Three reasons for the low efficiency of the heater
First, check whether the voltage in the range of unit rated run, if the voltage is no problem, just view compressor is functioning properly excluded the fan idling caused the illusion of unit operation. Next, reconfirm whether the water consumption match with the unit oif commercial heat pump water heater. Further check whether the control system sensors are in the good condition and make further exclusion.
Second, as the temperature is too low, the unit will not work, which cannot start. When the temperature is below 0 ° C, the air source heat pump water heater will enter the shutdown state, and when the temperature rises, the unit still cannot start properly, or rotating fans, but the compressor does not work.
Third, the work of unit is controlled by the controller, such as crew has worked for long hours, but did not reach down parameters set by the system, or the probe temperature is below the set range of values when the unit open work. Troubleshooting a refrigerant portable low thermal capacity and high set temperature, and then the temperature sensor failure or sensor short circuit, open circuit may cause the unit to shut down. Generally, the reason that leads to the long work hours of the air source low temperature heat pumpswater heater is the unreasonable ratio of the unit. For example, if the water of the unit is three tons, and the longest working hours of the design is 18 hours.
Solutions for the low efficiency of heat pump heater
First, check whether the compressor is damaged, and check the compressor resistance with multimeter, and focus on the examination of the control system. theHen the control unit factory description or engineering system design and inspection reports, based on the analysis of inspection circuit, waterways, temperature setting parameters and measured data, to identify the non-conformity and the corresponding corrections. When use the solenoid valve control the volume of water, checking the water level sensor sensitivity and the size of the water pressure, and determine that it is not the problem of the water level data.
Second, the control system determines the running of unit, and the system cannot be started without collecting the signal, because the unit open is jointly controlled by the temperature of the heat exchanger and the three parameters of the header tank temperature and set temperature. When the collected water tank temperature is below a certain value of the set temperature, the unit starts collector part of the water temperature is higher than a certain value of the storage tank temperature, when the collector tank temperature cannot collect the data, the unit will not start for the self-protection.
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