Midea MGC-F05W/N1, Руководство пользователя

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Specification MCAC-TSM-2008-02
54 Installation
3. Low pressure protection (code: Er05)
Low pressure<0.15MPa, display Er05, compressor and outdoor fan stop; Low pressure>0.3MPa,
compressor and outdoor fan restart
（
3 minutes delay necessary
）
If Er05 appears 3 times in 1hour, the chiller can only resume from protection manually.
Values display indication
Er05
Refer to the instruction manual: Low pressure protection
Judge 1: check the low pressure switch is well. Replace the low pressure switch
No
Judge 2: Whether the temperature of external and inlet water is low
Yes
Check the operation conditions:
1. the temperature of inlet water (cooling: below 20 ,
℃
heating: below 45 ) ℃
2. cooling: the indoor temperature is ≥ 17 and the
℃
ambient temperature is 10
℃ ～
43
℃
3. heating: the indoor temperature is ≤ 30 and the
℃
outdoor temperature is -15
℃ ～
24
℃
Stop the operation, and run it
at the normal condition.
No
Yes
Judge 3: Whether the air is in water circuit.
Yes
Recharge the refrigerant
No
Judge 3: Whether the refrigerant charge is abundant.
Check the temperature of compressor discharge and
suction and the pressure of compressor discharge and
suction are normal.
Recharge the refrigerant
No
Yes
Judge 5: PCB is malfunction.
Replace PCB