Sinclair is a Scottish brand that comes with a 100-year-long history. Inspired by the clan, the Sinclair Corporation LTD, created a mark on the world that will last longer than the clan. Operating in 25 countries the company offers air conditioning, heat pumps, LED light segments, and other household and commercial products. The company is known to work on creating a blue planet, one that ensures comfortable living while producing the environment.
Every single product the company puts out is thoroughly tested and tried before being launched. So only the highest quality and most reliable products make it to the market. Currently, the company is focused on three groups: air conditioning, air-to-water heat pumps, and LED lights. Offering you top-grade technology that is designed to last.
Sinclair might be a high-ranking company, but from time to time customers have complained about system errors. Fortunately, most of these errors can be fixed on your own. So rather than ignoring the error codes, your appliance is showing its time to note down the Sinclair air conditioner error code and get to the bottom of the problem. To help you out we have listed down the most common error codes of Sinclair air conditioners.
Wall Mounted Units, Vision Series
| Error Codes | Solution |
|---|---|
| E1 | High pressure protection of system |
| E2 | Antifreezing protection |
| F0 | In defect of refrigerant |
| E4 | High discharge temperature protection of compressor |
| E5 | Overcurrent protection |
| E6 | Communication Malfunction |
| E8 | High temperature resistant protection |
| EE | EEPROM malfunction |
| EU | Limit/ decrease frequency due to high temperature of module |
| C5 | Malfunction protection of jumper cap |
| Fo | Gathering refrigerant |
| F1 | Indoor ambient temperature sensor is open/short circuited |
| F2 | Indoor evaporator temperature sensor is open/short circuited |
| F3 | Outdoor ambient temperature sensor is open/short circuited |
| F4 | Outdoor condenser temperature sensor is open/short circuited |
| F5 | Outdoor discharge temperature sensor is open/short circuited |
| F6 | Limit/ decrease frequency due to overload |
| F8 | Decrease frequency due to overcurrent |
| F9 | Decrease frequency due to high air discharge |
| FH | Limit/ decrease frequency due to antifreezing |
| PH | Voltage for DC bus-bar is too high |
| PL | Voltage of DC bus-bar is too low |
| 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 |
| P5 | Overcurrent protection of phase current for compressor |
| PU | Charging malfunction of capacitor |
| P7 | Malfunction of module temperature sensor circuit |
| P8 | Module high temperature protection |
| H3 | Overload protection for compressor |
| H5 | IPM protection |
| U8 | Malfunction of zero-cross detection circuit |
| H6 | Internal motor (fan motor) do not operate |
| H7 | Desynchronizing of compressor |
| HC | PFC protection |
| L3 | Outdoor DC fan motor malfunction |
| L9 | Power protection |
| LP | Indoor unit and outdoor unit doesnt match |
| LC | Failure startup |
| U1 | Malfunction of phase current detection circuit for compressor |
| U3 | Malfunction of voltage dropping for DC bus-bar |
| U5 | Malfunction of complete units current detection |
| U7 | The four-way valve is abnormal |
| JF | Malfunction of detecting plate (WIFI) |
| F0 | In defect of refrigerant |
If there is malfunction during running of the system, LCD will display error code at temperature–displayed location. Once there is more than one malfunction, error codes will be displayed circularly. If there are multiple circuit systems, the system number of failed system will be displayed before the colon (not for single system). If malfunction occurs, turn off the unit and contact nearest dealer for help.
Multi System Series
If some error occurs when the unit is running, the error code will be displayed on the wired controller and the main board ”88” the outdoor unit.See the table before for more details about the meaning of each error.
| Error Code | Problem |
|---|---|
| E1 | High Pressure Protection |
| E2 | Shutdown for Whole Unit Anti-Freeze Protection |
| E3 | Low Pressure Protection |
| E4 | High Discharge Temp Protection |
| E6 | Communication Error |
| E9 | Indoor Unit Water Full Error |
| Fo | Refrigerant Recovery Mode |
| F3 | Outdoor Ambient Temp Sensor Error |
| F4 | Outdoor Mid-Coil Temp Sensor Error |
| F5 | Outdoor Discharge Air Temp Sensor Error |
| F7 | Oil Return for Cooling |
| H1 | Forced Defrosting |
| H1 | Oil Return for Heating or Defrosting |
| H3 | Compressor Overheat Protection |
| H5 | IPM Protection |
| H7 | Motor Desynchronizing |
| Hc | PFC Error |
| Lc | Startup Failure |
| LA | DC Fan motor Error |
| H6 | No indoor fan motor |
| U1 | Compressor phase circuit detection error |
| U3 | DC link voltage drop error |
| U8 | Zero detection circuit error |
| Ld | Phase Loss |
| LE | Compressor Stalling |
| LF | Over-Speed |
| P0 | IPM Reset |
| P5 | Compressor Current Protection |
| P6 | Communication Error between the Inverter Drive and the Main Controller |
| P7 | Radiator Temp Sensor Error |
| P8 | Radiator Overheat Protection |
| P9 | AC Contactor Protection |
| Pc | Current Sensor Error |
| Pd | Sensor Connection Protection |
| PH | Over Voltage Protection |
| PL | Low Voltage Protection |
| PE | Temp Drift Protection |
| PF | Drive Board Ambient Temp Sensor Error |
| PA | AC Current Protection |
| PU | Charging Circuit Error |
| PP | AC Input Voltage Anomaly |
| E6 | Unit communication error |
| E2 | Unit n indoor pipe midway temperature sensor error |
| F2 | Indoor Evaporator Temp Sensor Short/ Open-Circuit |
| b7 | (Air Valve) Unit n indoor unit pipe outlet temperature sensor error |
| b5 | (Liquid Valve) Unit n indoor pipe inlet temperature sensor error |
| F1 | Unit n mode conflict |
| E7 | Mode Conflict |
Duct Series
| Error code | Malfunction |
|---|---|
| E0 | Water Pump Malfunction |
| E1 | High pressure protection of compressor |
| E3 | Low pressure protection of compressor |
| E4 | High discharge temperature protection of compressor |
| E5 | Compressor overload or drive error |
| E6 | Communication malfunction |
| E9 | Water overflow protection |
| F0 | Indoor unit ambient sensor malfunction at air return opening |
| F1 | Evaporator sensor malfunction |
| F2 | Condenser sensor malfunction |
| F3 | Outdoor unit ambient temperature sensor malfunction |
| F4 | Discharge temperature sensor malfunction |
| F5 | Ambient sensor malfunction on Displayer (or LED board) |
Troubleshooting and Maintenance
If your air-conditioning unit suffers from abnormal operation or failure, please first check the flowing points before repair:
Failure: The unit cannot be started.
Possible Reasons:
- The power supply is not connected.
- Electrical leakage of air-conditioning unit causes tripping of leakage switch.
- The operating keys are locked.
- The control loop has failure
Failure: The unit operates for a while and then stops.
Possible Reasons:
- There is obstacle in front of the condenser.
- The control loop is abnormal.
- Cooling operation is selected when the outdoor ambient temperature is above 43°C.
Failure: Poor cooling effect.
Possible Reasons:
- The air filter is dirty or blocked.
- There is heat source or too many people inside the room.
- The door or window is open.
- There is obstacle at the air intake or outlet.
- The set temperature is too high thus cooling is hindered.
- There is refrigerant leakage.
- The performance of room temperature sensor becomes worse
Failure: Poor heating effect
Possible Reasons:
- The air filter is dirty or blocked.
- The door or window is not firmly closed.
- The set room temperature is too low thus heating is hindered.
- There is refrigerant leakage.
- The outdoor ambient temperature is lower than -5°C.
- Control line is abnormal.
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*If you can't find the code you're looking for on our site, please let us know, and we'll update our database as soon as possible.