• Code: H2-4400
• Display: Paper jam in front of bin 3. Remove paper
• Description: Mailbox Bin 3 Exit Sensor doesn’t turn on after a paper entered Mailbox. 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: H2-4401
• Display: Paper jam at mailbox bin 3. Remove paper
• Description: Mailbox Bin 3 Exit Sensor doesn’t turn off after the sensor turned on. 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
• Display: Paper jam at mailbox bin 3. Remove paper
• Description: Initialization started with Jammed paper covering Mailbox Bin3 Exit Sensor. Paper exists covering Mailbox Exit Sensor. Or Mailbox Exit Sensor Damaged or harness connection not well. Or Mailbox Main Board 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 Bin3 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
• Display: Paper jam in front of bin 4. Remove paper
• Description: Mailbox Bin 4 Exit Sensor doesn’t turn on after a paper entered Mailbox. 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 is 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: H2-4501
• Display: Paper jam at mailbox bin 4. Remove paper
• Description: Mailbox Bin 4 Exit Sensor doesn’t turn off after the sensor turned on. 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: H2-4502
• Display: Paper jam at mailbox bin 4. Remove paper
• Description: Initialization started with Jammed paper covering Mailbox Bin4 Exit Sensor. Paper exists covering Mailbox Exit Sensor. Or Mailbox Exit Sensor Damaged or harness connection not well. Or Mailbox Main Board 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 Bin4 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: H2-4700, H2-4701
• Display: Mailbox Failure: #H2-4700. Check mailbox. Mailbox Failure: #H2-4701. Check mailbox
• Description: Two Upper Gates seen when opening Rear Door is not operating well. Upper Diverter Motor or Upper Diverter Sensor not assembled well or damaged. Harness Damaged. Main Board 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.

• Code: H2-4710, H2-4711
• Display: Mailbox Failure: #H2-4710. Check mailbox. Mailbox Failure: #H2-4711. Check mailbox
• Description: The Lowest Gate seen when opening Rear Door is not operating well. Lower Diverter Motor or Lower Diverter Sensor not assembled well or damaged. Harness Damaged. Main Board damaged.
• Remedy: 1. Check Lower Diverter Motor Harness connection. 2. Check Lower Diverter Sensor Harness connection. 3. Check Mailbox Main Board Harness connection. 4. Check Lower 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.