Zodiac Z250 Instructions For Installation And Use Manual page 54

Er40
Out of phase protection
Er41
Compressor current
protection
Er42
Inside coil temperature
sensor error
Er45
Drive PCB ambient temp.
thermo-bulb error
Er46
Input power abnormal error
Er47
Excessive input current
protection
Er48
IPM thermo-bulb error
Er49
PFC module protection
Er50
PFC thermo-bulb error
Er51
Software control error
Er52
VDC voltage too low
protection
23
Abnormal driving control
Abnormal driving control
Sensor disconnected or defective
Abnormal driving control
Abnormal driving control
Abnormal driving control
Abnormal driving control
Abnormal driving control
Abnormal driving control
Abnormal driving control
Abnormal driving control
Check if the compressor is connected
properly
Replace drive PCB
Check if the refrigerant is sufficient and
the vacuum of the system if sufficient
Replace drive PCB
Replace compressor
Reconnect or replace sensor
Replace drive PCB
Check if the input voltage is normal
Replace drive PCB
Check if the refrigerant is sufficient and
the vacuum of the system if sufficient
Replace drive PCB
Replace compressor
Replace drive PCB
Replace drive PCB
Replace compressor
Replace drive PCB
Replace drive PCB
Replace drive PCB