Brand: DAIKIN
Category: Refrigeration Unit
Document Type: Manual
Language: EN
Available Languages: EN , ES
Manual for LXE10E-A31
Uploaded: Sept. 12, 2025, 4:14 a.m.
Warranty Information
No specific warranty period is mentioned in this section.
Operation Modes and Control
The unit has several operation modes: Frozen, Partial frozen, Chilled, and Defrosting. Each mode has a specific setting temperature range and utilizes different control sensors (Return air temperature sensor or Supply air temperature sensor) to manage operation. For instance, the Frozen mode uses the Return air temperature sensor for Compressor ON/OFF control, while the Chilled mode uses the Supply air temperature sensor for Capacity control operation with suction modulating valve and hot-gas bypass control.
Dehumidification Mode
Dehumidification is controlled by a reheat coil. To activate it, controller settings are required. The Reheat Solenoid Valve (RSV) opens, and the "DEHUMID" LED lamp will light up. The dehumidification range can be set from 60%RH to 95%RH.
Mode Operation
In mode operation, the following settings/operations are available:
- Generator setting: Reduces total power consumption to a desired maximum setting for specific generators or power facilities. Selections include "off (No limit)" and various KVA ratings.
- Automatic pump down: Can be executed automatically.
- Dehumidification mode setting: When "Dehumidification" is set to "on", the inside humidity can be adjusted from 95% to 50% RH.
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 | |
| 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. | Restart after 3-minute | |
| Printed-circuit board failure | E201 | Low pressure drops to-90kPa or lower for 2 seconds or longer successively during normal operaton. | Restart after 3-minute |
| E203 | Overcool protection activates in the chilled or partial frozen mode. (Control temperature ≤ SP-3°C or for 3 minutes) | 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 |