How to fix liquid hammer in the compressor of my Danfoss Controller?
Liquid hammer in the compressor of your Danfoss Controller can be caused by: * Superheat of expansion valve being too low: Increase the values of SH close and SH min. * Superheat reference set too low: Increase the value of SH min. * The S2 sensor not in good contact with the suction line: Ensure that the S2 sensor is secured on the suction line and insulate the sensor.
What to do if all the light emitting diodes are flashing on my Danfoss EKC 316A?
If all the light emitting diodes are flashing on your Danfoss Controller, there could be several reasons: * The S2 sensor might be cut-out or short-circuited: Check the connections at terminals 18-19 and the sensor. * The S3 sensor might be cut-out or short-circuited: Check the connections at terminals 18-20 and the sensor. * The pressure transmitter might be outside of its range: Inspect the pressure transmitter, the connections at 14-15, and the pressure. * There may be a High Temperature alarm: Verify that the cooling system is working effectively and check the thermostat relay at terminals 8-9. * There may be a Low Temperature alarm: Check that the ETS valve is fully open and the relay at terminals 8-9. * No refrigerant may be selected: Select a refrigerant. * There may ...
Why is the suction pressure too low on my Danfoss EKC 316A?
A low suction pressure on your Danfoss Controller can be caused by several factors: * The pressure drop across the evaporator may be too high. * There might be a lack of subcooling ahead of the expansion valve: Inspect the refrigerant ahead of the expansion valve. If the valve is placed much higher than the condenser outlet, check the pressure difference. * The evaporator superheat may be too high: Check the superheat performance, including the SH min and SH max settings. Also, check the valve capacity and ensure that the maximum number of valve steps matches parameter n37. * The pressure drop across the expansion valve might be less than what the valve is sized for: Check the pressure drop across the expansion valve and replace it with a larger valve if necessary. * The expansi...
Details the mandatory electrical connections for the controller's basic functionality.
Outlines connections tailored for specific application requirements and features.
Explains the controller's display settings and the function of front panel LEDs.
Details how to use the controller's buttons for menu access and setting changes.
Provides step-by-step guides for common user operations and settings.
Covers controller addressing and the function of the ON/OFF switch.
Details how to define input signals for the analog input (AIA).
Outlines the steps required before the controller regulation can begin.
Provides guidance for diagnosing and resolving superheating fluctuations.
Explains the ETS valve's response when controller supply voltage is interrupted.
General| Type | Electronic controller |
|---|---|
| Number of Inputs | 2 |
| Number of Relays | 3 |
| Relay Output | SPDT |
| Display | LCD |
| Enclosure Rating | IP20 |
| Protection Class | II |
| Power Supply | 24 V AC/DC |
| Sensor Type | Pt1000 |
| Control Type | On/Off |
| Control Functions | Temperature control, defrost control |
| Inputs | Digital input |
| Outputs | relay |
| Storage Temperature | -40 to +70 °C |
| Application | Heating, ventilation, and air conditioning (HVAC) |
| Relative Humidity | 5% to 95% (non-condensing) |
To Next Page
