T: 0191 516 6554
20
Thermal fuse is damaged
•
Thermal fuse is cut off by abnormal
overheating of internal electric
heater
•
Mechanical fault at thermal fuse
•
Wire is damaged
•
This error
will
not be happened if
temperature of electric heater tank is
below 80
°C
Display
code
Title
Cause of error
Check point & Normal condition
21
DC PEAK
(1PM Fault)
•
Instant over current
•
Over Rated current
•
Poor insulation of 1PM
•
An instant over current in the U,V,W
phase
-
Comp lock
-
The abnormal connection of U,V,W
•
Over load condition
-
Overcharging of
refrigerant Pipe
length. Outdoor
Fan is stop
•
Poor insulation of compressor
22
Max
.
C(T
Input Over Current
1.
Malfunction of Compressor
2.
Blocking of Pipe
3.
Low
Voltage
Input
4.
Refrigerant, Pipe length, Blocked
...
23
DC Link High/ Low
Volt
•
DC Link
Voltage
is above 420
V
DC
•
DC Link
Voltage
is below 140
V
DC
•
Check CN_(L), CN_(N) Connection
•
Check Input
Voltage
•
Check PCB DC Link
voltage
sensor parts
24
Low/High Pressure Switch Perception Error
•
Low pressure is below 0.2 kgf/cm
2
.
•
High pressure is above 42~44
kgf
/cm
2
.
•
Pressure switch is self-defective.
•
Check the low/high pressure
•
Check the connection of harness
26
DC Compressor Position
•
Compressor Starting fail error
•
Check the connection of comp
wire
"U,V,W"
•
Malfunction of compressor
•
Check the component of "I PM",
detection parts
.
27
AC Input Instant over Current Error
PCB(lnverter) input current is over 100
A(peak) for 2 us
1.
Overload operation (Pipe
clogging/Covering/EEV
defect/Ref. overcharge)
2.
Compressor damage
(Insulation damage/Motor
damage)
3.
Input voltage abnormal (L,N)
4.
Power line assemble condition
abnormal
5.
PCB assembly 1 Damage (input current
sensing part)
29
Inverter compressor over current
(HM**1M U*3) Inverter Compressor
input current is 35 Apk.
(HM**3M U*3) Inverter Compressor
input current is 35 Apk.
1.
Overload operation (Pipe
clogging/Covering/EEV
defect/Ref. overcharge)
2.
Compressor damage(lnsulation
damage/Motor damage)
3.
Input voltage low
4.
ODU PCB assembly 1 damage
