Acson international A5MAC 210D, Техническое руководство

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45
S/N Failure Code Symptom Possible Cause Solution
6
The LED indicator
of the unit displays
ER18 and the
wired controller
displays 18
Water pump motor
overloaded
Alarm for insufficient
water flow rate
Operating current of the water pump
motor is too high
1. Check whether the set value of the overload
protector current of the water pump is
correct according to the wiring diagram
2. Check whether resistance of the water
pump is abnormal .
7
The LED indicator
of the unit displays
ER19 and the
wired controller
displays 19
1. A smaller water pump is used.
The water filter is clogged.
Replace the pump.
2.
3. There is air trapped within the system.
Continue operate the water pump to clear
trapped air within the system.
4. The differential pressure switch
is blocked.
Overhaul or replace the differential pressure
switch.
5. The differential pressure switch
is damaged.
Replace the differential pressure switch.
6. The water system pressure is too high
or not balanced.
Optimize the water system.
7. Blockage within the water system. Check and troubleshoot accordingly.
8
The LED indicator
of the unit displays
ER20 and the
wired controller
displays 20
System 1 high
pressure
1. The motor is damaged (cooling).
Check and troubleshoot accordingly. 2. Air circulation is short circuited (cooling)
3. Heat exchanger is dirty (cooling).
4. The fluorine-side filter is clogged. Check and replace if needed.
5. Water temperature is too high (heating). Lower the water temperature setting.
6. Insufficient water flow rate (heating)
The water filter is clogged (heating).
Check and troubleshoot accordingly..
7.
8. Ambient temperature is too high.
(cooling)
Shut down the unit.
9. Excessive refrigerant is charged into
system
Recover and recharge according to the
nameplate.
10. Module high pressure port faulty. Replace the module.
11. The unit pressure switch is damaged. Replace the pressure switch.
9
The LED indicator
of the unit displays
ER21 and the
wired controller
displays 21
System 1 low
pressure
1. Poor heat exchanging performance
(heating).
Check the outdoor unit and troubleshoot
accordingly.
2. Outdoor fan motor have abnormality
(heating).
System is leaking refrigerant or
insufficient.
Check and troubleshoot accordingly.
Check for leakages. Recover and recharge
if needed.
3.
4. Low pressure input port faulty. Replace the module.
5. Low pressure sensor damaged. Replace the pressure sensor.
10
The LED indicator
of the unit displays
ER24 and the
wired controller
displays 24
System 2 high
pressure
1. Fan motor is damaged (cooling).
Check and troubleshoot accordingly. 2. Air circulation short circuited (cooling)
3. Heat exchanger is dirty (cooling).
The fluorine-side filter is clogged. 4. Check and replace if needed.
5. Water temperature is too high (heating). Lower the water temperature setting.
6. Insufficient water flow rate (heating).
The water filter is clogged (heating).
Check and troubleshoot accordingly.
7.
8. Ambient temperature is too high (cooling). Shut down the unit.
9. Refrigerant system is over charged.
Recover and recharge the system according
to the nameplate.
10. High pressure output port faulty. Replace the module.
11. The unit pressure switch is damaged. Replace the pressure switch.