hydro-s Inverter 12, User And Service Manual, Page: 26 / 182

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3. Compressor accumulations
of liquid and oil lead to the
current becomes larger
4. Compressor or driver board
damaged
5. The water flow is abnormal
6. Power fluctuations within a
short time
EE 08
Communication
failure between the
controller and the
main board
1. Poor signal wire connection
or damaged signal wire
2. Controller malfunction
1. Check and re-connect the signal wire
2. Change a new signal wire
3. Turn off electricity supply and restart
machine
4. Change a new controller
EE 09
Communication
failure between
Main board and
driver board
1. Poor connection of
communication wire
2. The wire is damaged
1. Check the wire connection
2. Change a new wire
EE 10
VDC voltage too
high protection
1. Mother line voltage is too
high
2. Driver board is damaged. 1. Check if the power is in the normal
range
2. Change driver board or main board
EE 11
IPM module
protection
1. Data mistake
2. Wrong compressor phase
connection
3. Compressor liquid and oil
accumulation
lead to the
current becomes larger
4. Compressor or driver board
damaged
1. Program error, turn off electricity
supply and restart after 3 minutes
2. Change driver board
3. Check
compressor sequence
connection
EE 12
VDC voltage too low
protection
1. Mother line voltage is too
low
2. Driver board is damaged. 1. Check if the power is in the normal
range
2. Change driver board
EE 13
Input current over
high protection.
1. The compressor current is
too large momentary
2. The water flow is abnormal
3. Power fluctuations within a
short time
4. Wrong PFC inductor 1. Check the compressor
2. Check the waterway system
3. Check if the power is in the normal
range
4. Check if the correct PFC inductor is
used
EE 14
IPM module
thermal circuit is
abnormal
1. Output abnormity of IPM
module thermal circuit
2. Fan motor is abnormal or
damaged
3. Fan blade is broken
1. Change a driver board
2. Check if the motor speed is too low or
fan motor damaged, change another one
3. Change another fan blade