Chigo CMV-50V9A-S, Service Manual

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temperature sensor fault
（
Including the
mid-point of tube
、
inspiratory gas
）
otherwise replace it;
2
、
Check whether the sensor wire is short circuit or open
circuit, and whether the plug is well contacted, whether
there is welding off or rosin joint on the electric control
board, repair it if there is any above;
3
、
When the 1 and 2 are both normal, then the component
or integrated circuit is damaged, the electric control board
should be replaced.
F9 Exhaust gas sensor failure
1
、
Check whether the resistance of sensor is normal,
otherwise replace it;
2
、
Check whether the sensor wire is short circuit or open
circuit, and whether the plug is well contacted, whether
there is welding off or rosin joint on the electric control
board, repair it if there is any above;
3
、
When the 1 and 2 are both normal, then the component
or integrated circuit is damaged, the electric control board
should be replaced.
FA
The communication fault
between
the wire
controller and the indoor
PCB
1
、 check whether the wire controller’s connecting wire is
short circuit or loose, please make it connect well;
2
、
Check the connecting line
、
wire controller
、
PCB
whether they are loose or have a bad contact. Please
make them have a good contact.
FC
outdoor unit driving fault,
starting compressor
failure
1
、
Turn on the power again, and then check whether the
operation of the compressor is normal;
2
、
Check whether the connection of the compressor is
correct or reliable, otherwise repair it;
3
、
Check whether the components on the electric control
board have been damaged, if they are damaged, the
components or the electric control board should be
replaced.;
4
、
Check whether the connecting wires are disentwined
between the Intelligent Power Module board and the main
board, otherwise make the wires connect firmly .
FF
The outdoor DC motor
fault
1
、
Check the resistance value of the DC motor port. If it is
short circuit, please change the DC motor;
2
、
Check the voltage value of the DC motor port
VCC(15Vdc)
、
Vdm(340Vdc),please change the PCB board
if the voltage values are abnormal;
3
、
if all the voltage values of the DC motor port are
normal
，
the Vsp voltage
（
0~5v
）
is also ok ,it shows that the
inner PCB board of the DC motor is damaged, then change
the DC motor.
FH
The
indoor unit
EEPROM error
1
、
Check whether there are false weld and bad contact etc
between the EEPROM chip block and the electronic
control board ;
2
、
Check whether the EEPROM chip pin is broken foot
and the direction of installation is in line with the
EEPROM block;
3
、
When the procedure of EEPROM chip and itself have
fault it will appear the code FH. That is the need to replace
the EEPROM chip.
dF Defrosting state The unit is in defrosting state
，
that is normal.
dI Mode conflict
When the running mode for No.1 indoor unit is different
from No.2 indoor unit, the dF is displayed.