Effitherm AW11-V5+, Руководство пользователя, Страница: 88 / 92

The following phenomenon may not be problems of unit itself.
Please contact with a professional maintenance staff for help.
Number Failure Solution
The unit is not running
When the unit restarts, the compressor will start 3
minutes later (self-protection of compressor),
please check if the circuit breaker is disconnected,
and if there is normal power supply for the wire
controller.
1
Low capacity
Check if the air inlet or outlet is blocked in outdoor
unit; check if the setting temperature is too high in
cooling mode, or too low in heating mode.
2
Too high compressor
discharge pressure
1. Too much refrigerant
2. Air exists in refrigerantion
system
3. Inadequate water flow
4. Too high water temperature
1.Discharge all refrigerant and charge the unit again
with right amount.
2. Discharge all refrigerant and charge the unit again
with right amount.
3. Check the water flow of the system. Use a bigger
pump to increase the water flow if necessary.
4. Check the value of the water temperature sensor, to
ensure it works properly.
Too low suction
pressure
1. Drier filter is blocked
2. Electronic expansion valve
is not opened
3. Leakage of refrigerant
1. Change a new one
2. Repair or change a new one
3.Inspect the unit for leakage and fix it if any.
Discharge all refrigerant and charge the unit again with
right amount.
Unit can not defrost
properly
1. Coil temperature sensor
failure
2. Air inlet/outlet is blocked
1. Check the position and value of the coil temperature
sensor. Replace it if necessary.
2.Remove any object that blocks the air circulation of
the unit. Clean the evaporator coil occasionally.
Too high noise
from the water
pump, or no
water flow
when the water pump
is running
1. Lacking of water in water
system
2. Air exists in water system
3. Valves in water system are
not completely opened
1. Check the water filling device. Fill the system with
enough water.
2. Purging the air out.
3. Check all the valves to ensure they are fully opened.
4. Clean the water filter
4. Water filter is dirty or blocked
4
Service and maintence
4. Troubleshooting
1
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