Brand: DAIKIN
Category: Refrigeration Unit
Document Type: Parts/Service
Language: EN
Parts/Service for LXE10E-A27A
Uploaded: Sept. 12, 2025, 4:26 a.m.
1. Introduction
1.1 OPERATION RANGE
Use the units within the following range.
| Item | Operation range |
| Ambient temperature range | -30°C to +50°C (-22°F to + 122°F) |
| Inside temperature range | -30°C to +30°C (-22°F to + 86°F) |
| Voltage | 50Hz: 380V/400V/415V, 60Hz: 440V/460V |
| Vibration and shock | Voltage fluctuation rate should be within ±10% 2G |
1.2 BASIC NAMES OF COMPONENTS
① Compressor
② Air-cooled condenser
③ Receiver
④ Evaporator
⑤ Control box
Outside: switch, manual defrost switch, monitoring receptacle
Inside: circuit breaker
⑥ Condenser fan
⑦ Drier
⑧ Access panel
⑨ Storage space for power cable
⑩ Ventilator
⑪ Sampling port (Return) (Use this port to measure the inside return air temperature.)
⑫ Gas sampling port (Supply) (This is used to measure the inside supply air temperature and inside CO₂ concentration.)
⑬ Liquid moisture indicator
Troubleshooting and error codes
| Alarm grouping | Alarm code | Alarm content | Action with alarm |
|---|---|---|---|
| Permanent stop | F101 | HPS activated within 30 seconds after operation start or protection device activated 5 times at start-up operation or Fuse 1 brown (Refer Page 7-7). | Unit stops |
| F109 | Low- pressure drops to-85kPa or lower within 2 seconds after operation start. | Unit stops | |
| F111 | HPS does not activate when it reaches to the set value. | Unit stops | |
| F301 | Temperature setting required (SRAM failure) | Unit stops | |
| F401 | Return/Supply air sensor malfunction (at chilled mode) | Unit stops | |
| F403 | Return/Supply air sensor malfunction (at partial frozen mode) | Unit stops | |
| F603 | Suction modulating valve (SMV) does not fully close contrary to the designation or initial setting of the controller is wrong. | Unit stops | |
| F701 | Abnormal high voltage (over 600V) | Unit stops | |
| F705 | S phase became open phase | Unit stops | |
| F803 | Abnormalities, which make it impossible to continue operation (Note2.) | Unit stops | |
| Control error | E101 | High-pressure switch activated during normal operation. | Restart after 3-minute |
| E103 | CTP or electronic OC activated during normal operation. | Restart after 3-minute | |
| E105 | Micro processor OC activated during normal operation. | Restart after 3-minute | |
| E107 | DCHS became abnormal high temperature during operation. In the event the refrigerant circulation rate is low, the unit will stand by for three minutes to restart then. | Restart after 3-minute | |
| Protection device activation | E109 | Low pressure drops to-90kPa or lower for 2 seconds or longer successively during normal operaton. | Restart after 3-minute |
| E201 | Pump down is not completed within 90 seconds. | Only alarm display | |
| E203 | Overcool protection activates in the chilled or partial frozen mode. (Control temperature ≤ SP-3°C or for 3 minutes) | Restart after 3-minutes | |
| Printed-circuit board failure | E205 | Evaporator for motor failure | Only alarm display |
| E207 | Defrosting is not completed within 90 minutes | Only alarm display | |
| E303 | Humidity setting required (SRAM failure) | Only alarm display | |
| E305 | Defrost timer setting required (SRAM failure) | Only alarm display | |
| E307 | Calendar setting required (SRAM failure) | Only alarm display | |
| E311 | Trip-start setting required (SRAM failure) | Only alarm display | |
| E315 | PT/CT board failure | Restart after 3-minutes | |
| Sensor alarm | E401 | Supply air temperature sensor (SS) malfunction | Back-up operation |
| E402 | Data recorder supply air temperature sensor (DSS) malfunction | Back-up operation | |
| E403 | Return air temperature sensor (RS) malfunction | Back-up operation | |
| E404 | Data recorder return air temperature sensor (DRS) malfunction | Back-up operation | |
| E405 | Discharge air temperature sensor (DCHS) malfunction | Only alarm display | |
| E406 | Suction gas temperature sensor (SGS) malfunction | Back-up operation | |
| E407 | Evaporator inlet temperature sensor (EIS) malfunction | Back-up operation | |
| E409 | Evaporator outlet sensor (EOS) malfunction | Back-up operation | |
| E411 | Ambient sensor (AMBS) malfunction | Only alarm display | |
| E413 | Low pressure transducer (LPT) malfunction | Back-up operation | |
| E415 | High pressure transducer (HPT) malfunction | Back-up operation | |
| E417 | Voltage sensor (PT1) malfunction | Only alarm display | |
| E421 | Current sensor (CT1) malfunction | Only alarm display | |
| E423 | Current sensor (CT2) malfunction | Restart after 3-minutes | |
| E425 | Pulp temperature sensor (USDA1) malfunction | Only alarm display | |
| E427 | Pulp temperature sensor (USDA2) malfunction | Only alarm display | |
| E429 | Pulp temperature sensor (USDA3) malfunction | Only alarm display | |
| E431 | Humidity sensor (HuS) malfunction | Only alarm display | |
| E433 | Cargo temperature sensor (CTS) or box temperature sensor (CBS) malfunction | Only alarm display | |
| Ohter Power Electronic alarm supply functional | E603 | Suction modulating valve (SMV) malfunction or driver malfunction | Back-up operation |
| E607 | MDS (sheet key) malfunction | Only alarm display | |
| E707 | Momentary power failure | Restart after 3-minutes | |
| E801 | Backup battery replacement date exceeded | Only alarm display |