Malfunction
Gas exhaust temperature
sensor failure
Controller failure
Converter failure
Communication failure
between controller and
converter board
Communication failure
between converter and
outdoor board
module board failure
between outdoor board and
module board
Module board failure
Direct main current's voltage
too high or too low
protection
Over current protection
Symbol of Defrosting, the
heating light is on
Error code
EE05
Defrosting is not good
Lack of gas
The throttling device is
jammed
Low water flow
EE06
Wire connection is not good
Controller failure
EE07
Converter board failure
EE08
Wire connection is not good
Controller failure
EE09
Wire connection between
communication
outdoor board is wrong
Outdoor board failure
EE10
Communication
broken
Outdoor board or module
board failure
EE11
The data is wrong or the
module board is broken
EE12
The pressure is too high or
too low
The inner communication
contactor is broken
EE13
Electric supply pressure is
too low, the heat pump is
overload
Defrosting
23
Reason
Defrosting by hand
Plus the gas
Change the throttling device
Check the water pump
Check or change the signal
wire
Restart the power supply or
change the controller
Restart the power supply or
change the converter board
Check or change the wire
connection
Restart the power supply or
change the controller
Rewiring
wire
and
Restart the power supply or
change the outdoor board
wire
is
Restart the power supply or
change the broken board
Restart the power supply or
change the broken board
Check the power supply
Change the contactor
Check the power supply
Check
temperature whether it is too
high
Solution
the
water