24
temp. sensor
failure
●
(5 flashes 1
dark)
circuit
2) The sensor short
circuit
3) PCB board failure
connection
2) Replace the sensor
3) change the PCB board
Solar temp.
sensor failure
P6
☆ ☆ ☆ ☆ ☆
☆ ☆ ☆ ☆ ☆
●
(10
flash1dark)
1) The sensor open
circuit
2) The sensor short
circuit
3) PCB board failure
1) Check the sensor
connection
2) Replace the sensor
3) change the PCB board
Emergency
switch off
EC
only show
the
protection
code
1) Connecting wire off
2) PCB board failure
1) According to the physical
truth judging whether is
normal or not
2) change the PCB board
High
pressure
protection
(HP Switch)
E1
☆☆☆☆☆
☆
●
(6 flashes 1
dark)
1) Too high air inlet
temp
2) Less water in the
tank
3)
The
electronic
expansion
valve
assembly blocked
4) Too much refrigerant
5)
The
switch
damaged
6) The uncompressed
gas is in refrigerant
system
7) PCB board failure
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)
Discharge
some
refrigerant
5) Replace a new switch
6) Discharge and then
recharge the refrigerant
7) change the PCB board
Low pressure
protection
(LP Switch)
E2
☆☆☆☆☆
☆☆
●
(7 flashes 1
dark)
1) Too low air inlet
temp
2)
The
electronic
expansion
valve
assembly blocked
3) Too less refrigerant
4)
The
switch
damaged
5) The fan assembly
can not work
6 PCB board failure
1) Check if the air inlet temp
is over the working limited
2) Replace the electronic
expansion valve assembly
3) Charge some refrigerant
4) Replace a new switch
5) Check if the fan working
when
the
compressor
working.
If
not,
some
problems
with
the
fan
assembly
6) change the PCB board
