Haier 1U50KEFFRA-1 Service Manual

Also see for 1U50KEFFRA-1: Service manual Instruction manual Installation manual Installation manual

Functions and control15 Domestic air conditioner7. Functions and control7.1 Main functions and control specification7.1.1 The operation frequency of outdoor unit and its control7.1.1.1 The operation frequency control of compressorThe operation frequency scope of compressorMode Minimum operation frequency Maximum operation frequencyHeating 09K 30Hz 75HzRefrigeration 09K7.1.1.2 The starting of compressorWhen the compressor is started for the first time, it must be kept under the conditions of38Hz,58Hz,88Hz for 30second,one minute, one minute (the overheating protection of the outdoor unitair-blowing temperature, immediately decrease the frequency when the compressor is overflowing andreleasing the pressure) then it can be operated towards the target frequency. When the machine runsnormally, there’s no such process. After starting the compressor for operation, the compressor shouldrun according to the calculated frequency, and every determined frequency for protection should beprior to the calculated frequency.7.1.1.3 The speeds of increasing or decreasing the frequency of the compressorThe speed of increasing or decreasing the frequency rapidly 1 -----------1HZ/secondThe speed of increasing or decreasing the frequency slowly 2 -----------1HZ/10seconds7.1.1.4 The calculation of the compressor’s frequencyRefrigeration/dehumidification mode:Pn=(Nh_c- S_c)*10 50 outdoor environment controlPn=(Nh_c- S_c) *10 50 PID controlHeating mode:Pn=(S_c -Nh_c) *10 60 outdoor environment controlPn=(S_c -Nh_c) *10 60 PID control(Nh_c=indoor environment temperature S_c=setting temperature)1 The minimum/maximum frequency limitationA While refrigerating: F-MAX-r is the maximum operation frequency of the compressor; F-MIN-r is theminimum operation frequency of the compressor.B While heating: F-MAX-d is the maximum operation frequency of the compressor; F-MIN-d is theminimum operation frequency of the compressor.2 The frequency limitation which is affected by the environment temperature.(Wh_c= environment temperature)Heating mode:Serial No. Temperature scope Frequency limitation 09K1 Wh_c<-12 Max_hz1 99HZ2 Wh_c<-8 Max_hz2 99HZ30Hz 99 Hz