Balboa CLIM8ZONE II User And Service Manual page 14

5.5. Error Code table：
Error Error description
code
E03 Water flow failure
E04 winter anti-freezing
E05 High pressure protection
E09 Communication
the upper computer failed
（ Communication
Balboa system failed）
E10 Communication fault of
frequency conversion
module (alarm when
communication is
disconnected between
external board and drive
board)
description
1. The water flow switch fault
2. Low water flow
3. The inlet and outlet water are
reversed
4. There is air in the pipe
5. The pipe blocked
The ambient temperature is lower
than the antifreeze setting value
1. Low water flow
2.. Pressure switch fault
3. The fan motor unwork or the
speed too low
4.Overcharged the refrigerant
with
with
1. The mainboard or driver board
damaged
2. The connector of the
communication cable between the
mainboard and the driver board is
in poor contact or falls off
3. The communication cable is
Solution suggestion
1.Check the water flow switch
and replace it if it is faulty
2.Check the water valve and
the temperature difference
between inlet and outlet water
3.Whether the inlet and outlet
water pipes are correctly
connected
4.Emptying
5.Pipe cleaning
Normal protection
procedure
1. Check whether the
temperature difference
between inlet and outlet water
is too large, and whether the
outlet water temperature is too
high
2. Use a multimeter to check
whether the high voltage
protection switch works
3. Check the water flow of the
water pump and the speed of
the fan
4. Refill the refrigerant
1. Replace the main board
2. Check the communication
cables between the main board
and Balboa system
3. Check whether the Balboa
system software matches
1. Replace the main board or
driver board
2. Check the communication
cables between the main board
and driver board
3. Replace the communication
cable
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