Midea Aqua Tempo Super II Series Technical & Service Manual page 37

Aqua Tempo Super II Series DC Inverter Air-cooled chiller unit (50Hz)
Short circuit comes out from motor or connecting
interface.
Over high or over low voltage.
Compressor stops
because of integrate
Over high air discharging pressure or excessive low
temperature sensor or
air suction pressure.
air discharge
temperature protection.
Component error.
Filter of electronic expanding valve is blocked.
Compressor stops
Low voltage switch error.
because of low pressure
protection.
Excessive low air suction pressure.
Liquid refrigerant flows into compressor from
evaporator result in liquid slugging.
Abnormal noise gives
out form compressor.
Aging of compressor.
Over current relay trip up, fuse burnt out.
Control circuit without power though.
High voltage or low voltage protection.
Coils inside contactor are burnt out.
Compressor can't start.
Wrong connection of phase sequence.
Water system error and flow volume controller short
connection.
Error signal delivered from wired controller.
4-way valve or thermal resistor error.
Air side heat exchanger
excessive frost.
Air loop short circuit.
With noise. Fixing screws at panel are loosen.
Confirm resistors at motor are connected
corresponding to terminals.
Confirm voltage not higher or lower than the rated
voltage +/-10%.
Adjust refrigerant charge volume.
Clean the heat exchanger.
Check the EXV, capillary, filter.
Check the integrated temperature sensor after
motor is cool down.
Replace a new filter.
If the switch is defective, please replace a new
one.
Add the refrigerant.
Clean the heat exchanger.
Check the EXV, capillary, filter.
Adjust refrigerant charge volume.
Replace a new compressor.
Replace damaged assembly.
Check the wring of control system.
Reference to mention in above the parts of air
suction and discharge pressure error.
Replace damaged assembly.
Re-connect and adjust the any 2 wires among 3
phases.
Check water system.
Find out the error type and carry out the
corresponding measure to settle.
Check the running state. Replace a new one if
necessary.
Settle the short circuit of air discharge.
Fix up all assemblies.
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MCAC-ATSM-201704