HTW VAW Manuel De L'utilisateur Et D'installation page 79

temp. sensor
failure
P6
Solar temp.
sensor failure
EC
Emergency
switch off
E1
High
pressure
protection
(HP Switch)
E2
Low pressure
protection
(LP Switch)
●
circuit
(5 flashes 1 2) The sensor short
dark) circuit
3) PCB board failure
1) The sensor open
☆ ☆ ☆ ☆ ☆
circuit
☆ ☆ ☆ ☆ ☆
2) The sensor short
(10
●
circuit
flash1dark)
3) PCB board failure
only show
the 1) Connecting wire off
protection 2) PCB board failure
code
1) Too high air inlet
temp
2) Less water in the
tank
3) The electronic
expansion valve
☆☆☆☆☆
assembly blocked
☆●
4) Too much refrigerant
(6 flashes 1
dark) 5)
damaged
6) The uncompressed
gas is in refrigerant
system
7) PCB board failure
1) Too low air inlet
temp
2) The
expansion
assembly blocked
☆☆☆☆☆
3) Too less refrigerant
☆☆●
(7 flashes 4) The
1 dark) damaged
5) The fan assembly
can not work
6 PCB board failure
connection
2) Replace the sensor
3) change the PCB board
1) Check the sensor
connection
2) Replace the sensor
3) change the PCB board
1) According to the physical
truth judging whether is
normal or not
2) change the PCB board
1) Check if the air inlet temp
is over the working limited
2) Check if the tank is full of
water. If not, charge water
3) Replace the electronic
expansion valve assembly
4)
refrigerant
The switch 5) Replace a new switch
6)
recharge the refrigerant
7)
1) Check if the air inlet temp
is over the working limited
electronic 2) Replace the electronic
valve expansion valve assembly
3) Charge some refrigerant
4) Replace a new switch
5) Check if the fan working
switch
when the compressor
working. If not, some
problems with the fan
assembly
6) change the PCB board
76
Discharge some
Discharge and then
change the PCB board