Hydro-Pro Inverter 07, User And Service Manual

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7.2 Error code display on LED wire controller
Malfunction Error code Reason Solution
Overheating in heating
mode EE04 Low or No water flow Failure of water pump
Water pipe jammed
Failure of water flow switch
Gas exhaust temperature
sensor failure EE05 Defrosting is not good
Lack of gas
The throttling device is
jammed
Low water flow Defrosting by hand
Plus the gas
Change the throttling device
Check the water pump
Controller failure EE06 Wire connection is not
good
Controller failure Check or change the signal
wire
Restart the power supply or
change the controller
Converter failure EE07 Converter board failure Restart the power supply or
change the converter board
Communication failure
between controller and
converter board EE08 Wire connection is not
good
Controller failure Check or change the wire
connection
Restart the power supply or
change the controller
Communication failure
between converter and
outdoor board EE09 Wire connection between
communication wire and
outdoor board is wrong
Outdoor board failure Rewiring
Restart the power supply or
change the outdoor board
module board failure
between outdoor board
and module board EE10 Communication wire is
broken
Outdoor board or module
board failure
Restart the power supply or
change the broken board
Module board failure EE11 The data is wrong or the
module board is broken Restart the power supply or
change the broken board
Direct main current’s
voltage too high or too
low protection EE12 The pressure is too high or
too low
The inner communication
contactor is broken Check the power supply
Change the contactor
Over current protection EE13 Electric supply pressure is
too low, the heat pump is
overload Check the power supply
Check the water
temperature whether it is
too high
Symbol of Defrosting, the
heating light is on Defrosting