Multi-Function Air To Water Heat Pump
2.Malfunction Indicating Table. Determine and solve the malfunction by
malfunction code as below:
Malfunction and
Protection Name
Reason
Solution
Display
Mode
Cooling/heating inlet water
temp. Sensor failure
Cooling/heating outlet water
temp. Sensor failure
System1coil temp.
Sensor failure
System 2 coil temp.
Sensor failure
Ambient temp. sensor
failure
Solar collector sensor
failure
1.Check whether the connection of sensor is poor.
2.Check or change the solar collector sensor.
1.Check whether the connection of sensor is poor.
2.Check or change the ambient sensor.
1.Check whether the connection of sensor is poor.
2.Check or change the system 2 coil sensor.
1.Check whether the connection of sensor is poor.
2.Check or change the
sensor.
system 1 discharge
The sensor is open
or short circuit
The sensor is open
or short circuit
The sensor is open
or short circuit
The sensor is open
or short circuit
The sensor is open
or short circuit
The sensor is open
or short circuit
The sensor is open
or short circuit
The sensor is open
or short circuit
The sensor is open
or short circuit
1.Check whether the connection of sensor is poor.
2.Check or change the system 1 coil sensor.
1.Check whether the connection of sensor is poor.
2.Check or change the hot water outlet sensor.
1.Check whether the connection of sensor is poor.
2.Check or change the hot water tank sensor.
1.Check whether the connection of sensor is poor.
2.Check or change the air condition outlet sensor.
1.Check whether the connection of sensor is poor.
2.Check or change the air condition inlet sensor.
Hot water tank temp.
Sensor failure
Hot water outlet temp.
Sensor failure
System 1 discharge temp.
Sensor failure
E
00
E
01
E
02
E
03
E
05
E
06
E
07
E
08
E
09
E 10
System 2 discharge temp.
Sensor failure
The sensor is open
or short circuit
1.Check whether the connection of sensor is poor.
2.Check or change the system 2 discharge sensor.
System 2 high pressure
protection
Hot water side water flow
switch failure protection
Air condition side antifreezing
protection in winter
Air condition side frost
protection
System 1 discharge temp
too high protection
Hot water side antifreezing
protection in winter
Auxiliary electric overheating
protection(hot water side)
No water/little water
in water system.
System 1 low pressure
protection.
The unit is not
running well.
System 1 high pressure
protection.
1.Check whether the hor water side flow switch is normal.
2.Check whether the hot water side water system is normal.
System 2 low pressure
protection.
Air condition side water flow
switch failure protection
System 2 discharge temp
too high protection
Auxiliary electric overheating
protection(air condition side)
Phase sequence protection
P00
P 01
P 02
P 03
P 04
P 05
P 06
P 07
P 08
P 09
P 10
P 11
P 12
P 13
P15
Ambient temperature too low
protection
System 1 high pressure
switch is opened
System 1 low pressure
switch is opened
System 2 high pressure
switch is opened
System 2 low pressure
switch is opened
No water/little water
in water system.
Air condition side water
outlet temp. too low
System 1 is not
running well.
System 2 is not
running well.
Ambient temp.
too low.
Overheating protection
switch is open.
Overheating protection
switch is open.
Power supply phase
failure /lacking
Ambient temp.is too
low
1.Check whether the high pressure switch is normal.
2.Check whether the water tank temperature setting is too high.
3.Check whether the refrigerant is over capacity.
1.Check whether the low pressure switch is normal.
2.Check whether refrigerant leak.
1.Check whether the high pressure switch is normal.
2.Check whether the water tank temperature setting is too high.
3.Check whether the refrigerant is over capacity.
1.Check whether the low pressure switch is normal.
2.Check whether refrigerant leak.
1.Check whether the air condition side flow switch is normal.
2.Check whether the air condition side water system is normal.
Check the whether it 's power supply phase failure /lacking or not,
if phase failure ,please exchange the position of phase ,and
power up again.
1.Check whether the hor water side flow switch is normal.
2.Check whether the hot water side water system is normal.
1.Check whether the water tank temperature setting is too high.
2.Check whether the system 1 refrigerant is over capacity.
1.Check whether the water tank temperature setting is too high.
2.Check whether the system 2 refrigerant is over capacity.
1.Check whether the air condition side flow switch is normal.
2.Check whether the air condition side water system is normal.
Defrost
With automatic antifreezing funtion to avoid the unit freezing off.
With automatic antifreezing funtion to avoid the unit freezing off.
With automatic antifreezing funtion to avoid the unit freezing off.
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