service manual for tas 09, 12ehu

service manual for tas 09, 12ehu
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TAS-09EHU&TAS-09EHU/O,TAS-12EHU&TAS-12EHU/O
TAS-18EHU&TAS-18EHU/O,TAS-24EHU&TAS-24EHU/O
failure code manual
DC inverter single split series
LED
running lamp timer lamp
(flicker times) (flicker times)
failure
The reason of fault and solution
1 、Check whether the connection of the outdoor unit and
indoor unit is one to one, otherwise connect the L, N
and communication line of the indoor unit and outdoor
unit one to one.
2、 Measure whether the voltage between the zero line and
the communication line is 18V-30AC half-wave signal,
F1
1
Light
check whether the communication circuit on the indoor
communication fault
and outdoor electric control board has been damaged,
otherwise replace it.
3、 Check whether the LED on the outdoor power board
has been on, otherwise replace the electric control
board.
4、 Check whether the unit is abnormal caused by the
external interference, if it is, then find the interfering
.
source, and removes it.
1、 Check whether the resistance of sensor is normal,
otherwise replace it.
F2
2
Light
ambient temp.
2、 Check whether the sensor wire is short circuit or open
circuit, and whether the plug is well contacted, whether
sensor fault
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 components
or integrated circuit is damaged, the electric control
board should be replaced.
1、 Check whether the resistance of sensor is normal,
otherwise replace it.
F3
3
Light
coil pipe temp.
sensor of indoor
unit fault (inlet,
Middle, outlet)
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 components
or integrated circuit is damaged, the electric control
board should be replaced.
1、 Check whether the contact of the plug of the motor wire
and socket is well, making sure well contact.
F4
4
Light
fan motor of indoor
unit fault
2、 Check whether the indoor motor has damaged, the
motor should be replaced when it is damaged.
3、 Check whether the controllable silicon and other
components on the electric control board have
damaged, replace the controllable silicon or electric
control board when they are damaged.
1
1、 Check whether the connection of the compressor is
F5
5
Light
module of outdoor
unit fault
reliable, otherwise connect firmly again.
2、 Check whether the fixation between the IPM module
and the radiator is firm.
3、 Check if the compressor is well, otherwise replace it.
4、 Check whether the IPM module is abnormal, otherwise
replace it.
1、 Check whether the resistance of sensor is normal,
otherwise replace it.
F6
6
Light
ambient temp.
sensor
of outdoor fault
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 components
or integrated circuit is damaged, the electric control
board should be replaced.
1、 Check whether the resistance of sensor is normal,
otherwise replace it.
2、 Check whether the sensor wire is short circuit or open
F7
7
Light
coil pipe temp.
sensor of outdoor
unit fault
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 components
or integrated circuit is damaged, the electric control
board should be replaced.
1、 Check whether the resistance of sensor is normal,
otherwise replace it.
2、 Check whether the sensor wire is short circuit or open
F8
8
Light
suction temp.
sensor of
compressor fault
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 components
or integrated circuit is damaged, the electric control
board should be replaced.
1、 Check whether the resistance of sensor is normal,
otherwise replace it.
F9
9
Light
discharge temp.
sensor of
compressor fault
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 components
or integrated circuit is damaged, the electric control
board should be replaced.
2
inductor of
FA
10
Light
current or voltage
Check whether inductor of current or voltage have been
damaged, they should be replaced if they are fault.
fault
1、 Power on again, and check the operation of the
compressor is normal.
2、 Check whether the connection of the compressor is
FC
11
Light
reliable, otherwise repair.
compressor drive
fault
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.
phase lacking or
FD
12
Light
phase sequence
Check power wire voltage or change two power wires.
fault
1、 Check whether the resistance of sensor is normal,
otherwise replace it.
Check whether the sensor wire is short circuit or open
FE
13
Light
gas return sensor
2、 circuit, and whether the plug is well contacted, whether
there is welding off or rosin joint on the electric control
fault(include
board, repair it if there is any above.
A,B,C,D)
3、 When the 1 and 2 are both normal, then the components
or integrated circuit is damaged, the electric control
board should be replaced.
1、DC motor fault
FF
14
Light
other fault
2、NO refrigerant
3、Other fault
1、Check whether the filter of indoor unit is too dirty, and
it should be cleaned when it is too dirty.
P1
1
Light
temp. of evaporator
protection
2、Check whether it has barrier around indoor unit,
it should be remove if it has.
3、Check whether the indoor motor is damaged, it should
be replaced motor or electrical control board when it is
damaged.
1、 Check whether the fixation between the IPM module
overheat, over
P2
2
Light
current protection
of inverter module
and the radiator is firm.
2、 Check whether the compressor is well, otherwise
replace it.
3、 Check whether the IPM module is abnormal, otherwise
replace it.
1、 Check whether the ambient temperature exceeds the
P3
3
Light
operation range for the air conditioner
over current
protection
2、 Check whether the current detection circuit is
abnormal, the electric control should be replaced when
it is abnormal.
3
1、 Check whether the air condition system and pressure
P4
4
Light
discharge temp. of
are normal.
compressor
2、 Check whether the sensor, connecting wire of the
protection
sensor and the detection circuit are abnormal.
1、 Check whether the air condition system and pressure
P5
5
over heat of
Light
are normal.
compressor top
2、 Check whether the sensor, connecting wire of the
protection
sensor and the detection circuit are abnormal.
Check whether the air condition system and pressure
P6
6
suction temp. of
Light
1、 are normal.
compressor
2、 Check whether the sensor, connecting wire of the
protection
sensor and the detection circuit are abnormal.
1、 Check whether the supply voltage is out of rang from
low
P7
7
Light
or high voltage
protection
150 to 270V
2、 Check the voltage detection circuit of the IPM base
board is abnormal, if it is abnormal, the IPM base board
or the electric control board should be replaced.
P8
8
Light
low presser of gas
return protection
1、 Check whether the pressure is normal when the unit is
running, if it is abnormal, should detect the leakage and
welding、 add refrigerant.
P9
9
high pressure of
Light
discharge protection
1、 Check whether the pressure is normal when the unit is
running, if it is abnormal, should detect the leakage and
welding、 add refrigerant.
1、Check whether the condenser of outdoor unit is too dirty,
high temp. of
PA
10
Light
condenser
protection
and it should be cleaned when it is too dirty.
2、Check whether it is running at bad condition long
time.
3、Check whether senor and wire are normal.
high temp. of
PC
11
Light
outdoor ambient
protection
PF
12
Light
1、Check the outdoor ambient temperature is too high or
there is heat source around the outdoor unit.
2、 Check whether the sensor and sensor wire are normal.
other protection
4
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