• Code: H2-4100
• Display: Jam front of mailbox
• Description: Paper jam in IOT. Or Mailbox Lower Diverter operation is not working properly. Or IOT Deflector is damaged. Or Mailbox Entrance Sensor is not working (Mailbox Entrance Sensor Damaged, Harness connection loose, Main board is damaged)
• Remedy: 1) Check Jam Occurrence in IOT. 2) Check IOT Deflector part’s operation. 3) Check Mailbox Main Board Harness connection. 4) Check Mailbox Entrance operation & harness connection. 5) Refer to the Lower Diverter fault. 6) If the same problem happens after checking 1-5, Replace the mailbox main board. 7) If the same problem happens after checking 6, Replace the mailbox harnesses.

• Code: H2-4101, H2-4102
• Display: Jam inside mailbox
• Description: IOT Exit Roller grabs the paper. Paper exists covering Mailbox Entrance Sensor. Or Mailbox Feeding Motor Stops. Or Mailbox Entrance Sensor damaged or harness damaged. Or Mailbox Main Board damaged.
• Remedy: 1) Check Jam Occurrence in IOT. If the IOT roller is grabbing the paper, it’s IOT fault. 2) Check Mailbox Main Board Harness connection. 3) Check Mailbox Entrance operation & harness connection. 4) Check Mailbox Feeding Motor Harness connection and operation. 5) If the same problem happens after checking 1-4, replace the mailbox main board. 6) If the same problem happens after checking 5, replace the mailbox harnesses.

• Code: H2-4200, H2-4201, H2-4300
• Display: Jam front of bin # Jam at mailbox bin #
• Description: IOT Exit Roller grabs the paper. Or Mailbox Feeding Motor Stops. Or Mailbox Entrance Exit Sensor damaged or Mailbox Gate doesn’t work or harness damaged. Or Mailbox Main Board damaged.
• Remedy: 1) Check Jam Occurrence in IOT. - If the IOT roller is grabbing the paper, it’s IOT fault. 2) Check Mailbox Main Board Harness connection. 3) Check Mailbox Exit-related Sensors operation & harness connection. 4) Check Mailbox Feeding Motor Harness Connection and operation. 5) Referring to Upper Diverter Fault, check the Upper Diverter’s operation. 6) Referring to Lower Diverter Fault, check the Lower Diverter’s operation 7) If the same problem happens after checking 1-6, replace the mailbox main board. 8) If the same problem happens after checking 7, replace the mailbox harnesses.

• Code: H2-4202, H2-4302
• Display: Jam at mailbox bin #
• Description: Paper exists covering Mailbox Exit Sensor. Or Mailbox Exit Sensor is damaged or harness connection loose. Or Mailbox Main board is damaged.
• Remedy: 1) Check if there is a jammed paper on the feeding path of Mailbox. 2) Check Mailbox Main Board Harness connection. 3) Check Mailbox Bin1 Exit-related sensors’ operation & harness connection. 4) If the same problem happens after checking 1-3, replace the mailbox main board. 5) If the same problem happens after checking 4, replace the mailbox harnesses.

• Code: H2-4301, H2-4400, H2-4401
• Display: Jam front of bin # Jam at mailbox bin #
• Description: IOT Exit Roller grabs the paper. Or Mailbox Feeding Motor Stops. Or Mailbox Entrance Exit Sensor damaged or Mailbox Gate doesn’t work or harness damaged. Or Mailbox Main Board damaged.
• Remedy: 1) Check Jam Occurrence in IOT. - If the IOT roller is grabbing the paper, it’s IOT fault. 2) Check Mailbox Main Board Harness connection. 3) Check Mailbox Exit-related Sensors operation & harness connection. 4) Check Mailbox Feeding Motor Harness Connection and operation. 5) Referring to Upper Diverter Fault, check the Upper Diverter’s operation. 6) Referring to Lower Diverter Fault, check the Lower Diverter’s operation 7) If the same problem happens after checking 1-6, replace the mailbox main board. 8) If the same problem happens after checking 7, replace the mailbox harnesses.

• Code: H2-4402, H2-4502
• Display: Jam at mailbox bin #
• Description: Paper exists covering Mailbox Exit Sensor. Or Mailbox Exit Sensor is damaged or harness connection loose. Or Mailbox Main board is damaged.
• Remedy: 1) Check if there is a jammed paper on the feeding path of Mailbox. 2) Check Mailbox Main Board Harness connection. 3) Check Mailbox Bin1 Exit-related sensors’ operation & harness connection. 4) If the same problem happens after checking 1-3, replace the mailbox main board. 5) If the same problem happens after checking 4, replace the mailbox harnesses.

• Code: H2-4500, H2-4501
• Display: Jam front of bin # Jam at mailbox bin #
• Description: IOT Exit Roller grabs the paper. Or Mailbox Feeding Motor Stops. Or Mailbox Entrance Exit Sensor damaged or Mailbox Gate doesn’t work or harness damaged. Or Mailbox Main Board damaged.
• Remedy: 1) Check Jam Occurrence in IOT. - If the IOT roller is grabbing the paper, it’s IOT fault. 2) Check Mailbox Main Board Harness connection. 3) Check Mailbox Exit-related Sensors operation & harness connection. 4) Check Mailbox Feeding Motor Harness Connection and operation. 5) Referring to Upper Diverter Fault, check the Upper Diverter’s operation. 6) Referring to Lower Diverter Fault, check the Lower Diverter’s operation 7) If the same problem happens after checking 1-6, replace the mailbox main board. 8) If the same problem happens after checking 7, replace the mailbox harnesses.

• Code: H2-4700, H2-4701
• Display: Error: #H2-4700 / Mainbox Failure: #H2-4700. Check mailbox Error: #H2-4701 / Mainbox Failure: #H2-4701. Check mailbox
• Description: Upper Diverter Motor or Upper Diverter Sensor is not assembled properly or damaged. Harness is damaged. Main Board is damaged.
• Remedy: 1) Check Upper Diverter Motor harness connection. 2) Check Upper Diverter Sensor harness connection. 3) Check Mailbox Main Board harness connection. 4) Check Upper Diverter operation. 5) Check Mailbox Gate operation. 6) If the same problem happens after checking 1-5, replace the mailbox main board. 7) If the same problem happens after checking 6, replace the mailbox harnesses.