Midea VRF Error Codes



R410A All DC Inverter V4 Plus R Series 50/60Hz Error Codes:

V4 VRF: Advanced 3-pipe technology enables heat recovery between indoor units for unprecedented economy and performance. It can simultaneously operate in cooling and heating mode when it is necessary to provide more freedom for operation. It compensates and adjusts when there are hot and cold rooms in the same building, depending on the direction of sunshine. As a result, it reduces annual power consumption.

Midea VRF Error Codes
Midea VRF Error Codes
Error CodesProblem
E0Communication error between outdoor units. Only display on the faulty slave unit, all the ODUs are in standby.
E1 Phase sequence error. Display on the faulty unit, all the ODUs are in standby.
E2Communication error between indoors and the master unit. Only display on the master unit, all the ODUs are in standby.
E4Outdoor ambient temperature sensor (T4) and condenser pipe temperature sensor (T3/T5) error. Display on the faulty unit, all the ODUs are in standby.
E5Power voltage error. Display on the faulty unit, all the ODUs are in standby.
E7Discharge temp sensor error. Display on the faulty unit, all the ODUs are in standby.
E8Outdoor unit address is wrong. Only display on the faulty slave unit, all the ODUs are in standby.
XE9 Driver model is mismatching. When X is 1, it means A system; 2 means B system.
H0
Communication error between main control chip and inverter driver chip. Display on the faulty unit, all the ODUs are in standby.
H1
Communication error between main control chip and communication chip. Display on the faulty unit, all the ODUs are in standby.
H2Quantity of outdoor unit decreased. Only display on the master unit, all the ODUs are in standby.
H3Quantity of outdoor unit increased. Only display on the master unit, all the ODUs are in standby.
H4P6 protection appears three times in 60 minutes. Display on the faulty unit, all the ODUs are in standby. Cannot be recovered until re-power on.
H5P2 protection appears three times in 60 minutes. Display on the faulty unit, all the ODUs are in standby. Cannot be recovered until re-power on.
H6P4 protection appears three times in 100 minutes. Display on the faulty unit, all the ODUs are in standby. Cannot be recovered until re-power on.
H7Quantity of indoor unit decreased. Only display on the master unit, all the ODUs are in standby.
H8 High pressure sensor error. The discharge pressure Pc≤0.3MPa(43.5PSI).
H9P9 protection appears three times in 60 minutes. Display on the faulty unit, all the ODUs are in standby. Cannot be recovered until being power on again.
xHdSlave units malfunction. X stands for corresponding slave unit.
C7 PL protection appears three times in 100 minutes. Display on the faulty unit, all the ODUs are in standby. Cannot be recovered until re-power on.
P1High pressure protection. Display on the faulty unit, all the ODUs are in standby.
P2Low pressure protection. Display on the faulty unit, all the ODUs are in standby.
XP3 Over current protection of inverter compressor. Display on the faulty unit, all the ODUs are in standby.
P4Compressor discharge temp protection. Display on the faulty unit, all the ODUs are in standby.
P5Condenser high temperature protection. Display on the faulty unit, all the ODUs are in standby.
XP6 Inverter module protection. When X is 1, it means A inverter module; 2 means B inverter module.
P9Fan module protection. Display on the faulty unit, all the ODUs are in standby.
PLTemperature protection of main inverter module.
L0Inverter module error. Display after P6 displaying for one minute.
L1 DC generatrix low voltage error. Display after P6 displaying for one minute.
L2DC generatrix high voltage error. Display after P6 displaying for one minute.
L3 Reserved.
L4 MCE error/ synchronization/ closed loop. Display after P6 displaying for one minute.
L5 Zero speed protection. Display after P6 displaying for one minute.
L6 Reserved.
L7 Phase sequence error. Display after P6 displaying for one minute.
L8Frequency difference in one second more than 15Hz protection. Display after P6 displaying for one minute.
L9Frequency difference between the real and the setting frequency more than 15Hz protection. Display after P6 displaying for one minute.

V6-i VRF 50/60Hz Error Codes:

V6 VRF: As the leading VRF product, V6 boasts substantial benefits such as the single capacity can be up to 32HP (34HP for India) which is leading in HVAC industry; EVI compressor significantly increases heating and cooling capacity under extreme conditions, EMS realizes that evaporating temperature (in cooling) and condensing temperature (in heating) are automatically adjusted according to both indoor and outdoor temperature to maximize the comfort and energy efficiency.




Midea V6 VRF Error Codes
Midea V6 VRF Error Codes
Error CodesProblem
E1Phase sequence
E2Communication error between indoor and outdoor units
E4Outdoor heat exchanger temperature sensor (T3) error or outdoor ambient temperature sensor (T4) error
E5Abnormal power supply voltage
E7Compressor top or discharge pipe temperature sensor (T7C1/2) error
E8Outdoor unit address error
xE9EEPROM mismatch
xF1DC bus voltage error
F3
Plate heat exchanger cooling refrigerant outlet temperature sensor (T6B) error
F5Plate heat exchanger cooling refrigerant inlet temperature sensor (T6A) error
F6Electronic expansion valve connection error
xH0Communication error between main control chip and inverter driver chip
xH4 Inverter module protection
H5P2 protection appears three times in 60 minutes
H6P4 protection appears three times in 100 minutes
H7Number of indoor units detected by outdoor unit not same as number set on main PCB
H8High pressure sensor error
H9P9 protection appears ten times in 120 minutes
C7PL protection appears three times in 100 minutes
P1Discharge pipe high pressure protection
P2Suction pipe low pressure protection
xP3Compressor current protection
P4Discharge temperature protection
P5 Outdoor heat exchanger temperature protection
P9 Fan module protection
PL Inverter module temperature protection
PPCompressor discharge insufficient superheat protection
xL0 Inverter module protection
xL1 DC bus low voltage protection
xL2DC bus high voltage protection
xL4MCE error
xL5Zero speed protection
xL7Phase sequence error
xL8Compressor frequency variation greater than 15Hz within one second protection
xL9Actual compressor frequency differs from target frequency by more than 15Hz protection



R410A All DC Inverter Mini VRF Error Codes:

Midea VRF systems feature a compact footprint which requires less outdoor space, and with long piping length, the system allows maximum flexibility in installation. There are also a variety of indoor unit styles available depending on the preference of the homeowner or the installation requirements.

Mini VRF Error Codes
Mini VRF Error Codes
Error CodesProblem
HF Not matched with M_HOME indoor unit
E0EEPROM malfunction
E9EEPROM malfunction
E2 Communication malfunction between indoor/outdoor units
E3Communication malfunction in outdoor PCB
H0Communication malfunction in outdoor PCB
E4T3&T4 temperature sensor malfunction
E5Outdoor unit voltage protection
E6 DC fan error
E7Discharge Sensor Malfunction
EADischarge Sensor Malfunction
E8There are two times E6 fault in 10 minutes (recovery after power off)
EbThere are two times E6 fault in 10 minutes (recovery after power off)
P0 Reserved
P1High pressure protection
P2Low pressure protection
P3 Compressor current protection
P4Compressor discharge temperature protection
P5Condenser high temperature protection
P6IPM modules protection
P7Evaporator high temperature protection
PEEvaporator high temperature protection
P8Typhoon protection
L0Module malfunction
L1DC generatrix low voltage protection
L2DC generatrix high voltage protection
L3 Reserved
L4 MCE malfunction/simultaneously/cycle loop
L5Zero speed protection
L6Reserved
L7Wrong phase protection
L8
Speed difference>15Hz protection between the front and the back clock
L9
Speed difference>15Hz protection between the real and the setting speed



Midea VRF Service Manual PDF

Midea AC Error Codes and Troubleshooting




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