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Ten major brands of building intercom: common faults and maintenance methods of building video intercom
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Ten major brands of building intercom: common faults and maintenance methods of building video intercom

  • Categories:Industry News
  • Author:
  • Origin:
  • Time of issue:2018-10-12 08:00
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Ten major brands of building intercom: common faults and maintenance methods of building video intercom

(Summary description)Building intercom system with floor platform: first check whether the intercom host is normal (check the quality of the intercom host and the surrounding wiring), secondly check whether the power supply is normal (check the quality of the power supply and the surrounding wiring); finally check whether the platform on each floor is normal (Check the quality of the floor platform and the surrounding wiring);

  • Categories:Industry News
  • Author:
  • Origin:
  • Time of issue:2018-10-12 08:00
  • Views:
Information

1. Common faults of building intercom

   1. The whole system does not work

   Possible cause: Check whether the two indicator lights of the power supply are on;

  Whether the power supply connected to the host or video distributor is connected wrongly, or whether there is a short circuit;

   Treatment method: if the two lights of the power supply are off, it is not powered on, and the power cord is connected correctly;

   or the fuse connected to the 220 input line is burned out and needs to be replaced.

  (Remark:

A: Building intercom system with floor platform: first check whether the intercom host is normal (check the quality of the intercom host and the surrounding wiring), secondly check whether the power supply is normal (check the quality of the power supply and the surrounding wiring); finally check each floor platform Whether it is normal (check the quality of the floor platform and the surrounding wiring);

B: Building intercom system without floor platform: first check whether the intercom host is normal (check the quality of the intercom host and the surrounding wiring), secondly check whether the power supply is normal (check the quality of the power supply and the surrounding wiring); finally check each indoor extension Is it normal (check the quality of the indoor extension and the surrounding wiring), because the quality of the indoor extension of this type of system seriously affects the stability of the system;)

  2, intercom can be called, but no video

  Possible cause: Check whether the 18V visual power supply from the power supply to the indoor unit is connected wrongly through the circuit;

   Processing method: Correctly connect the power supply --- video distributor --- indoor unit power cord.

   (Note: first check the video cable of the indoor unit, then check the power supply, and finally consider the quality of the indoor extension)

  3. Call intercom is not allowed, the video can be turned on but there is no picture

   Possible reasons: check whether the power supply has 12V output, whether there is a 12V intercom power input on the VTO;

   Treatment method: If there is no 12V output, replace the fuse on the power control board, or replace the power supply;

   Correctly connect the power supply to the power cord between the door phone

   (Note: This type of fault is mainly concentrated on the line, followed by the quality of the building intercom equipment)

  4. The call has no ringing tone, but there are video images, which can be intercom

  Possible cause: Check whether the line from the door phone to the extension number 1 (note: the line label of each manufacturer is different) is connected, and the extension itself is normal, and the handset is hung up;

   Treatment method: replace a good extension to see if it is normal; if it is not, check if the wiring is correct;

   5. After inputting the floor number and room number of a certain household, the host has a ring back tone

   But the corresponding extension does not ring, the visual extension has no raster and no image

  Possible cause: The floor number of the decoder is not programmed, and the terminals on the decoder do not correspond to the corresponding room number;

  Processing method: code the decoder floor number according to the manual,

   and distinguish the room number represented by each terminal on the decoder: plug in the cable correctly.

   2. Common faults of building intercom-door cannot be opened

   1. All users cannot open the door

  Possible cause: Check whether the wiring from the VTO to the power supply and the VTO to the electric lock is connected properly;

Check whether the door opening circuit is connected (line 2 of the direct-press system, line 3 of the digital type) (the opening wire to the electric control lock is a 2-core wire, it is recommended to use a sheath wire of 0.5 square millimeters, and the marking of the opening wire is different Manufacturers are slightly different and there is no uniform standard);

   Treatment method: (First) correctly connect the transmission line according to the wiring diagram, (and on-site) use the password to open the door to open the door,

   If the electric lock can be opened, it is proved that the channel from the door phone to the electric lock (no problem), and the channel from the door phone to the power supply is normal;

  The main line to the decoder line cannot open the door (discussed below);

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