1. Malfunction Indicating Table. Determine and solve the malfuction by
malfuction code as below:
22
22
E 01
E 02
E 03
E 04
E 05
E 06
E 07
E 08
E 09
E 23
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
V
Maintenance and repair
Display
Mode
Malfunction and
Protection Name
Reason
Solution
Motherboard
travel light
Off
on
1 flashes 1 off
2 flashes 1 off
3 flashes 1 off
4 flashes 1 off
5 flashes 1 off
6 flashes 1 off
7 flashes 1 off
8 flashes 1 off
9 flashes 1 off
off
10 flashes 1 off
11 flashes 1 off
12 flashes 1 off
13 flashes 1 off
14 flashes 1 off
15 flashes 1 off
16 flashes 1 off
17 flashes 1 off
18 flashes 1 off
19 flashes 1 off
20 flashes 1 off
21 flashes 1 off
22 flashes 1 off
23 flashes 1 off
keep flashing
cooling/heating inlet water
temp. Sensor failure
cooling/heating outlet water
temp. Sensor failure
System 1 coil temp sensor failure
(heat source side inlet temp
sensor failure)
System 2 coil temp sensor failure
(heat source side outlet temp
sensor failure)
hot water inlet water
temp. Sensor failure
tank bottem temp. Sensor
failure
ambient temp. sensor
failure
solar tank temp. sensor
failure
Use side water flow
switch failure
Heat source side water
flow switch failure
Hot water side water
flow switch failure
System 1 high pressure
protection
System 1 low pressure
protection
System 2 high pressure
protection
System 2 low pressure
protection
Use side Frost-protection
Heat source
Frost-protection
Hot water
Frost-protection in winter
Use side
Frost-protection in winter
Heat source side
Frost-protection in winter
Defrost
communication failure
normal start
Standby
1.Check whether the connection of ambient temperature contact is poor.
2.Check or change the ambient temperature sensor.
1.Check whether the connection of water tank sensor is poor.
2.Check or change the water tank sensor.
1.Check whether the connection of water tank sensor is poor.
2.Check or change the water tank sensor.
1.Check whether the connection of
temperature contact is poor.
2.Check or change the
temperature sensor.
solar tank
solar tank
tank top temp. sensor
failure
1.Automatic defrost, after finishing the work restored to the
original state of antifreeze.
1.Automatic defrost, after finishing the work restored to the
original state of antifreeze.
1.Automatic defrost, after finishing the work restored to the
original state of antifreeze.
No water/little water
in water system.
No water/little water
in water system.
No water/little water
in water system.
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 use side flow switch is normal.
2.Check whether the use side water system is normal/jam.
High pressure 1
switch protection
Low pressure 1
switch protection
Power supply phase
failure /lacking
check the whether it 's power supply phase failure /lacking or not,
if phase failure ,please the exchange the position of
Phase failure protection
High pressure 2
switch protection
Low pressure 2
switch protection
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 connection of sensor is poor.
2.Check or change the water tank sensor.
1.Check whether the connection of coil sensor is poor.
2.Check or change the water tank sensor.
1.Check whether the connection of coil sensor is poor.
2.Check or change the water tank sensor.
1.Check whether the connection of sensor is poor.
2.Check or change the water tank sensor.
1.Check whether the connection of sensor is poor.
2.Check or change the water tank sensor.
Outdoor temperature is low,
heat pump stopped working.
Outdoor air temperature is lower than the heat pump operating temperature settings, heat
pump stopped working. Outdoor air temperature is higher than the heat pump operating
temperature settings, heat pump allowed to work.
The unit operation process
piping temperature too low
The unit operation process
piping temperature too low
Standby unit under low
temperature of pipeline
Standby unit under low
temperature of pipeline
Standby unit under low
temperature of pipeline
1.Automatic defrost, after finishing the work restored to the
original state of antifreeze.
1.Automatic defrost, after finishing the work restored to the
original state of antifreeze.
1.Check whether the heat source side flow switch is normal.
2.Check whether the heat source side water system is normal/jam.
1.Check whether the hor water side flow switch is normal.
2.Check whether the hot water side water system is normal/jam.
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.
3.check whether refrigerant leak.
1.check whether the low pressure switch is normal.
3.check whether refrigerant leak.
Multi-Function Water To Water Heat Pump
MACON
