Norsup 7021075 Mode D'emploi page 30

Temperature of IPM
EE 15
module is too high
PFC module
EE 16
protection
EE 17 DC fan motor failure
PFC module
EE 18 thermal circuit is
abnormal
PFC module high
EE 19 temperature
protection
The input power
EE 20
failure
Software control
EE 21
exception
Current detection
EE 22
circuit failure
Compressor startup
EE 23
failed
Ambient
EE 24 Temperature device
failure on Driver
1. Output exception of IPM
module thermal circuit
2. Motor is abnormal
damaged
3. Fan blade is broken
1. Output exception of PFC
module
2. Motor is abnormal
damaged
3. Fan blade is broken
4. Input voltage leap, input
power is abnormal
1. DC motor is damaged
2. Main board is damaged
3. The fan blade is stuck
The driver board is damaged
1. PFC module thermal circuit
output abnormal
2. Motor is abnormal
damaged
3. Fan blade is broken
4. The screw in the driver board
is not tight
Power supply voltage fluctuates
too much
1. Compressor run out of step
2. Wrong program
3. Impurity inside compressor
causes the unstable
speed
1. Voltage signal abnormal
2. Driver board is damaged
1. Main board is damaged
2. Compressor wiring error or
poor contact or unconnected
3. Liquid accumulation inside
4. Wrong phase connection for
compressor
Ambient Temperature device
failure
27
1. Change a driver board
2. Check if the fan motor speed is too low
or or fan motor damaged, change another
one
3. Change another fan blade
1. Change a driver board
or 2. Check if the motor speed is too low or
fan motor damaged, change another one
3. Change another fan blade
4. Check the input voltage
1. Detect DC motor, replace with a new
one
2. Change a new main board
3. Find out the barrier and work it out
1. Change a new driver board
2. Check if the fan motor speed is too low
or fan motor damaged, change another
one
1. Change a new driver board
or 2. Check if the motor speed is too low or
fan motor damaged, change another one
3. Change another fan blade
4. Check if the screw is loose
Check whether the voltage is stable
1. Check the main board or change a new
one
rotate 2. Enter correct program
1. Check the main board or change a new
one
2. Change a new driver board
1. Check the main board or change a new
one
2. Check the compressor wiring according
to the circuit diagram
Check the compressor or change a new
one
Change driver board or main board