MAITEC ARMATUREN 7008470M, User And Service Manual, Page: 63 / 89

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4. Compressor or driver board
damaged
VDC voltage too low protection EE12 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
Input current over high protection. EE13 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
IPM module thermal circuit is
abnormal
EE14
1. Output enormity of IPM module
thermal circuit
2. Fan motor is abnormal or damaged
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
IPM module temperature too high
protection
EE15
1. Output exception of IPM module
thermal circuit
2. Motor is abnormal or damaged
3. Fan blade is broken
1. Change a driver board
2. Check if the fan motor speed is too
low or fan motor damaged, change
another one
3. Change another fan blade
PFC module protection EE16
1. Output exception of PFC module
2. Motor is abnormal or damaged
3. Fan blade is broken
4. Input voltage leap, input power is
abnormal
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
4. Check the input voltage
DC fan motor failure EE17
1. DC motor is damaged
2. Main board is damaged
3. The fan blade is stuck
1. Detect DC motor, replace with a
new one
2. Change a new main board
3. Find out the barrier and work it
out
PFC module thermal circuit is
abnormal
EE18 The driver board is damaged
1. Change a new driver board
2. Check if the fan motor speed is too
low or fan motor damaged, change
another one
PFC module high temperature
protection
EE19
1. PFC module thermal circuit output
abnormal
2. Motor is abnormal or damaged
3. Fan blade is broken
4. The screw in the driver board is not
tight
1. Change a new driver board
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
Input power failure EE20
The supply voltage fluctuates too
much
Check whether the voltage is stable