Fujitsu AMUG24LMAS, Руководство по обслуживанию

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Troubleshooting 23-2
Detective details:
Forecast of cause:
1. Connector connection failure
2. Pressure sensor failure
3. Main PCB failure
Detective actuators:
Outdoor unit main PCB
03-31
Outdoor unit discharge pressure sensor error
(AOUG36/48LMAS1)
Indicate or Display:
Indoor unit
Operation lamp: 8 times Flash,
Timer lamp : 6 times Flash
Wired remote control
Error code : [E : 86]
n: n times blinking : Light ON : Light OFF
Mode Error
2 8 6
Outdoor unit (AOUG36/48LMAS1)
30 seconds or more after power-on,
when pressure sensor detection value
detects the condition below continuosly
for 30 seconds or more.
Ps
≤
43.51 psi (0.30 Mpa)
or Ps
≥
725.19 psi (5.00 Mpa)
・ Check if the terminal connection is loose.
・ Check if connector is removed.
・ Check if cable is open.
・
Check if connector is erroneous connection.
Test 2 : Check voltage from main PCB (Parts information 8)
Test 1 : Check the connection of the pressure sensor
DC
DC
With the connector connected to the PCB,
measure the voltage between CN92:2-3
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 1
RED
WHITE
BLACK
2
3
CN92
+
-
A B C D E F