Description
Fault Code (4)8 indicates that the connected load is faulty. This can occur if there is a problem with the heating element or the wiring associated with the heater, causing abnormal resistance or a short circuit.
Checks to Perform
1. Verify the Power Rating of All Connected Heaters
- Confirm that the power rating of all connected heaters is within the recommended specifications.
- Ensure that the total load does not exceed 3.7kW per heater output.
2. Isolate the Unit from the Supply
- Disconnect the device from the power supply to ensure safety before performing any checks.
3. Check the Resistance Between Heater Terminals
-
Use a multimeter to measure the resistance between the following heater terminals:
- L1 and N
- L2 and N
The resistance should fall within the range of 15 Ω to 350 Ω.
Note:
- A resistance of approximately 18-20 Ω is typical for an immersion heater.
4. If the Load is Faulty
- If the measured resistance falls outside the normal range, the connected heater may be faulty.
- Replace the affected heater before reconnecting the device to the power supply.
Post-Check Actions
- After replacing any faulty heaters, reconnect the device to the power supply and check if the error code clears.
- If the issue persists despite replacing the heater, further inspection of the wiring or connections may be necessary.
- If required, consult technical support for further guidance or assistance.
Preventative Recommendations
- Regularly inspect the connected heaters for any signs of wear or damage that could cause faulty connections.
- Ensure proper installation and maintenance of heaters to prevent load faults in the future.
By following these steps, you can effectively resolve Fault Code (4)8: Load Fault and restore proper operation of the device.