Protect/fault
Fault
display
Reason
Elimination methods
Inlet Temp. Sensor Fault
P01
The temp. Sensor is broken or
short circuit
Check or change the temp. Sensor
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 1 Temp. Sensor Fault
P05
The temp. Sensor is broken or
short circuit
Check or change the temp. Sensor
Coil 2 Temp. Sensor Fault
P15
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
Exhaust Air over Temp Prot.
P082 The compressor is overload
Check whether the system of the compressor running normally
Antifreeze Temp. Sensor
Fault
P09
Antifreeze temp sensor is broken or
short circuited
Check and replace this temp sensor
Pressure sensor Fault
PP
The pressure Sensor is broken
Check or change the or pressure
pressure 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
Waterway Anti-freezing Prot.
E05 Water temp. or ambient temp. is
too 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
Anti-freezing Prot.
E07 Water flow is not enough
Check the pipe water flow and whether water system is jammed or not
Winter Primary Anti-freezing
Protection.
E19 The ambient temp. Is low in winter
Winter Secondary Anti-
freezing Prot.
E29
The ambient temp. Is low in winter
Comp. Overcurrent Prot.
E051 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
Communication Fault
(speed control module)
E081 Speed control module and main
board communication failure
Check the communication connection
Low AT Protection
TP
Ambient temp is too low
EC fan feedback Fault
F051 There is something wrong with fan
motor and fan motor stops running
Check whether fan motor is broken or locked or not
Fan Motor 1 Fault
F031
1. Motor is in locked-rotor state
2.The wire connection between DC-
fan motor module and fan motor is
in bad contact
Change a new fan motor
Check the wire connection and make sure they are in good contact
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Содержание ALLPH120R410-INV
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