Some issues can be resolved without any maintenance to the unit, check the chart below to see if there is a suggested solution to the problem before calling for service.
Glossary of Error Codes and Their Meanings:
| Error Codes | Meaning |
|---|---|
| E1 | High Pressure Protection |
| E2 | Shutdown for Whole Unit AntiFreeze 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 |
| H2 | 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 |
| 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 |
Troubleshooting
Before calling for service, review this list. It may save you time and expense. This list includes common occurrences that are not the result of defective workman-ship or materials in this appliance.
Problem: The unit will not operate at all.
Cause:
- Blown Fuse or tripped circuit breaker
- Power Failure
- Remote Control batteries are low
- Signal from remote control is not being sent
Solution:
- Check the fuse or circuit breaker. Replace the blown fuse or reset the circuit breaker.
- Wait until the power is restored to restart the unit. If you experience brown out conditions, contact an electrician or your local utility.
- Replace the batteries. Be sure not to mix old and new batteries, as well as different brands/types
- Be sure that you are not using the remote control too far away from the indoor unit’s control panel.
Problem: The unit runs and then stops immediately
Cause: Air inlets and/or outlets are blocked
Solution: Remove any obstacles from the air inlets/outlets/Clean the air filter, louvers, and inlet grille.
Problem: Abnormal heating or cooling
Cause:
- Air inlets and/or outlets are blocked
- Improper temperature is set
- Check the fan speed
- Improper louver adjustment
- Be sure that there are no other sources of heat/steam in the area being cooled
- Conditioned air might be escaping
Solution:
- Remove any obstacles from the air inlets/outlets-Clean the air filter, louvers, and inlet grille.
- Ensure that the proper mode and temperature is set on the unit. Try to adjust the set point temperature on the thermostat to a better operating temperature
- Adjust the fan speed to see if that improves the conditions.
- Try to adjust the louver position to ensure it is open enough.
- Remove or turn off other appliances producing heat or steam.
- Ensure that any doors or windows in the area being heated/cooled are closed
Problem: Air from unit does not feel cold enough
Solution:
- Room temperature below 62 F(17 C ). Cooling may not occur until room temperature O O rises above 62 F(17 C).
- Temperature sensing behind air filter element touching cold coil. Keep it from the cold coil.
- Set to a Lower temperature.
- Compressor stopped when changing modes. Wait for 3 minutes after set to the COOL mode.
Problem: Noise when unit is cooling
Solution:
- Air movement sound. This is normal . If too loud, set to a slower FAN setting.
- Window vibration – poor installation. Refer to installation instructions or check with installer.
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