To Next PageTo Next PageWhy is the air side heat exchanger in my Midea MGB-D30W/RN1 excessively frosted?
Excessive frost on the air side heat exchanger can be due to a faulty 4-way valve or thermal resistor (check and replace if needed) or an air loop short-circuit (resolve the short-circuit).
How to fix over low air discharge pressure in Midea MGB-D30W/RN1 (Heating operation)?
Low air discharge pressure during heating may be caused by low chilling water temperature (check it) or refrigerant leakage or insufficient refrigerant volume (test for leaks and recharge). If the air suction pressure is too low, see the section on “Excessive low air suction pressure”.
What to do if my Midea MGB-D30W/RN1 compressor can’t start?
If the compressor won't start, check for a tripped overcurrent relay or burnt fuse (replace), power to the control circuit (check wiring), high or low voltage protection (refer to air suction and discharge pressure error sections), burnt contactor coils (replace), incorrect phase sequence (reconnect any two of the three phases), water system error or shorted flow-type volume controller (check water system), or error signals from the wire controller (identify and address the error).
What to do if my Midea MGB-D30W/RN1 Chiller compressor stops because of integrate temperature sensor or air discharge temperature protection?
If the compressor stops due to the integrated temperature sensor or air discharge temperature protection, check for high or low voltage (ensure it's within 20V of the rated voltage), high air expelling pressure or low air suction pressure (refer to those sections), or a component error (check the integrated temperature sensor after the motor cools down).
What causes over low air suction pressure in Midea MGB-D30W/RN1 Chiller (Heating operation)?
Low air suction pressure during heating can result from insufficient refrigerant (charge the system), insufficient air flow (check fan direction), an air loop short-circuit (remove the short-circuit), or insufficient frost-removal (replace the 4-way valve or thermal resistor if necessary).
What could cause abnormal noise from the compressor in my Midea MGB-D30W/RN1?
Abnormal compressor noise can be due to liquid refrigerant entering the compressor from the evaporator, causing liquid slugging (adjust refrigerant charge), or the compressor aging (replace the compressor).
Lists product specifications and capacities.
Explains the flexible modular design and combination capabilities.
Lists chiller models with their cooling capacity in kW and Btu/h.
Details the heating capacity of the chiller units.
Specifies voltage, phase, frequency, manual switch, and fuse.
Information on compressor type, quantity, model, brand, capacity, input.
Details cooling and heating power input and current ratings.
Specifies refrigerant type and control method.
Describes air-side heat exchanger type and fan specifications.
Details water-side heat exchanger and pipeline specifications.
Provides net and packing dimensions in mm and inch.
Provides dimensional drawings and data for 25/30KW modules.
Dimensional drawings and data for 55/60/65KW modules.
Dimensional drawings and data for the 130KW module.
Dimensional drawings and data for the 185KW module.
Dimensional drawings and data for the 250KW module.
General wiring diagram for the chiller unit.
Lists chiller models with their electrical characteristics.
Electrical supply and outdoor unit parameters.
Details compressor electrical specifications like TOCA, MFA, LRA, RLA, KW, FLA.
Cooling capacity data for MGB-F(D)25W/RN1 model.
Heating capacity data for MGB-F(D)25W/RN1 model.
Cooling capacity data for MGB-F(D)30W/RN1 model.
Heating capacity data for MGB-F(D)30W/RN1 model.
Cooling capacity data for MGB-F55W/RN1 model.
Heating capacity data for MGB-F55W/RN1 model.
Cooling capacity data for MGB-F60W/RN1 model.
Heating capacity data for MGB-F60W/RN1 model.
Cooling capacity data for MGB-F65W/RN1 and MGB-D65W/RN1.
Heating capacity data for MGB-F65W/RN1 and MGB-D65W/RN1.
Cooling capacity data for MGB-F130W/RN1 model.
Heating capacity data for MGB-F130W/RN1 model.
Cooling capacity data for MGB-F185W/RN1 model.
Heating capacity data for MGB-F185W/RN1 model.
Cooling capacity data for MGBT-F250W/RN1 model.
Heating capacity data for MGBT-F250W/RN1 model.
Lists fault and protection codes for the chiller modules.
Lists common troubles and their corresponding solutions.
General guidelines and procedures for installing the unit.
Guidelines for installing the water system.
Instructions for performing wiring installation.
Safety precautions for wiring installation.
Detailed power supply specifications for various models.
Step-by-step instructions for wiring the unit.
Steps for preparing the unit before commissioning.
Procedures for conducting a test run on the unit.
Routine maintenance procedures for key components.
Checks and procedures for the refrigeration system.
Overview and description of the main control PCB.
General