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10. CODES AND ALARMS ON PCB DISPLAY
1. DESCRIZIONE DEI COMPONENTI
Error Code
Description
Motor error
C1
fan
upper
Sensor error
C2
external tempera-
ture
Motor error
fan
EH0618DC
EH1018DC
C3
Motor error
lower fan
EH1218DC
EH1618DC
EH1718D3
Temperature rise
C4
(above 110°C)
of the MAIN PCB
Sensor error
C5
MAIN PCB
C6
MAIN PCB Error
TERMINAL BLOCK
C7
PCB Serial Error
MAIN PCB Error
EH0618DC
EH1018DC
EH1218DC
C8
EH1618DC
PCB Error
INVERTER
EH1718D3
Unit
Interested party
EH1218DC
FUSE CF7
EH1618DC
(250V T3.15A)
FUSE CF6
EH1718D3
(250V T3.15A)
EH1218DC
FAN MOTOR
EH1618DC
MAIN PCB
EH1718D3
EXTERNAL TEMP.
SENSOR
FAN MOTOR
MAIN PCB
FUSE CF6
EH1218DC
EH1218DC: 250V T3.15A
EH1618DC
EH1618DC: 250V T3.15A
FUSE CF7
EH1018DC
EH1018DC: 250V T3.15A
EH1718D3
EH1718D3: 250V T3.15A
Incorrect INSTALLATION
TEMP. SENSOR
MAIN PCB
TEMP. SENSOR
MAIN PCB
MAIN PCB
Incorrect connection
MAIN PCB - TERMINAL
BLOCK PCB
Ground cable
TERMINAL BLOCK PCB
MAIN PCB
EH0618DC
EH1018DC
MAIN PCB
EH1218DC
EH1618DC
Incorrect connection
MAIN PCB - INVERTER
PCB
EH1718D3
INVERTER PCB
MAIN PCB
Verification method
Troubleshooting
Check the electrical
If
fuse
continuity of the CF7
EH1718D3)
FUSE with a tester
place FAN MOTOR and fuse.
[fig. 2].
If fuse CF7 (CF6 for EH1718D3)
Check the electrical
has not blown, check the
continuity of the CF6
FAN MOTOR voltage [fig. 2].
FUSE with a tester
If the voltage is normal, replace
[fig. 2].
the FAN MOTOR. If the voltage is
Check the FAN MOTOR
abnormal, replace the MAIN PCB
voltage [fig. 2].
board.
Check the resistance
Replace sensor if faulty.
with a tester [tables].
Check the FAN MOTOR
If the fuse CF6, CF7 has blown,
voltage [fig. 2].
replace the FAN MOTOR and
Check the electrical
fuse. If the fuse CF6, CF7 has not
continuity of the CF6
blown, check the FAN MOTOR
FUSE with
voltage [fig 2]. If the voltage is
a tester [fig. 2].
normal, replace the FAN MO-
Check the electrical
TOR. If the voltage is abnormal,
continuity of the CF7
replace the MAIN PCB board.
FUSE with
a tester [fig. 2].
Check the INSTALLA-
Correct the INSTALLATION posi-
TION site (air intake
tion to avoid obstruction of the
and outlet obstruction).
air intake and outlet ducts.
-------
Replace the MAIN PCB
-------
Replace the MAIN PCB.
-------
Replace the MAIN PCB.
Once the wiring error has been
Check the connection.
corrected, restart the device.
Check the correct INSTALLATION
-------
of the ground wire.
Anomaly differs from
Replace the TERMINAL BLOCK
the cases described
PCB.
above.
Anomaly differs from
the cases described
Replace the MAIN PCB.
above.
Turn off
power, wait
for about 3 minutes,
If the same error code reappears,
then turn it back on
replace the MAIN PCB.
Check loose connec-
tions and contacts with
reactors.
Check
Once the wiring error has been
the connection.
corrected, restart the device.
Anomaly differs
from the cases de-
Replace the INVERTER PCB
scribed above.
Anomaly differs from
the cases described
Replace the MAIN PCB.
above.
EN
EN
CF7
(CF6
for
has
blown,
re-
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