To Next PageTo Next PageWhat does it mean when my Midea Chiller shows 'Cooling Entering Water Temperature Sensor Failure'?
If your Midea Chiller displays a 'Cooling Entering Water Temperature Sensor Failure', it could be due to: * Failure of the temperature sensor. * Incorrect wiring connection. * Abnormal or damaged wiring line. To resolve this, reset it manually on the touch screen.
What causes low-pressure protection in a Midea Chiller?
If your Midea Chiller is experiencing low-pressure protection, it could be due to: * Insufficient refrigerant. * A malfunctioning EXV. * A too-short delay time for the low-pressure switch alarm. * A clogged filter. * Water in the refrigerant system within the evaporator. * Poor system matching (undersized evaporator or oversized compressor). * Excessive oil in the system. * Insufficient chilled water flow or excessively low temperature. To resolve this, reset it manually on the touch screen.
What to do if my Midea Chiller shows a water flow fault?
If your Midea Chiller displays a water flow fault, it could be due to: * Failure of the water pump, resulting in insufficient water flow. * Failure of the water flow switch or incorrect wiring connection. To resolve this, power off the unit, restore power, and then reset it manually on the touch screen.
Why does my Midea Chiller have compressor overload protection?
Compressor overload protection in your Midea Chiller can be triggered by: * The compressor running continuously under unfavorable conditions like over-current. * A thermal relay setting value that is too low. To fix this, reset it manually on the touch screen.
How to troubleshoot high discharge temperature protection on a Midea Chiller?
High discharge temperature protection in your Midea Chiller can occur due to: * Excessive superheat (insufficient refrigerant, EXV failure). * High discharge pressure. * Low oil level and insufficient oil volume. * Operation under poor conditions with a high compression ratio and no auxiliary cooling. * Damaged bearings or screws. * Poor system matching. This protection is automatically relieved once the discharge temperature falls below the set value. Reset it manually on the touch screen.
How to fix power failure protection on a Midea Chiller?
If your Midea Chiller is showing a power failure protection error, it's likely because the power quality is poor due to phase inversion, missing a phase, or phase imbalance. To resolve this, reset it manually on the touch screen.
Why is my Midea Chiller showing high cooling entering water temperature protection?
High cooling entering water temperature protection in your Midea Chiller can occur if: * The cooling tower cannot work normally. * The cooling water flow is insufficient. In this case, the compressor will stop running immediately.
What does it mean when my Midea Chiller shows 'Chilled Leaving Water Temperature Sensor Failure'?
If your Midea Chiller displays a 'Chilled Leaving Water Temperature Sensor Failure', it could be due to: * Failure of the temperature sensor. * Incorrect wiring connection. * Abnormal or damaged wiring line. To resolve this, reset it manually on the touch screen.
What does it mean when my Midea Chiller shows 'Cooling Leaving Water Temperature Sensor Failure'?
If your Midea Chiller displays a 'Cooling Leaving Water Temperature Sensor Failure', it could be due to: * Failure of the temperature sensor. * Incorrect wiring connection. * Abnormal or damaged wiring line. To resolve this, reset it manually on the touch screen.
Why is contactor protection activated in my Midea Chiller?
Contactor protection in your Midea Chiller can be caused by: * Abnormal contactor suction during the switch from Y type to ? type. * Vibration during operation causing the contact to loosen. To resolve this, reset manually on the touch screen.
Guidelines for safe unit installation by authorized personnel.
Safety measures for engineers during maintenance operations.
Safety guidelines for performing repairs on the unit.
Details on available models and naming conventions.
Highlights of efficiency, design, evaporator, condenser, and oil system.
Dimensional drawings and data for single and dual head units.
Schematics for single and dual compressor refrigeration systems.
Detailed description of key components like the screw compressor.
Information on pressure vessel monitoring, repair, and safety.
Table of water flow rates and pressure drop curves.
Formula and example for calculating minimum system water volume.
Defines acceptable ranges for unit operating parameters.
Lists standard and optional accessories with their functions.
Diagram of control logic and capacity adjustment methods.
Procedures for starting/stopping and details on temperature/pressure sensors.
Control logic for oil heaters, pressure sensors, and EXV controller.
Navigating the interface, status displays, and mode settings.
Procedures for startup, shutdown, protection states, and alarms.
Specifications and description of key electrical parts.
Setting electrical parameters and field wiring instructions.
Detailed schematics and connectivity options.
Procedures for lifting the unit and preparing the foundation.
Guidelines for water quality, piping, and system design.
General precautions and specifics for wiring the unit.
Checklist for electrical and refrigeration system inspections before start-up.
Procedures and parameters to inspect during unit start-up.
Routine checks, startup, shutdown, and basic maintenance.
Guidelines for visual inspection, component checks, and cleaning.
Procedures for cleaning heat exchangers and checking systems.
Table of protection mechanisms, their purposes, and possible causes.
Common alarms, trouble descriptions, actions, and possible causes.
Resistance values for discharge, water, ambient, oil, and EXV sensors.
System description, quality assurance, and equipment specifications.
General