Low Pressure Protection - Midea Aqua Tempo Super Series Technical & Service Manual

MCAC-ATSM-201606
Discharge
protection.
Discharge
switch is broken or joint
is loose.
Refrigerant is too less.
Couldn't open the EXV.
The EXV, capillary and filter
are dirty, blocked and ice
blocked.
PCB mistakes to alarm.
Inform
service center.

2) Low pressure protection

Low pressure protection.
Refrigerant is too less.
Couldn't open the EXV.
The EXV, capillary and filter are
dirty, blocked and ice blocked.
The pressure
broken or joint is loose.
Anti-freezing
protection.
Inform the customer service
center.
temperature
Yes
temperature
Yes
No
Yes
No
Yes
No
No Yes
No
Yes
No
the customer
Yes
Yes
No
Yes
No
Yes
No
Yes
controller is
No
Yes
lower pressure
No
Aqua Tempo Super Series air cooled scroll chiller unit (50Hz)
Replace discharge
temperature switch, fixed
joint.
Detect leakage for all
system, append
refrigerant.
Replace the EXV or coil.
Cause of dirty and
blocked, replace the
EXV, capillary and filter.
Vacuuming and append
refrigerant if ice blocked.
Check if happened
frequently, if yes, please
replace PCB.
Inspect leakage in system,
append refrigerant.
Replace the EXV and coil.
Cause of dirty and blocked,
replace the EXV, capillary and
filter. Vacuuming and append
refrigerant if ice blocked.
Replace the pressure controller,
fixed joint.
Inspect if the water flow is
normal, refer to the water flow
malfunction to analysis.
80