>Upon correcting the removed connector or miss-wiring, reset the power.
OK
If the voltage is not on the connector, replace Main PCB.
If the voltage is incorrect value, replace the Pressure sensor.
1
2
3
4
1
2
RED
WHITE
BLACK
3
4
CN91
+
-
02-28
=
Indoor Unit :
Operation lamp: 8 times Flash,
Timer lamp : 6 times Flash
ERROR CODE : [E : 86]
n
: n times blinking
: Light ON: Light OFF
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