MCAC-VTSM-2015-09 R410A All DC Inverter V4+S Series 60Hz
Troubleshooting 133
2. Error code table
Communication error between outdoor units
Only display on the faulty slave unit
Communication error between indoor units and the master unit.
Only display on the master unit
Malfunction of outdoor ambient temperature sensor (T4)
Display on the faulty unit
Malfunction of power supply voltage
Display on the faulty unit
Malfunction of discharge temperature sensor
Display on the faulty unit
Faulty outdoor unit address
Display on the faulty unit
Malfunction of communication between main control chip and inverter
driver chip
Display on the faulty unit
Malfunction of communication between main control chip and
communication chip
Display on the faulty unit
Outdoor unit quantity is decreased
Only display on the master unit
Outdoor unit quantity is increased
Only display on the master unit
Inverter module protection
Display on the faulty unit
Cannot be recovered until re-power on
P2 protection appears three times in 60 minutes
Display on the faulty unit
Cannot be recovered until re-power on
P4 protection appears three times in 100 minutes
Display on the faulty unit
Cannot be recovered until re-power on
Faulty indoor units quantity
Display on the master unit
Cannot be recovered until unit quantity
recover
Malfunction of pressure sensor for discharge pipe
The discharge pressure
Pc≤0.3MPa(43.5PSI)
P9 protection appears three times in 60 minutes
Display on the faulty unit
Cannot be recovered until re-power on
Y stands for corresponding slave unit, y=1,
2, 3.
Temperature protection of inverter compressor
Display on the faulty unit
Display on the faulty unit
Display on the faulty unit
Over current protection of compressor
Display on the faulty unit
Discharge temperature protection
Display on the faulty unit
Condenser high temperature protection
Display on the faulty unit
Display on the faulty unit
Temperature protection of inverter module
PL protection appears three times in 100 minutes
DC generatrix low voltage error
DC generatrix high voltage error
MCE error/ synchronization/ closed loop
Frequency difference in one second more than 15Hz protection
Frequency difference between the real and the setting frequency more
than 15Hz protection