Daikin EWLQ014KBW1N - User Manual

Questions and Answers

J
Jason WatsonAug 17, 2025
What to do if Daikin EWLQ014KBW1N Chiller doesn't start, but the L LED lights up?
- J
  Jillian McbrideAug 17, 2025
  If your Daikin Chiller unit doesn't start but the L LED is lit, first ensure the temperature setting is correct by checking the controller setpoint. Then, check for a power supply failure by examining the voltage on the supply panel. Also, inspect fuses and protection devices, replacing any blown fuses with the same size and type. Inspect all field and internal wiring connections, tightening any that are loose. Finally, test circuits using a tester to find and repair any shorted or broken wires.
K
Karina DavisAug 20, 2025
What to do if I have low pressure switch or anti-freeze alarm on Daikin EWLQ014KBW1N?
- L
  Larry NelsonAug 20, 2025
  If you're experiencing a low pressure switch or anti-freeze alarm with your Daikin Chiller, first increase the water flow to the water heat exchanger. If that doesn't resolve the issue, check for refrigerant leaks and refill if necessary. Ensure the unit is operating within its specified range. Also, verify that the inlet water temperature to the water heat exchanger is adequate and check the flow switch and water pump for proper operation. After pressure rise, the low pressure switch resets automatically, but the controller still needs to be reset.
R
rgonzalezAug 23, 2025
What to do if Daikin Chiller doesn't start and the L LED does not light up?
- L
  Lucas MatthewsAug 23, 2025
  If your Daikin Chiller unit doesn't start and the L LED is not lit, check the fuses on the supply panel or measure the supply voltage to ensure none of the phases have failed. Measure the supply voltage to ensure it is not too low. In case of motor overload, reset the system. If the problem continues, contact your local dealer. Also, push the red button on the over-current relay inside the switch box and reset the controller.
D
Daniel WhiteAug 26, 2025
What causes the high-pressure switch to activate on my Daikin EWLQ014KBW1N Chiller?
- J
  Julie MooreAug 26, 2025
  If the high-pressure switch is activated on your Daikin Chiller, check that the condenser fan operates correctly and turns freely, clean if necessary. Remove any obstructions from the condenser and clean the coil using a brush and blower. Ensure the inlet air temperature of the condenser doesn't exceed 43°C. After pressure decrease, the high pressure switch resets automatically, but the controller still needs to be reset.
E
Erika MeyerAug 28, 2025
Why Daikin EWLQ014KBW1N Chiller doesn't start, but the L LED is flashing?
- K
  Keith IngramAug 28, 2025
  If your Daikin Chiller unit doesn't start, but the L LED is flashing, the flowstart timer may still be running. The unit will start after approximately 15 seconds, ensure water is flowing through the evaporator. Alternatively, the anti-recycling timer may be active, the circuit can only start up after approximately 6 minutes. It is also possible that the guard timer is active, the circuit can only start up after approximately 1 minute.
U
ubruceAug 31, 2025
What causes reverse phase protector to activate in Daikin EWLQ014KBW1N Chiller?
- G
  Gary DorseyAug 31, 2025
  If the reverse phase protector is activated on your Daikin Chiller, it might be because two phases of the power supply are connected incorrectly. Invert two phases of the power supply (this should be done by a licensed electrician). Also, check that each phase is properly connected. After correcting the phase issue, the protector resets automatically, but the unit still needs to be reset.
S
Shannon GreenSep 3, 2025
Why does my Daikin EWLQ014KBW1N Chiller stop soon after operation?
- M
  Michelle ThompsonSep 3, 2025
  If your Daikin Chiller stops shortly after starting, it could be due to a safety device activation. Check the safety devices. Another possibility is low voltage, so test the voltage in the supply panel and, if necessary, in the electrical compartment of the unit.
J
jamesconwaySep 5, 2025
What to do if discharge thermal protector is activated on Daikin EWLQ014KBW1N?
- L
  Lonnie AndersonSep 6, 2025
  If the discharge thermal protector is activated on your Daikin Chiller, the unit might be operating outside of its specified range. Check the operation condition of the unit. After temperature decrease, the thermal protector resets automatically but the controller still needs to be reset.
E
Elizabeth ElliottSep 8, 2025
Why Daikin Chiller runs continuously and water temperature remains higher than the set temperature?
- D
  David ReeseSep 8, 2025
  If your Daikin Chiller runs continuously and the water temperature stays higher than the controller setting, first, check and adjust the temperature setting on the controller. It's also possible that the heat production in the water circuit is too high, meaning the unit's cooling capacity is too low, so contact your local dealer. Finally, check if the water flow is too high and recalculate it if necessary.
A
Adam GilesSep 12, 2025
What does it mean if the flow switch is activated on Daikin Chiller?
- J
  Jonathan ParkSep 12, 2025
  If the flow switch is activated on your Daikin Chiller, it indicates that there is no water flow. Check the water pump. After addressing the cause, the flow switch will reset automatically, but you will still need to reset the controller.

Summary

Introduction

Technical specifications

Electrical specifications

Description

Function of the main components

Explanation of the function of key components like compressor, filter, expansion valve, and evaporator.

Safety devices

Details on safety devices like reverse phase protector, overcurrent relay, and high-pressure switch.

Internal wiring - Parts table

Before operation

Checks before initial start-up

Checks to perform before switching on the circuit breaker for the first time.

Water supply

Instructions for filling the water piping and ensuring water quality.

Power supply connection and crankcase heating

Procedure for connecting power and activating the crankcase heater.

Operation

Digital controller

Overview of the digital controller, its user interface, keys, and LEDs.

Working with the units

Guide to performing everyday tasks with the EWLQ units.

User interface

Keys provided on the controller

Explanation of the functions of the digital controller's keys and their combinations.

LEDs provided on the controller and remote interface

Description of LEDs indicating unit status like heating, cooling, alarms, and compressor activity.

Direct and user parameters

Introduction to direct and user parameters for unit configuration and operation.

Switching the unit on

Switching the unit off

How to consult and modify the direct parameters

How to consult the sensor readout menu parameters

Adjusting the cooling temperature setpoint

Consulting actual operational information

Resetting alarms

Resetting warnings

Advanced features of the digital controller

Overview of the direct and user parameters

List and description of all direct and user parameters accessible via the controller.

How to consult and modify the user parameters

Steps to access and modify user parameters using the controller, including password entry.

Defining the cooling temperature differential

How to adjust the cooling temperature differential parameter (-02).

Defining the heating temperature differential

How to adjust the heating temperature differential parameter (-04).

Tasks carried out using user parameters

Guide to defining measurement unit, time delays, and maintenance warnings.

Selecting local or remote cool;heat control

Selecting local or remote on;off control

Selecting dual setpoint control

Locking the controller keyboard

BMS CONNECTION MODBUS

General description of Modbus

Explanation of Modbus protocol and its role in BMS communication.

Implemented RS485 communication settings for the Modbus protocol

Details of RS485 settings like baud rate, stop bit, and parity for Modbus.

Implemented commands for the Modbus protocol

List of Modbus commands and their meanings for controlling the unit.

Data representation of the Modbus protocol

Explanation of how digital and analog data is represented in the Modbus protocol.

Implemented error code

List of implemented error codes for Modbus communication.

Defining the BMS setting

How to set BMS parameters like activating Modbus and unit serial address.

Activating the Modbus protocol

Defining the units serial address

Troubleshooting

Symptom 1: The unit does not start, but the LED lights up

Troubleshooting steps for when the unit doesn't start but the LED is lit.

Symptom 2: The unit does not start, but the LED is flashing

Troubleshooting steps for when the unit doesn't start but the LED is flashing.

Symptom 3: The unit does not start and the LED does not light up

Troubleshooting steps for when the unit doesn't start and the LED is off.

Symptom 4: One of the following safety devices is activated

Troubleshooting for activated safety devices like overcurrent, low pressure, high pressure.

Symptom 4.1: Overcurrent relay of compressor

Troubleshooting for the overcurrent relay fault on the compressor.

Symptom 4.2: Low pressure switch or anti-freeze alarm

Troubleshooting for low pressure switch activation or anti-freeze alarm.

Symptom 4.3: High-pressure switch

Troubleshooting for high-pressure switch activation.

Symptom 4.4: Reverse phase protector is activated

Troubleshooting for reverse phase protector activation.

Symptom 4.5: Discharge thermal protector is activated

Troubleshooting for discharge thermal protector activation.

Symptom 4.6: Flow switch is activated

Troubleshooting for flow switch activation.

Symptom 5: Unit stops soon after operation

Troubleshooting for the unit stopping shortly after starting operation.

Symptom 6: Unit runs continuously and the water temperature remains higher than the temperature set on the controller

Troubleshooting for continuous unit operation with high water temperature.

Symptom 7: Excessive noises and vibrations of the unit

Troubleshooting for excessive noises and vibrations from the unit.

Maintenance

Maintenance activities

Scheduled checks for wiring, power supply, internal wiring, earth, refrigerant, compressor, and water supply.

Disposal requirements

Guidelines for proper disposal of the unit, refrigerant, and oil.

Annex I

Saturated temperature

Graphs showing saturated temperature of R410A in relation to pressure.

Menu overview

Daikin EWLQ014KBW1N Specifications

General

Refrigerant	R-410A
Net Weight	120 kg
Cooling Capacity	14.0 kW
Type	Air-cooled
Power Supply	400V, 3 Phase, 50Hz

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