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CARRIER INVERTER AIR CONDITIONER ERROR CODES

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Error Code Outdoor Light Flash times Description OUTDOOR    FAULT F4 1       Outdoor EEPROM fault E1 2 Indoor to Outdoor communication fault P4 4 Compressor starting abnormal P4 5 Compressor out-of-step abnormal P0 6 IPM module fault P2 7 Compressor shell   temperature overheat protection F3 8 Compressor discharge temperature overheat protection F8 9 Compressor suction temperature sensor fault F2 10 Outdoor condenser temperature sensor fault F1 11 Outdoor ambient temperature sensor fault F5 12 Outdoor DC fan motor fault L3 33 Drive phase current overload fault L4
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EC ERROR IN AIR CONDITIONER

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 Nowadays, many Air Conditioners of various companies show  EC, E6, E4 errors. According to the companies Error code booklet, these errors are of a shortage of Refrigerant(Gas). EC error doesn't appear directly after turning ON the Air Conditioner, it takes time nearly about 30 - 40 minutes. During this time period, the AC compressor turns OFF almost 3-5 times and after it turns ON and OFF then the error appears.  Those technicians who encountered these kinds of errors said that after a proper balancing of the backpressure of the gas and proper working of the Air Conditioner(cooling ) then also the Error doesn't go off.  Causes of the error: If the Air Conditioner is installed by the Unskilled or Newly joined technician then this problem arises as the New or Unskilled Technician may not have followed the guidelines on how to install the Air Conditioner properly and by not taking preventive measures.  The technicians who are new to this field may not take preventive measures as
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 ARC Welding Machine Control Board This is a Welding Machine Control Card. Type ZX7200-01-A1 In this, we will describe the Functioning of the components and the connection of Pins. It is a simple control board that can be easily installed in any kind of welding machine either it is MOSFET based or IGBT based. control board repairing video This board operates with two ICs. 1.    UC3525-- It is a 16 pin Regulating Pulse Width Modulator. Its Oscillating range         is from 100Hz to 500 kHz. Input voltage 8V to 35V. There are many ways to use         this IC (UC3525) in different kinds of circuits but we will describe the way which is used in this circuit according to Pins.           Pin no. 2 and 16 are Vref pins.          Pin no. 1, 10, and 12 are grounded in this circuit.       Pin no. 3 and 4 are NC (not connected).        Pin no. 5, 6, and 7 are Oscillator pins.          Pin no. 8 is Soft-Start Pin but it is used for Overcurrent safety purposes.       Pin no. 9 is used for
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IFB Door Lock Error ( part 1.)

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  A  Washing Machine  is a widely used common home appliance all over the world. Fully automatic  Washing machines can detect an error in any part and show on the error code on the display.  The error codes are different for every brand.now we will explain an error about door lock in the IFB  washing machine  so first, we have to know about the wiring of the PCB. you can see in the picture  (figure A) there are three connectors for connections  There is a door switch connector that has four-wire and each wire has a different color.  Red, Black, Gray, Pink.  We have to deal with these colored wires except red wire. Like these, there are three pins in the door  lock switch.  Black wire --- Pin number 1 (Left side according to figure B) Gray wire  --- Pin number 2 (Right side) Pink wire   --- Pin number 3 (Centre) Figure A There are three terminals on the switch Figure B                                                                                                                       
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