Skip to content Skip to sidebar Skip to footer
Home / Lennox G71mpp Error 228 Continual Blockage Tubes

Lennox G71mpp Error 228 Continual Blockage Tubes

Post a Comment

This manual is applicable only to the following models.

Lennox Air Conditioner Inverter Split Type Error Codes;

Lennox AC Error Codes and Troubleshooting
Lennox AC Error Codes and Troubleshooting

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.

Lennox Split AC Error Codes
Lennox Split AC Error Codes

Note: In event of any error, please turn off the unit and contact the professionally skilled personnel.

Meaning of Each Error

Error Codes Meaning
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
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 AC Remote Control
Lennox AC Remote Control

Lennox Air Conditioner Mini Split Error Codes

Lennox Air Conditioner Mini Split Error Codes
Lennox Air Conditioner Mini Split Error Codes

Indoor and Outdoor Error Codes

INDOOR UNIT DISPLAY CODES (ALL SYSTEMS) 2
INDOOR UNIT DISPLAY CODES (ALL SYSTEMS) 2
INDOOR UNIT DISPLAY CODES (ALL SYSTEMS) 6
INDOOR UNIT DISPLAY CODES (ALL SYSTEMS) 6
INDOOR UNIT DISPLAY CODES (ALL SYSTEMS)
INDOOR UNIT DISPLAY CODES (ALL SYSTEMS)
INDOOR UNIT DISPLAY CODES (ALL SYSTEMS)3
INDOOR UNIT DISPLAY CODES (ALL SYSTEMS)3
INDOOR UNIT DISPLAY CODES (ALL SYSTEMS)4
INDOOR UNIT DISPLAY CODES (ALL SYSTEMS)4

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:

  1. Whether remote controller is within the signal receiving range?
  2. Whether there are obstacles?
  3. Whether remote controller is pointing at the receiving window?
  4. Is sensitivity of remote controller low; fuzzy display and no display?
  5. No display when operating remote controller?
  6. Fluorescent lamp in room?

Solution:

  1. Signal receiving range is 8m.
  2. Remove obstacles.
  3. Select proper angle and point the remote controller at the receiving window on indoor unit.
  4. Check the batteries. If the power of batteries is too low, please replace them.
  5. Check whether remote controller appears to be damaged. If yes, replace it.
  6. Take the remote controller close to indoor unit.

Phenomenon: No air emitted from indoor unit

Check items:

  1. Air inlet or air outlet of indoor unit is blocked?
  2. Under heating mode, indoor temperature is reached to set temperature?
  3. Heating mode is turned on just now?

Solution:

  1. Eliminate obstacles.
  2. After reaching to set temperature, indoor unit will stop blowing out air.
  3. 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:

  1. Power failure?
  2. Is plug loose?
  3. Air switch trips off or fuse is burnt out?
  4. Wiring has malfunction?
  5. Unit has restarted immediately after stopping operation?
  6. Whether the function setting for remote controller is correct?

Solution:

  1. Wait until power recovery.
  2. Reinsert the plug.
  3. Ask professional to replace air switch or fuse.
  4. Ask professional to replace it.
  5. Wait for 3min, and then turn on the unit again.
  6. 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 cooled\rapidly. After a while, indoor temperature and humidity will be decrease and mist will disappear.

Phenomenon: Cooling ( heating) effect is not good

Check items:

  1. Voltage is too low?
  2. Filter is dirty?
  3. Set temperature is in proper range?
  4. Door and window are open?

Solution:

  1. Wait until the voltage resumes normal.
  2. Clean the filter.
  3. Adjust temperature to proper range.
  4. 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.

Phenomenon: Cracking noise

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.

Lennox Air Conditioner Manual PDF

*PLEASE SEND ME ANY COMMENT, SUGGESTION OR CORRECTION YOU MAY HAVE.

joneshathemand.blogspot.com

Source: https://acerrorcode.com/lennox-air-conditioner-inverter-split-type-error-codes.html

You may like these posts

Post a Comment for "Lennox G71mpp Error 228 Continual Blockage Tubes"