Holykell HPT604 Troubleshooting

Despite being connected to a power source,
the fuel sensor does not receive any power

The issue will be identified during the check that the technician should perform with the electronic test tool (FLUKE).

1. Ensure that the incoming wires from the power source are properly secured at both ends. A power source can be an external source or a Galooli internal connection, such as an Elara cabinet tray/Elara metal box.

   

2. Ensure that the power supply is between 10 and 30 volts DC.

 When the fuel sensor is connected to the communication terminal block but is unable to communicate with the Elara device 

• Connect the fuel sensor cables to the terminal block properly.

• Ensure that the terminal block's power supply is 12 volts. 

• The RS485 connection cables should be connected according to the pinout diagram:
  

  • On the fuel sensor side

    

  • On the terminal block side - refer to the wiring diagram provided by Galooli
    

Despite receiving power and being properly connected, the Galooli gateways in Power Center are not connected to the fuel sensor

1. Ensure that the fuel sensor ID is configured with the correct baud rate of 19200 and the device ID by the wiring diagram.

   

2. Be sure to select the correct fuel sensor parameters when adding the fuel sensor to the Elara gateway, including: "Device", "ID", and "Device Baudrate” according to the wiring diagram provided by Galooli.

   

Fuel sensors are communicating properly, but the data they provide is incorrect.

1. Remove the fuel sensor from the fuel tank and place it straight on a flat surface. Ensure the tip of the fuel sensor is 2 cm away from the base of the fuel's sensor securing rod.
   

2. Read all configurations from the fuel sensor calibration tab on the “Services center”.

   

3. Once done perform the “Zero calibration” on the fuel sensor
   

   

• when it is required to perform full calibration procedure

• what action when the fuel reading is stuck

• what to do when the fuel reading is "wave" pattern

• when it is required to recalibrate the senosr (after 3 years)