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Troubleshooting and extra information
6.2Malfunction table
Protect/fault
Reason
Elimination methods
Fault
display
Standby
Non
Normal boot
Inlet Temp Sensor Fault
The temp. Sensor is broken
or short circuit
Check or change the temp. Sensor
P01
Outlet Temp Sensor Fault
The temp. Sensor is broken
or short circuit
Check or change the temp. Sensor
P02
Syst1:Coil temp1 Sensor
The temp. Sensor is broken
or short circuit
P153
Syst1:Coil temp2 Sensor
The ambient temp. Sensor is
broken or short circuit
P154
AT Sensor Fault
P04
Syst1:Suction temp Sensor
P17
Syst1:Antifreeze Sensor1(US)
P191
Syst1:Antifreeze Sensor2(US)
P193
Syst1:Antifreeze Sensor4(HSS)
P195
Syst1:Inlet Sensor(EVI)
P101
Syst1:Outlet Sensor(EVI)
P102
Syst1:Exhaust temp Sensor
P181
Syst1:Pressure Sensor fault
PP11
Water Tank Temp Sensor
P03
Syst2:Coil temp Sensor
P25
Syst2:Suction temp Sensor
P27
Syst2:Antifreeze Sensor1(US)
P291
Syst2:Antifreeze Sensor2(US)
P293
Syst2:Antifreeze Sensor1(HSS)
P292
Syst2:Antifreeze Sensor2(HSS)
P296
Syst2:Exhaust Temp Sensor
P281
Syst2:Pressure Sensor fault
PP21
Syst2:Inlet Sensor(EVI)
P201
Syst2:Outlet Sensor(EVI)
P202
Syst1:Exhaust Overtemp
P182
Syst2:Exhaust Overtemp
P282
Low AT Protection
TP
Non
Check or change the temp. Sensor
Check or change the temp. Sensor
Check or change the temp. Sensor
Check or change the temp. Sensor
The temp. Sensor is broken
or short circuit
The temp. Sensor is broken
or short circuit
The temp. Sensor is broken
or short circuit
Check or change the temp. Sensor
The temp. Sensor is broken
or short circuit
The temp. Sensor is broken
or short circuit
The temp. Sensor is broken
or short circuit
The temp. Sensor is broken
or short circuit
The temp. Sensor is broken
or short circuit
The temp. Sensor is broken
or short circuit
The system 1 pressure Sensor
is broken or short circuit
The temp. Sensor is broken
or short circuit
The temp. Sensor is broken
or short circuit
The temp. Sensor is broken
or short circuit
The temp. Sensor is broken
or short circuit
The temp. Sensor is broken
or short circuit
The temp. Sensor is broken
or short circuit
The temp. Sensor is broken
or short circuit
The temp. Sensor is broken
or short circuit
The temp. Sensor is broken
or short circuit
The temp. Sensor is broken
or short circuit
The temp. Sensor is broken
or short circuit
Check or change the temp. Sensor
Check or change the temp. Sensor
Check or change the temp. Sensor
Check or change the temp. Sensor
Check or change the temp. Sensor
Check or change the temp. Sensor
Check or change the pressure Sensor
or pressure
Check or change the temp. Sensor
Check or change the temp. Sensor
Check or change the temp. Sensor
Check or change the temp. Sensor
Check or change the temp. Sensor
Check or change the temp. Sensor
Check or change the temp. Sensor
Check or change the temp. Sensor
Check or change the temp. Sensor
Check or change the temp. Sensor
Check or change the temp. Sensor
The system 2 pressure Sensor
is broken or short circuit
Check or change the pressure Sensor
or pressure
The ambient temp. is low
Fan Motor1 Fault
Fan Motor2 Fault
F031
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. 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
1.Change a new fan motor
2.Check the wire connection and make sure
they are in good contact
Communication Fault
(speed control module)
E081
Speed control module and main
board communication fail
Check the communication connection
Can be judged according to the remote controller failure code and troubleshooting
Protect/fault
Reason
Elimination methods
Fault
display
Communication Fault
E08
Syst1:Comp Overcurrent
The compressor is overload
E101
Syst2:Comp Overcurrent
The compressor is overload
E201
Syst1: HP Protection
The high-preesure switch is
broken
E11
Syst2: HP Protection
Check the pressure switch and cold circuit
E21
Syst1: LP Protection
Check the pressure switch and cold circuit
E12
Syst2: LP Protection
Check the pressure switch and cold circuit
E22
Flow Switch Protection
No water/little water in water
system
Check the pipe water flow and water pump
E032
Aux Superheat Protection
The
protection
switch is broken
electric-heater
Check to see whether the electric heater
has been running under the temperature
over 150
℃
for a long time
E04
Check the wire connection between
remote wire controller and main board
Communicat ion failure between
wire controller and mainboard
The high-preesure switch is
broken
The high-preesure switch is
broken
The high-preesure switch is
broken
Prim Anti-freezing Prot
The ambient temp. is low
E19
Secondary Anti-freezing Prot
E29
Syst1:Antifreeze(US)
Use side water system temp. is low
1. Check the US water temp. or change
the temp. Sensor
2.Check the pipe water flow and whether
water system is jammed or not
1. Check the US water temp. or change
the temp. Sensor
2.Check the pipe water flow and whether
water system is jammed or not
1. Check the HSS water temp. or change
the temp. Sensor
2.Check the pipe water flow and whether
water system is jammed or not
1. Check the HSS water temp. or change
the temp. Sensor
2.Check the pipe water flow and whether
water system is jammed or not
E171
The ambient temp. is low
Syst2:Antifreeze(US)
E271
Syst1:Antifreeze(HSS)
E172
Syst2:Antifreeze(HSS)
E272
Use side water system temp. is low
Heat side water system temp. is
low
Heat side water system temp. is
low
Syst1:Exhaust Overtemp
E182
Syst2:Exhaust Overtemp
Check whether the system of the compressor
running normally
E282
Excess Water Temp Diff
Water flow is not enough
and low pressure difference
Check the pipe water flow and whether
water system is jammed or not
E06
The compressor is overload
The compressor is overload
Check whether the system of the compressor
running normally
Check whether the system of the compressor
running normally
Check whether the system of the compressor
running normally
Check the pressure switch and cold circuit
Troubleshooting and extra information
26