15
EvoHeat CS-i Commercial Inverter Series Heat Pump
Frequency Conversion Board Fault Table
Protect/fault
Fault
display
Reason
Elimination methods
Drv1 MOP alarm
F01
MOP drive alarm
Recovery after the 150s
Inverter offline
F02
Frequency conversion board and
main board communication failure
Check the communication connection
IPM protection
F03
IPM modular protection
Recovery after the 150s
Comp. Driver Failure
F04
Lack of phase, step or drive
hardware damage
Check the measuring voltage check
frequency conversion board hardware
DC Fan Fault
F05
Motor current feedback open circuit
or short circuit
Check whether current return wires
connected motor
IPM Overcurrent
F06
IPM Input current is large
Check and adjust the current measurement
Inv. DC Overvoltage
F07
DC bus voltage>Dc bus over-voltage
protection value
Check the input voltage measurement
Inv. DC Less voltage
F08
DC bus voltage<Dc bus over-voltage
protection value
Check the input voltage measurement
Inv. Input Less volt.
F09
The input voltage is low, causing
the input current is high
Check the input voltage measurement
Inv. Input Overvolt.
F10
The input voltage is too high,
more than outage protection
current RMS
Check the input voltage measurement
Inv. Sampling Volt.
F11
The input voltage sampling fault
Check and adjust the current measurement
Comm. Err DSP-PFC
F12
DSP and PFC connect fault
Check the communication connection
Input Over Cur.
F26
The equipment load is too large
PFC fault
F27
The PFC circuit protection
Check the PFC switch tube short circuit or
not
IPM Overheating
F15
The IPM module is overheat
Check and adjust the current measurement
Weak Magnetic Warn
F16
Compressor magnetic force is not
enough
Inv. Input Out Phase
F17
The input voltage lost phase
Check and measure the voltage adjustment
IPM Sampling Cur.
F18
IPM sampling electricity is fault
Check and adjust the current measurement
Inv. Temp. Probe Fail
F19
Sensor is short circuit or open circuit
Inspect and replace the sensor
Inverter Overheating
F20
The transducer is overheat
Check and adjust the current measurement
Inv. Overheating Warn
F22
Transducer temperature is too high
Check and adjust the current measurement
Comp. Over Cur. Warn
F23
Compressor electricity is large
The compressor over-current protection
Input Over Cur. Warn
F24
Input current is too large
Check and adjust the current measurement
EEPROM Error Warn
F25
MCU error
Check whether the chip is damaged Replace
the chip
V15V over/undervoltage
fault
F28
The V15V is overload or
undervoltage
Check the V15V input voltage in range
13.5v~16.5v or not
