Midea MGC-F05W/N1 Manual page 55

MCAC-TSM-2008-02
2. Er01
High pressure＞4.4MPa, display Er01, compressor and outdoor fan stop, the chiller can only resume
from protection manually.
Refer to the instruction manual: High pressure protection
Judge 1: check the high pressure switch is well.
Judge 2: Whether the temperature of external and inlet water is high
Check the operation conditions:
1. the temperature of inlet water (cooling: below 20 ,
heating: below 45 )
2. cooling: the indoor temperature is ≥17
ambient temperature is 10℃～43℃
3. heating: the indoor temperature is ≤30
outdoor temperature is -15℃～24℃
Judge 3: Whether the refrigerant charge is excessive.
Check the temperature of compressor discharge and suction and
the pressure of compressor discharge and suction are normal.
Judge 4: Whether the air flow and water flow
are insufficient
Outdoor units
Values display indication Er01
Yes
℃
Yes
Yes
Yes
Judge 5: PCB is malfunction.
Replace PCB
No
Replace the high pressure switch
℃
No
and the
℃
and the
℃
No
Cooling: Check whether the speed of the fan
are normal. Heating: Check whether the water flow
volume can reach the data as follow :
Capacity Water flow
volume (m
( kW)
5 0.86
7 1.24
9 1.54
10 1.74
Change the fan or pump.
Outdoor units
Stop the operation, and run it
at the normal condition.
Reclaim part of refrigerant
Capacity Water flow
3
/h) volume (m
( kW)
10 1.72
12 2.0
14 2.4
16 2.8
No
3
/h)
53