1, the cause of the current failure analysis

A first test is the compressor idling of the actual current value to confirm.

B, current transformers, thermal relays are adjusted too small or have quality problems of their own.

C, low voltage or too high causing the compressor current to be too high.

2, exhaust probe failure cause

The system refrigerant too little will cause the row temperature to be too high.

B, too much refrigerant system will also cause the exhaust temperature to be too high.

C, exhaust probe itself quality problems caused exhaust failure.

D, heat pump throttle device micro-blocking caused by high exhaust pressure caused by high exhaust temperature.

3, the cause of the high-voltage failure

A, if the maintenance of the heat pump, to check whether the refrigerant is too much, in the winter low-temperature time can not be shown, to the summer will cause excessive pressure caused by high-pressure protection.

B, circulating pump head and flow are too small not according to the company’s requirements.

C, the low water level probe is reasonable installation, the probe is higher than the circulating water port.

D, condenser (referred to as casing, high-efficiency irrigation, plate heat exchanger) in the scale generation caused by poor heat exchange caused by the system high pressure, generally caused by the use of groundwater.

E, tap water stop water pressure switch detection is not good also will cause high-voltage alarm.

4, the unit does not operate

A power failure, disconnect the power switch, check the power supply.

B, the power wiring of the unit is loose, find out the cause and repair.

C, the unit controls the power supply fuse, replaces the new fuse.

5, the pump is running but the water does not circulate or the pump noise is large

A water shortage in the water system, check the system rehydration device and rehydrate the system.

B, there is air in the system, remove air from the water system.

C, water system valves all open, the water system valve open enough.

D, water filter dirty block, cleaning water filter.

6, the unit heating capacity is low

An insufficient refrigerant, system leak detection, and filling refrigerant.

B, the water system insulation is not good, strengthen the water system insulation.

C, drying filter blocked, replace drying filter.

D, air heat exchanger heat dissipation is not good, cleaning air heat exchanger.

E, insufficient water flow, cleaning water filter.

7, the compressor does not run

A power failure, find out the cause to solve the power failure.

B, compressor contactor damage, replace the contactor.

C, loose wiring, identify loose points, and repair.

D, compressor overheat protection, find out the thermal cause to troubleshoot, and then power on.

E, the water temperature is too high, reset the water temperature.

F, insufficient water flow, cleaning water filter excludes air from the system.

8, compressor operation noise

Liquid preparations into the compressor, check the expansion valve is not working.

B, the internal parts of the compressor are damaged, replace the compressor.

9, the fan does not run

A fan fastening screws loose, fastening screws.

B, fan motor burned, change the fan.

C,contactor damage, replace contactor.

10, compressor operation, but the unit does not heat

A refrigerant all leak, system leak detection, and filling refrigerant.

B, compressor failure, replace the compressor.

11, water protection

There are generally two possibilities for water protection, the water system is not circulating and the flow switch itself is damaged, and the general cause of water flow failure is often waterway problems, specific exclusion methods:

12, the exhaust pressure is too high

A, too much refrigerant, drain excess refrigerant.

B, fluorine system has non-coagulant gas, discharge non-coagulant gas.

C, insufficient water flow, check the water system, increase the flow of water.

13, the suction pressure is too low

A, drying filter blocked, replace drying filter.

B, solenoid valve open, repair or replace solenoid valve.

C, the pressure drop through the heat exchanger is too large, check whether the thermal expansion valve is open properly

D, the heat pump system has no refrigerant or leakage.

13,line controller failure / black screen

A line controller black screen: first confirm that the unit has power, and then replace a new line controller try. Refrigeration Encyclopedic public tip, if still not bright after the focus on checking the unit motherboard w if there is no output, such as no output maybe the motherboard transformer damage or the motherboard fuse burned, replace one can, of course, this situation needs to be observed later, eliminate the short circuit of the load, to avoid secondary damage to accessories.

B, line controller communication failure: report communication failure check whether the wiring is false, if the not false connection is often a voltage problem, the focus of the measurement voltage is not normal.

C, the wired controller is not sensitive: it is just the use of the wired controller is not sensitive, it may be that the internal wiring may resist the keys, if the normal use of a period after the line controller keys are not sensitive, may need to be replaced.

14, open the trip

An empty open closed: replace an empty and ensure that the line is not false, if not possible compressor ground or the motherboard there is a short circuit after accurate judgment needs to replace the compressor or motherboard.

B, open occasional trip: often empty open line false connection caused, focus on checking whether the line is connected can be. Of course, if the air is open, it may be subject to moisture in places with high humidity causing tripping.