Possible outcomes once you use the checklist

• P1 Smart meter defective.
  Grid operator should fix this.

• P1 cable, installation fault
  Installer should replace the connectors or cable. Otherwise, a local installer or Chargepoint Operator (CPO) should send someone to solve the problem.

• Charger malfunction
  Please contact your CPO for further assistance.

Checklist to determine the cause of a P1 error

1. Determine the error type
   There are two important features to check in the diagnostic log.

   1. Cannot start P1 communication.
      Follow steps from the checklist to localize cause.
      An error 209 appears in the log and is reported as an event in the back office.

      

      Error 209 is not shown on the chargers display.

      Because charge-power drops back to safe current, it will also be noticeable in the charge rate.

   2. Timeout error or CRC error

      

      CRC error= checksum error. Data is received but is corrupted or information is missing

      After a number of CRC errors, the charge-power falls back into safe current mode and error 209 appears. This can be restored when communication with P1 is also restored.
      Check for bad cables, cables longer than 20m or possible P1 extender/splitter issues.

2. Does the P1 smart meter comply with DSMR4.0 or ESMR 5.0 protocol?

   1. Check whether you can find the protocol used on the front of the meter.

      

   2. Check the type of meter on the internet. Sometimes more product information can be found this way.

3. Check P1 cable length, max 20 meters.
   Measure, make a best estimate or perhaps a local contact can provide this info.
   When cable length of P1 cable is >20 meters. Then a P1 extender might be a solution.

4. Is the order of the colored wires identical on both sides so that the P1 cable is straight and not twisted?
   Look at both plugs side by side, the colors should have the same order from left to right.
   4-pole (RJ11) recommended.

   Note!!! This only applies to the P1 cable.
   Cables between P1 extender boxes (incoming from smart meter and outgoing to charger) may have a different type of connection.
   Example of a good connection.

   

5. Are P1 splitters used on site?
   Some splitters do not work. If possible, temporarily remove the splitter and let the P1 connect directly.

6. If possible, temporarily use a separate P1 cable (max. 20m) that bypasses the current P1 installation.
   Bring your own pre-assembled cable, measuring is one thing but doesn't say everything. If you bypass local installation, you should be able to rule out an installation problem.
   
   Please be aware that you will need tools for the next steps!
   
    

7. Are P1 extenders being used?
   Test the individual cable sections, starting with P1 meter.
   Network cable testers often offer capabilities to measure through RJ45, RJ11 and RJ12. 

   1. Measure the P1 signal directly on the smart meter. 

   2. Check the P1 cable between the smart meter and the first extender box. This should be the same as checking a full P1 cable.
      Test can be done with P1 test tool. read user manual of used meter before use

   3. Check that all connections are made correctly on the P1 extender box. in/out etc.
      RJ11 (4-pin) , sometimes extender box needs power supply, then 6-pin RJ12 might be needed.

   4. If possible, check this cable with an RJ45 network cable tester
      There are also extenders that work with 2-wire connection. Try to determine if those make good contact
      Check mainly that connectors are properly pinched and no wires are swapped.

   5. Check the P1 signal on the output of the second P1 extender box

   6. Check the P1 cable between the extender box and the connection to the charger. This should be the same as checking a full P1 cable.
      From extender box to charger.
      RJ11 (4-pole) recommendation.

   7. Check the controller board of the charger.