Innovair Air Conditioner Error Codes But no piece of HVAC equipment is flawless. There’s always a possibility your mini split will malfunction. To find out what went wrong, you’ll want to locate where the mini split error codes are displayed. Knowing what these codes refer to can help ensure fast mini split repair, especially if professional help is necessary.
Innovair Air Conditioner Error Code Solutions
Error Codes | Problem |
---|---|
E2 | Anti-freezing protection |
E3 | Block or Low pressure of refrigerant system |
E4 | Compressor exhaust high temperature protection |
E5 | AC over-current protection |
E6 | Communication failure between indoor unit and outdoor unit |
E8 | Anti-high temperature protection |
H4 | Anti-high temperature protection |
H6 | No feedback of indoor fan motor |
C5 | Jumper cap malfunction protection |
LP | Indoor unit and outdoor unit doesn’t match |
L3 | Outdoor DC fan motor malfunction |
L9 | Power protection |
Fo | Gathering refrigerant |
F1 | Indoor ambient sensor open or short circuit |
F2 | Indoor tube sensor open or short circuit |
F3 | Outdoor ambient sensor open or short circuit |
F4 | Outdoor tube sensor open or short circuit |
F5 | Exhaust sensor open or short circuit |
F6 | Overload limit / drop frequency |
F8 | Over current limit / drop frequency |
F9 | High exhaust temperature limit / drop frequency |
F0 | Refrigerant leakage protection |
FH | Anti-freezing limit / drop frequency |
H1 | Defrosting |
H3 | Compressor overload protection |
H5 | IPM protection |
H5 | Module temperature is too high |
HC | PFC protection |
EE | Loading EEPROM malfunction |
PH | High PN voltage protection |
PL | Low PN voltage protection |
U7 | 4-way valve reversal abnormal |
d1/d2/d3 | DRED1 / DRED2 / DRED3 |
P0 | Compressor Min frequence in test state |
P1 | Compressor rated frequence in test state |
P2 | Compressor maximum frequence in test state |
P3 | Compressor intermediate frequence in test state |
EU | Frequency limiting (module temperature ) |
LU | Frequency limiting (power) |
JF | Malfunction of detecting plate (WIFI ) |
F0 | Insufficient fluorine protection |
innovair nature inverter mini split system:
Error Codes | Problem |
---|---|
E0 | Indoor unit EEPROM parameter error |
E1 | Indoor / outdoor units communication error |
E2 | Zero-crossing signal detection error |
E3 | Indoor fan speed has been out of control |
E4 | Indoor room temperature sensor T1 open circuit or short circuit |
E5 | Evaporator coil temperature sensor T2 open circuit or short circuit |
EC | Refrigerant leakage detection |
F1 | Outdoor temperature sensor T4 open circuit or short circuit |
F2 | Condenser coil temperature sensor T3 open circuit or short circuit |
F3 | Compressor discharge temperature sensor T5 open circuit or short circuit |
F4 | Outdoor unit EEPROM parameter error |
P0 | IPM malfunction or IGBT over-strong current protection |
P1 | Over voltage or over low voltage protection |
P4 | Inverter compressor drive error |
Diagnosis and Solution – How to Fix?
Error Code: E0/F4
EEPROM parameter error diagnosis and solution (E0/F4)
Malfunction decision conditions: Indoor or outdoor PCB main chip does not receive feedback from EEPROM chip.
Supposed causes: Installation mistake, PCB faulty.
Error Code: E1
Indoor / outdoor unit’s communication diagnosis and solution (E1)
Malfunction decision conditions: Indoor unit does not receive the feedback from outdoor unit during 110 seconds and this condition happens four times continuously.
Supposed causes: Wiring mistake, Indoor or outdoor PCB faulty.
Error Code: E2
Zero crossing detection error diagnosis and solution (E2)
Malfunction decision conditions: When PCB does not receive zero crossing signal feedback for 4 minutes or the zero crossing signal time interval is abnormal.
Supposed causes: Connection mistake, PCB faulty.
Error Code: E3
Fan speed has been out of control diagnosis and solution (E3)
Malfunction decision conditions: When indoor fan speed keeps too low (300RPM) for certain time, the unit will stop and the LED will display the failure.
Supposed causes: Wiring mistake, Fan ass’y faulty, Fan motor faulty, PCB faulty.
Error Code: E5
Open circuit or short circuit of temperature sensor diagnosis and solution (E5)
Malfunction decision conditions: If the sampling voltage is lower than 0.06V or higher than 4.94V, the LED will display the failure.
Supposed causes: Wiring mistake, Sensor faulty.
Error Code: EC
Refrigerant Leakage Detection diagnosis and solution (EC)
Malfunction decision conditions: Define the evaporator coil temp.T2 of the compressor just starts running as Tcool. In the beginning 5 minutes after the compressor starts up, if T2 <Tcool-2℃ does not keep continuous 4 seconds and this situation happens 3 times, the display area will show “EC” and AC will turn off.
Supposed causes: T2 sensor faulty, Indoor PCB faulty, System problems, such as leakage or blocking.
Error Code: P0
IPM malfunction or IGBT over-strong current protection diagnosis and solution (P0)
Malfunction decision conditions: When the voltage signal that IPM send to compressor drive chip is abnormal, the display LED will show “P0” and AC will turn off.
Supposed causes: Wiring mistake; IPM malfunction; Outdoor fan ass’y faulty Compressor malfunction; Outdoor PCB faulty.
Error Code: P1
Over voltage or too low voltage protection diagnosis and solution (P1)
Malfunction decision conditions: An abnormal voltage rise or drop is detected by checking the specified voltage detection circuit.
Supposed causes: Power supply problems, System leakage or block, PCB faulty.
Error Code: P2
High temperature protection of compressor top diagnosis and solution (P2)
Malfunction decision conditions: If the sampling voltage is not 5V, the LED will display the failure.
Supposed causes: Power supply problems, System leakage or block, PCB faulty.
Error Code: P4
Inverter compressor drive error diagnosis and solution (P4)
Malfunction decision conditions: An abnormal inverter compressor drive is detected by a special detection circuit, including communication signal detection, voltage detection, compressor rotation speed signal detection and so on.
Supposed causes: Wiring mistake; IPM malfunction; Outdoor fan ass’y faulty Compressor malfunction; Outdoor PCB faulty.