Lennox V36C***S4-4P Error Codes

VRF indoor unit · VRF / VRV

• E101 No communication occurs between the indoor and outdoor units for 2 minutes.
• E102 Communication error received from the outdoor unit
• E108 Error of duplicated communication addresses (NASA only)
• E109 The communication address is not confirmed. (NASA only)
• E121 Open or short circuit error of the indoor-temperature sensor
• E122 Open or short circuit error of the evaporator-in sensor
• E123 Open or short circuit error of the evaporator-out sensor
• E128 3. The evaporator-in sensor is detached.
• E129 4. The evaporator-out sensor is detached.
• E151 Error due to the opened EEV (2nd detection)
• E152 2. Error due to the closed EEV (2nd detection)
• E153 Error of the second detection of the float switch
• E154 Error of the fan in the indoor unit
• E161 Error of mixed operation
• E162 EEPROM error
• E163 EEPROM option error
• E164 Error of incompatibility of the indoor unit
• E180 18. Simultaneous opening of the cooling and heating MSB SOL valves (1st detection)
• E181 19. Simultaneous opening of the cooling and heating MSB SOL valves (2nd detection)
• E198 Open circuit error of the thermal fuse
• E201 The number of the installed indoor units that is transmitted via communication after the…
• E202 Error of 3 minute tracking on the outdoor unit
• E221 1. Open or short circuit error of the outdoor-temperature sensor
• E237 2. Open or short circuit error of the condenser sensor
• E241 5. The condenser mid sensor is detached.
• E251 3. Open or short circuit error of the discharge sensor
• E301 13. The high pressure sensor is detached.
• E306 14. The low pressure sensor is detached.
• E403 12. The compressor stops due to freeze detection (6th detection)
• E410 17. Compressor shutdown due to the low-pressure-sensor prevention control_1
• E413 16. Outdoor sump down_1 prevention control
• E416 9. Abnormal high temperature on the air discharged from the outdoor unit (2nd detection)
• E425 11. Error of detection of a reverse phase
• E428 15. Compression ratio error of the outdoor unit
• E451 8. Low pressure switch (2nd detection)
• E554 6. Refrigerant leakage (2nd detection)
• E559 10. The indoor unit stops due to an unknown error of the outdoor unit.
• ice_blue: flashing every10seconds, yellow_green: off, blue: off, red: off In the defrost operation (blinking once every 10 seconds)
• ice_blue: flashing every2seconds, yellow_green: off, blue: off, red: off Power reset (blinking once every 2 seconds)
• ice_blue: flashing, yellow_green: flashing, blue: flashing, red: off MDS (Motion Detecting Sensor) Error
• ice_blue: off, yellow_green: flashing, blue: off, red: off Communication errors other then the errors listed above
• ice_blue: off, yellow_green: off, blue: flashing, red: off Self-diagnosis errors other than the errors listed above

Reference only. Confirm against the manual for your exact model. Data release 105f66ecb9e96e5dc473025d.