GRE HPGI50 - Page 75

73
Malfunction
Error
code
Reason
Solution
Compressor current
protection
EE07
1. The compressor current is too large
instantaneously
2. Wrong connection for compressor
phase sequence
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
1.Check if the power in the normal range
2. Check the compressor
3. Check the compressor phase
4. Check the phase sequence connection
5. Check the waterway system and
filtration pump
6. Check mains power input
Communication
failure between
controller and main
board
EE08
1. Signal wire is not well connected or
damaged
2. Controller failure
3. Driving failure
1. Stop the power supply and restart.
Re-connect the signal wire or replace a
new one
2. Check the controller or replace a new
one
3. Check the driving system or update it.
Communication
failure between Main
control board and
Driving board
EE09
1. Poor connection of communication
wire
2. PCB failure
3. The wire is damaged
1. Stop the power supply and restart.
2. Reconnect the communication wire or
replace a new one
3. Check the wirings according to the
electric diagram
4. Replace a new PCB
VDC voltage too high
protection
EE10
1. Line voltage is too high
2. Driver board is damaged.
1. Check whether the power supply is
normal
2. Change driver board or main board
IPM module
protection
EE11
1. Data mistake
2. Wrong compressor phase connection
3. Compressor liquid and oil
accumulation lead to the current
becomes larger
4.Poor heat dissipation of drive module
or high ambient temperature
5. Compressor or driver board damaged
1. Program error, turn off electricity
supply and restart after 3 minutes
2. Check compressor sequence
connection
3. Check the pressure of system by
pressure gauge
4. Check if the ambient and water
temperature is over high
5. If it is the refrigration system failure,
send it to the service center
6. Change driver board
VDC voltage too low
protection
EE12
1. Mother line voltage is too low
2. Driver board is damaged.
1. Check if the power supply is in the
normal range
2. Change driver board