Hydro-Pro 5, User And Service Manual

Page: 60 / 119

59
EE 12
VDC voltage too low
protection
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 refrigerant system failure,
send it to the service center
6. Change driver board
EE 13
Input current over
high protection.
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
EE 14
IPM module thermal
circuit is abnormal
1. The compressor current is too large
momentary
2. The water flow is abnormal
3. Power fluctuations within a short
time
4. Wrong reactor
1. Check the compressor if it works
normally
2. Check the waterway system
3. Check if the power is in the normal
range
4. Check if the reactor is used correctly.
EE 15
IPM module
temperature too
high protection
1. Output abnormity of IPM module
thermal circuit
2. Fan motor is abnormal or damaged
3. Fan blade is broken
1. Check if the motor speed is too low or
fan motor is damaged, replace it by a
new one.
2. Replace a new driver board
3. Change the fan blade if it is broken
EE 16
PFC module
protection
1. Output exception of IPM module
thermal circuit
2. Fan motor is abnormal or damaged
3. Fan blade is broken
4.The screw on driver board is loose
1. Check the main board or replace the
driver board
2. Check if the motor speed is too low or
fan motor is damaged, replace it by a
new one if any failure.
3. Change the fan blade if it is broken
4. Check the screw on driver board
EE 17 DC fan motor failure
1. DC motor is damaged
2. For the tri ‐ phase check if the neutral
is connected
3. Main board is damaged
4. The fan blade is stuck
1. Detect DC motor for mono phase
machine, replace a new one if any
failure
2. Check the wiring connection for
tri ‐ phase machine
3. Check the board, replace a new driver
board or main board if any failure
4. Check if there is any barrier in front of
fan blade and remove it
EE 18
PFC module thermal
circuit is abnormal
The driver board is damaged
1. Check if the motor speed is too low or
fan motor is damaged, replace it by a
new one.
2. Change a new driver board
EE 19 PFC module high 1. PFC module thermal circuit output 1. Check the main board or replace the