Welcome to the Midea Mini Split website. GD Midea Air Conditioning is the leading manufacturer for all major brands like Toshiba,Carrier,Goodman,Friedrich,Samsung,Kenmore,Trane,Lennox,LG,and many more private labels like Senville, Klimaire, AirCon, Century, Pridiom, Thermocore and much more. Mitsubishi Electric now has mini split ac only units as well as full heat pump systems. Pioneer Mini Split Systems. The Pioneer mini split brand is owned by Parker Davis HVAC Systems is one of world’s many producers of heating and cooling products. This organization is one of the biggest providers of inexpensive ductless mini splits in the USA. Lennox MS8 SERIES Pdf User Manuals. View online or download Lennox MS8 SERIES Manual. Single-Zone Mini-Split System Air Conditioners and Heat Pumps.
This manual is applicable only to the following models.
Lennox Air Conditioner Inverter Split Type Error Codes;
LNIV2610 LNIV3510 LNIV5010 LNIV6510
Indoor Unit Error Display:
Error Codes | Cause |
---|---|
E0 | EEPROM parameter error |
E1 | Indoor/outdoor units communication protection |
E2 | Zero-crossing signal error |
E3 | Indoor fan speed out of control |
E5 | Open or short circuit of outdoor temperature sensor or outdoor unit EEPROM parameter error |
E6 | Open or short circuit of room or evaporator temperature sensor |
E7 | Outdoor fan speed out of control |
P0 | IBM malfunction or IGBT over-strong current protection |
P1 | Over voltage or too low voltage protection |
P2 | Temperature protection of compressor top |
P4 | Inverter compressor drive error |
Lennox Split AC Error Codes
If there is an error occurring during the operation of the system, the error code will be displayed on the LCD, as show in Fig.5.1. If multi errors occur at the same time, their codes will be displayed circularly.
Note: In event of any error, please turn off the unit and contact the professionally skilled personnel.
Meaning of Each Error
F1: Return air temperature sensor open/ short circuited
P6: Drive board communication error
F2: Evaporator temperature sensor open/ short circuited
H3: Compressor overheating protection
b5: Indoor unit liquid valve temperature sensor open/short circuited
LP: Indoor and outdoor units unmatched
b7: Indoor gas valve temperature sensor open/ short circuited
dn: Communication line misconnected or expansion valve error
P7: IPM temperature sensor open/short circuited
E7: Running mode conflict
F3: Outdoor ambient temperature sensor open/ short circuited
Fo: Pump-down
F4: Outdoor unit condenser mid-tube temperature sensor open/short circuited
C5: Jumper error
F5: Discharge temperature sensor open/ short circuited
H1: Forced defrosting
E6: Indoor and outdoor communication error
Lc: Compressor startup failure
PL: DC bus under-voltage protection
E4: High discharge temperature protection
PH: DC bus over-voltage protection
E8: Overload protection
U1: Compressor phase current sensing circuit error
E5: Whole unit over-current protection
HE: Compressor demagnetization protection
P5: Over phase current protection
Hc: PFC protection
H7: Compressor desynchronizing
Lennox Mini Split Ms8 User Manual Pdf
P8: IPM Temperature Protection
H5: IPM Current protection
L9: Over-power protection
Ld: Compressor phase loss/reversal protection
F0: System charge shortage or blockage protection
F8: Frequency restricted/reduced with whole unit current protection
PU: Capacitor charging error
IPM: Frequency restricted/reduced with
En: Current protection
E1: High pressure protection
F9: Frequency restricted/reduced with high discharge temperature
E3: Low pressure protection
FH: Frequency restricted/reduced with antifreezing protection
LE: Compressor stalling
F6: Frequency restricted/reduced with overload protection
LF: Over-speeding
EU: Frequency restricted/reduced with IPM temperature protection
PF: Drive board temperature sensor error
E9: Indoor unit full water error
P9: AC contactor protection
E2: Anti-freezing protection
PE: Temperature drift protection
PP: AC input voltage abnormal
Pd: Sensor connection protection
U5: Whole unit current sensing circuit error
U3: DC bus voltage drop error
U7: 4-way valve reversing error
L3: Outdoor fan 1 error protection
H6: Motor stalling
LA: Outdoor fan 2 error protection
U8: PG motor zero-crossing protection
Lennox Air Conditioner Mini Split Error Codes
Indoor and Outdoor Error Codes
Lennox AC Troubleshooting
Please check below items before asking for maintenance.
Phenomenon: Indoor unit can’t receive remote controller’s signal or remote controller has no action.
Check items:
- Whether remote controller is within the signal receiving range?
- Whether there are obstacles?
- Whether remote controller is pointing at the receiving window?
- Is sensitivity of remote controller low; fuzzy display and no display?
- No display when operating remote controller?
- Fluorescent lamp in room?
Solution:
- Signal receiving range is 8m.
- Remove obstacles.
- Select proper angle and point the remote controller at the receiving window on indoor unit.
- Check the batteries. If the power of batteries is too low, please replace them.
- Check whether remote controller appears to be damaged. If yes, replace it.
- Take the remote controller close to indoor unit.
Phenomenon: No air emitted from indoor unit
Lennox Mini Split Ms8 User Manual Download
Check items:
- Air inlet or air outlet of indoor unit is blocked?
- Under heating mode, indoor temperature is reached to set temperature?
- Heating mode is turned on just now?
Solution:
- Eliminate obstacles.
- After reaching to set temperature, indoor unit will stop blowing out air.
- In order to prevent blowing out cold air, indoor unit will be started after delaying for several minutes, which is a normal phenomenon.
Phenomenon: Air conditioner can’t operate
Check items:
- Power failure?
- Is plug loose?
- Air switch trips off or fuse is burnt out?
- Wiring has malfunction?
- Unit has restarted immediately after stopping operation?
- Whether the function setting for remote controller is correct?
Lennox Mini Split Ms8 User Manual
Solution:
- Wait until power recovery.
- Reinsert the plug.
- Ask professional to replace air switch or fuse.
- Ask professional to replace it.
- Wait for 3min, and then turn on the unit again.
- Reset the function.
Phenomenon: Mist is emitted from indoor unit’s air outlet
Check items: Indoor temperature and humidity is high?
Solution: Because indoor air is cooledrapidly. After a while, indoor temperature and humidity will be decrease and mist will disappear.
Phenomenon: Cooling ( heating) effect is not good
Check items:
- Voltage is too low?
- Filter is dirty?
- Set temperature is in proper range?
- Door and window are open?
Solution:
- Wait until the voltage resumes normal.
- Clean the filter.
- Adjust temperature to proper range.
- Close door and window.
Phenomenon: Outdoor unit has vapor
Check items: Heating mode is turned on?
Solution: During defrosting under heating mode, it may generate vapor, which is a normal phenomenon.
Phenomenon: ”Water flowing” noise
Check items: Air conditioner is turned on or turned offjust now?
Solution: The noise is the sound of refrigerant flowing inside the unit, which is a normal phenomenon.
Lennox Mini Split Ms8 User Manual Model
Phenomenon: Cracking noise
Lennox Mini Split Ms8 User Manual Free
Check items: Air conditioner is turned on or turned offjust now?
Solution: This is the sound of frictioh caused by expansion and/or contraction of panel or other parts clue to the change of temperature.
*PLEASE SEND ME ANY COMMENT, SUGGESTION OR CORRECTION YOU MAY HAVE.