2. Note
1.1 Check whether the exhaust equipment is normal. Avoid cutting of the water supply and or air entering
into the system or it will influence the performance and reliability of the unit. The water filter should
be cleaned regularly. Keep the water clean in case of any damage to the unit due to filter's dirty and jam.
1.2 Keep the unit environment dry, clean and well ventilation. Clean the side air exchanger regularly(once
per1-2 months) in order to maintain high exchange efficiency and save energy.
1.3 Often check the performance of all the parts in the unit. Check whether the working pressure of the
refrigerant system is normal. Repair and change the parts timely if there's any abnormity.
1.4 Often check whether the wiring of the power and electric system is tightened and or electric parts
perform abnormally or smells. Repair and change the parts timely if there's any abnormity.
1.5 Care the unit if the unit stops for a long time. Discharge all the water in the pump and throughout the
pipe route in case breakdown to the water pump and pipe caused by frost and freeze. Discharge the
water from the water pump and tube exchange Button drain. Check the unit thoroughly and flood
water into the system before the unit power on again.
1.6 To check the operation of every process in the unit, the operation pressure of the refrigerant system.
You should maintain or change it in time.
1.7 To check the power supply and cable connection often, there is abnormal action or bad smell about
the electrical component. If there is, please maintain or change it in time.
3.Determine and solve malfunction by below table:
1.Power failures
2. The unit wire loses
3. The unit power fuse burns out.
1. Shut down and check the power
2.Check the reason and repair
3.Check and change the power fuse
The water pump
can run but can't
circulate and is
noisy
1. The water system is lack of water
2. There's air in the system.
3. The water system valve doesn't open
entirely
4. The water filter is dirty and jam
1.Check the water supplement equipment and
supply water into the system.
2.Exhaust the air from the water system
3.Clean the water filter or exhaust the air from system
4.Clean the water filter
The cooling
capacity is too low
and the compressor
works continuously
without pause.
1.
Refrigerant is insufficient
2.
Thermal insulation of the water system is
poor
3.
Thermal discharge of the exchange is poor
4.
Water flow volume is insufficient
1.Check the leakage and add refrigerant
2.Enhance the thermal insulation of the pipe route
3.Clean the exchanger and improve the condensation
condition
4. Clean the water filter
The compressor
discharge pressure
is too high
1.
Too much refrigerant
2.
Thermal discharge of the exchange is poor
1.
Discharge surplus refrigerant
2.
Clean the exchanger and improve the condensation
condition
The compressor
suction pressure is
too low
1. Refrigerant is insufficient
2. The filter and or capillary tube jam
3. Water flow volume is insufficient
4. Capillary tube of expansion valve sensor
bulb breakdown
1.Check the leakage and add refrigerant
2.Change the capillary tube or filter
3.Clean the exchanger and improve the condensation
condition
4.Change the expansion valve
1.Refrigerant enter into the compressor
2.Compressor damaged
1.Check the reason and solve the malfunction
2.Change the compressor
1. Power failure
2. Compressor Control damaged
3. Wire loses
4. Compressor overload protection
5. Return water temperature setting incorrect
6. Water flow volume is insufficient
1.Check the power and solve the malfunction
2.Change Control
3. Check loose reason and repair
4. Compressor overload protection
5. Reset the return water temperature
6. Clean the water filer and exhaust the air from the
system
1 Fan relay damaged
2.Motor is burnt out
1. Change the fan relay
2. Change the fan motor
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