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      Sapiens - How do you solve the error message “A20 chamber 1 burner alarm”?

      A20 Burner alarm cabinet 1 warns about a wrong/missing RPM signal from cabinet 1 blower.
      As consequence unit stops the burner function and related cooking.  

      This message requires the intervention of an  authorized technician; causes of the fault must  be investigated as per prescriptions.

      Description

      The blower is driven by the frequency signal generated by the gas plug-in; if, within a time  window, this signal is not corresponding with  frequency signal generated by the blower the  message appears. 

      Reset

      Error reset with a long press on the top bar of error  message window. 

      Checks

      Perform following checks: 

      1. Check basic conditions. 
      2. Check constant power supply to the blower (230V) 
      3. Check proper connection between blower and  plug in. 
      4. Check proper insertion of Gas Plug-In gas sulla  PCB I/O 
      5. Check from service level – burner management  – burner cabinet 1: 
        1. If blower spin and if not exchange it 
        2. If RPM settled have corrispondence ti gas  tables 
        3. If blower spin but do not reach settled RPM, check blower, power supply during spinning  and in case exchange it.
        4. If there is dust or somesing capable to  block/slowdown the system. 
      6. If after changing the blower issue will stay  change the gas plug-in. 
      7. If all checks are positive (1-5) and replacement  step 6 do not solve, change I/O PCB and  configure the system.