14
EvoHeat CS-i Commercial Inverter Series Heat Pump
6.1 Error Codes
Electronic Control Fault Table
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 pressure Sensor
or pressure
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
Primary Anti-freezing Prot.
E19
The ambient temp. Is low
Secondary Anti-freezing Prot.
E29
The ambient temp. Is low
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 fail
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 Motor1 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
1. Change a new fan motor
2. Check the wire connection and
make sure they are in good contact
Fan Motor2 Fault
F032
1. Motor is in locked-rotor state
2. The wire connection between DC-fan
motor module and fan motor is in bad
contact
1. Change a new fan motor
2. Check the wire connection and
make sure they are in good contact
