Trouble Diagnosis - Sanyo VW-VF10BG Technical Data & Service Manual

7. Trouble Diagnosis

Problems and locations to inspect
Alarm display
Alarm
Alarm LED
code
LD005 LD006
– – –
Blinks Blinks
6 times. 10 times.
F10 6A
Blinks Blinks
6 times. 12 times.
F12 6C
Blinks Blinks
6 times. 15 times.
F15 6F
Blinks Blinks
7 times. 13 times.
F29 7D
Blinks Blinks
14 times. 12 times.
P12 EC
Blinks Blinks
10 times. 10 times.
J10 AA
Blinks Blinks
10 times. 11 times.
J11 AB
Blinks Blinks
10 times. 12 times.
J12 AC
I Alarm display
G
If an alarm occurs while the system is operating, the alarm display LED on the unit display will blink at 1-second
intervals (0.5 seconds ON, 0.5 seconds OFF) for the number of times that corresponds to the alarm code.
G
When facing the control PCB, the LED on the LD005 indicates the first digit, and the LED on the LD006
indicates the second digit.
For example, when alarm F10 occurs, the alarm code is 6A. Therefore, the LED for the first digit blinks 6 times,
then the LED for the second digit blinks 10 times.
Alarm
Probable cause
description
(Does not The power supply to the
–
operate.) indoor unit has failed.
Trouble with The intake temperature
the intake sensor connector is not
temperature correctly connected to the
sensor control PCB, or the sensor
has failed.
Failure of the The humidity sensor
air purification connector is not correctly
system connected to the control
EEPROM PCB, or the sensor has
failed.
Trouble with The electrolysis unit water
the electrolysis temperature sensor
unit water connector is not correctly
temperature connected to the control
sensor PCB, or the sensor has
failed.
Trouble with Writing to the EEPROM on
the humidity the control PCB is not
sensor possible.
Trouble with The DC fan motor connector
the DC fan is not correctly connected to
the control PCB, or the DC
fan motor has failed.
Abnormal There is no water in the
electrolysis electrolysis unit, due to
unit water trouble with the pump or
temperature water circuit.
Abnormal Because the electrolysis unit
conductivity connector has become
disconnected, the system
has judged that there is no
water in the electrolysis tank.
Abnormal An abnormal current value
electrolysis was detected during
current value electrolysis control.
Inspection location
/ method
Check that the power
breaker is ON.
Check that the intake
temperature sensor is
correctly connected to the
control PCB, and check that
there is no short circuit in the
sensor.
Check that the humidity
sensor is correctly connected
to the control PCB, and
check that there is no short
circuit in the sensor.
Check that the electrolysis
unit water temperature
sensor is correctly connected
to the control PCB, and
check that there is no short
circuit in the sensor.
Turn the power OFF and
back ON, and check whether
alarm F29 occurs again.
Check that the DC fan motor
is correctly connected to the
control PCB.
Check that the pump is
circulating water correctly,
check that the float switch is
functioning correctly, and
check that the water
temperature sensor is
installed correctly.
Check that the electrolysis
unit connector is correctly
connected to the control
PCB, and check that the
pump is sending water to the
electrolysis unit.
Check for displaced
electrodes inside the
electrolysis unit.
LD006
Alarm display LED
LD005
2 - 10
Using this System
Correction
Turn the breaker ON.
Connect the connector
correctly or replace the
sensor.
Connect the connector
correctly or replace the
sensor.
Connect the connector
correctly or replace the
sensor.
Replace the EEPROM.
Connect the connector
correctly or replace the DC
fan motor.
Replace the float sensor or
the pump, or install the
water temperature sensor
correctly so that it functions
correctly.
Connect the connector
correctly, replace the pump,
or replace the control PCB.
Check that no electrodes
are displaced inside the
electrolysis unit, replace the
electrolysis unit, or replace
the control PCB.
2