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AR-BC320 TROUBLESHOOTING 11 - 19
Main
code
Sub
code
Title
Thermistor open (HL1)
H2
00
Display
Lamp/Message
Phenomenon Detail
Thermistor open
Section
Fusing
Case 1
Cause
Disconnection of the fusing
section connector
Check &
Remedy
Check the connector and
the harness between the
thermistor and the control
PWB.
Case 2
Cause
The fusing unit is not
installed.
Check &
Remedy
Install the fusing unit.
Case 3
Cause
Thermistor trouble, control
PWB trouble, AC power
supply trouble
Check &
Remedy
Replace the thermistor or
the control PWB. Check
the AC power supply.
Main
code
Sub
code
Title
Thermistor open (HL2)
H2
01
Display
Lamp/Message
Phenomenon Detail
Thermistor open
Section
Fusing
Case 1
Cause
Disconnection of the fusing
section connector
Check &
Remedy
Check the connector and
the harness between the
thermistor and the control
PWB.
Case 2
Cause
The fusing unit is not
installed.
Check &
Remedy
Install the fusing unit.
Case 3
Cause
Thermistor trouble, control
PWB trouble, AC power
supply trouble
Check &
Remedy
Replace the thermistor or
the control PWB. Check
the AC power supply.
Main
code
Sub
code
Title
Fusing section high temperature
trouble (THS1)
H3
00
Display
Lamp/Message
Phenomenon Detail
The fusing temperature
exceeds 230°C.
Section
Fusing
Common
Check
Use SIM 5-2 to check the
heater lamp flashing
operation.
Case 1
Cause
The heater lamp flashes
properly with SIM 5-2.
Thermistor trouble,
disconnection of the fusing
section connector
Check &
Remedy
Check the thermistor and
its harness. Cancel the
error with SIM 14.
H3
00
Case 2
Cause
The heater lamp keeps ON
with SIM 5-2.
Control PWB trouble, AC
power supply trouble
Check &
Remedy
Check the AC PWB and
the control PWB lamp
control circuit.
Cancel the error with SIM
14.
Main
code
Sub
code
Title
Fusing section high temperature
trouble (THS2)
H3
01
Display
Lamp/Message
Phenomenon Detail
The fusing temperature
exceeds 230°C.
Section
Fusing
Common
Check
Use SIM 5-2 to check the
heater lamp flashing
operation.
Case 1
Cause
The heater lamp flashes
properly with SIM 5-2.
Thermistor trouble,
disconnection of the fusing
section connector
Check &
Remedy
Check the thermistor and
its harness. Cancel the
error with SIM 14.
Case 2
Cause
The heater lamp keeps ON
with SIM 5-2. AC power
supply trouble, control
PWB trouble
Check &
Remedy
Check the AC PWB and
the control PWB lamp
control circuit.
Cancel the error with SIM
14.
Main
code
Sub
code
Title
Fusing section low temperature
trouble (HL1)
H4
00
Display
Lamp/Message
Phenomenon Detail
The fusing temperature is
not reached within the
specified time after turning
on the power relay.
Section
Fusing
Common
Check
Use SIM 5-2 to check the
heater lamp flashing
operation.
Case 1
Cause
The heater lamp flashes
properly with SIM 5-2.
Thermistor trouble, PCU
PWB (thermistor input
circuit) trouble
Check &
Remedy
Check the thermistor and
its harness. Check the
PCU PWB thermistor input
circuit.
Cancel the error with SIM
14.
Main
code
Sub
code
Title
Fusing section high temperature
trouble (THS1)
Summary of Contents for AR-BC320
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