Typical Malfunction Solutions - Midea Aqua Tempto Power Series Manual

MCAC-ATSM-2014-09

3 Typical malfunction solutions

1) High pressure and discharged temperature protection
High
discharged protection.
High
protection.
Blower stops rotating or rotates in
reversed direction in cooling mode,
water pump is not open or the flow.
Couldn't start the EXV.
Pressure controller is broken
or the joint is loose.
Fin heat exchanger in cooling mode is too
dirty or aged, or too heavy encrustation in
shell and tube for heating.
EXV, capillary and filter are
dirty, blocking.
There is air and filled refrigerant
too much in system.(Generally
occur after maintenance.)
PCB mistakes to alarm.
Inform
service center.
pressure and
Yes
pressure
Yes
No
No
No
No
No
No
No
the customer
Aqua tempo power series tropical air-cooled scroll chiller 50Hz
No
Discharge temperature
protection.
Inspect fan motor and
Yes
capacitor (1phase)
start up the water pump.
Yes
Replace EXV or coil.
Yes
Replace press controller,
fixed joint.
Yes
Clean heat exchanger.
Yes
Replace EXV, capillary
and filter.
Empty, vacuuming and
Yes
append refrigerant if
necessary.
Check if it happened
Yes
frequently, if yes, please
replace PCB.
See the
Yes
discharge temp. protection
malfunction.
or
analysis of
147