Fujitsu AB*A12, Service Manual

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Check Point 2 : Check Controller PCB
Trouble shooting 34
OUTDOOR UNIT Error Method:
Discharge Pressure Sensor Error
Indicate or Display:
Outdoor Unit : LED1 Flash, LED4
1 Time Blink
Indoor Unit : Operation LED Flash , Timer LED 3 Times Blink
Swing LED 3 Times Blink
ERROR CODE : E : 32
Detective Actuators:
Outdoor Unit Controller PCB circuit
Discharge Pressure Sensor
Detective details:
When Sensor Detection Voltage is detected at lower than 0.8V for 30 seconds,
or higher than 5.0V, upon 30 seconds have passed after turning on Outdoor
Unit.
Trouble shooting 35
OUTDOOR UNIT Error Method:
Suction Pressure Sensor Error
Indicate or Display:
Outdoor Unit : LED1 Flash, LED4
3 Time Blink
Indoor Unit : Operation LED Flash , Timer LED 3 Times Blink
Swing LED 3 Times Blink
ERROR CODE : E : 32
Detective Actuators:
Outdoor Unit Controller PCB circuit
Suction Pressure Sensor
Detective details:
When Sensor Detection Voltage is detected at lower than 0.8V for 30 seconds,
or higher than 5.0V, upon 30 seconds have passed after turning on Outdoor
Unit.
p
Check Voltage (DC12V) at CN33(1-3) of Controller PCB.
If the voltage does not appear, replace Controller PCB
and set up the original address.
Check Point 1-2 : Check Discharge Output Sensor
p
Check if connector is loose or cable is open.
>> If no abnormal connection is found, replace Discharge
Pressure Sensor. (When removing the sensor, remove from
the connector at Pressure Sensor side, and when installing the
sensor, install it from the PCB side.)
After replacing Pressure Sensor, check operation
condition and pressure in operation. OK
Check Point 1-1 : Reset Power
YES
NO
Does LED error indication reappear?
YES
NO
OK
DC
Forecast of Cause : 1. Discharge Pressure Sensor failure 2. Controller PCB failure
Forecast of Cause : 1. Suction Pressure Sensor failure 2. Controller PCB failure
Check Point 1-1 : Reset Power
Does LED error indication reappear?
Check Point 2 : Check Controller PCB
p
Check Voltage (DC12V) at CN34(1-3) of Controller PCB.
If the voltage does not appear, replace Controller PCB
and set up the original address.
DC
Check Point 1-2 : Check Suction Pressure Sensor
p
Check if connector is loose or cable is open.
>> If no abnormal connection is found, replace Discharge
Pressure Sensor. (When removing the sensor, remove from
the connector at Pressure Sensor side, and when installing the
sensor, install it from the PCB side.)
After replacing Pressure Sensor, check operation
condition and pressure in operation.
06-45