Norsup P31V/32 - Page 23

4. OPERATION AND USE
Sensor Fault
short circuit
Outlet Temp.
Sensor Fault
P02
The temp. Sensor is broken or
short circuit
Check or change the temp. Sensor
Ambient Temp.
Sensor Fault
P04
The temp. Sensor is broken or
short circuit
Check or change the temp. Sensor
Coil Temp.
Sensor Fault
P05
The temp. Sensor is broken or
short circuit
Check or change the temp. Sensor
Suction Temp.
Sensor Fault
P07
The temp. Sensor is broken or
short circuit
Check or change the temp. Sensor
Discharge Temp.
Sensor
Fault
P081
The temp. Sensor is broken or
short circuit
Check or change the temp. Sensor
High Pressure
Prot.
E01
The high-pressure switch is broken
Check the pressure switch and cold
circuit
Low Pressure
Prot.
E02
Low pressure1 protection
Check the pressure switch and cold
circuit
Flow Switch
Prot.
E03
No water/little water in water
system
Check the pipe water flow and
water pump
Anti-freezing
Prot.
E07
Water flow is not enough
Check the pipe water flow and
whether water system is jammed
or not
Primary
Anti-freezing
Prot.
E19
The ambient temp. Is low
Secondary
Anti-freezing
Prot.
E29
The ambient temp. Is low
Inlet and outlet
temp. too big
E06
Water flow is not enough
and low differential pressure
Check the pipe water flow and
whether water system is jammed
or not
Low temperature
protection
Non
The environment temp. is low
Comp.
Overcurrent Prot.
E051
The compressor is overload
Check whether the system of the
compressor running normally
Exhaust Air over
Temp Prot.
P082
The compressor is overload
Check whether the system of the
compressor running normally
Communication
Fault
E08
Communication failure between
wire controller and mainboard
Check the wire connection
between remote wire controller
and main board
Antifreeze
Temp. Sensor
Fault
P09
antifreeze temp sensor is broken or
short circuited
check and replace this temp sensor
Waterway
Anti-freezing
E05
water temp. or ambient temp. is
too low