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ERROR CODE: E80
ERROR TYPE: Swap test error
PROBABLE CAUSE: Return water temperature sensor temperature higher than supply water sensor temperature
SOLUTION:
1- Ensure that the connections of the CH supply and return water temperature sensors are correct. Reset the device after securing the connections.
2- If the problem persists, replace the temperature sensors.
3- Check the cable connections of the pump and ensure the cables are not damaged. If there is a problem, replace the pump cables.
4- Ensure that the pump is working properly. If there is a problem, replace the pump.
5- If the problem persists, replace the mainboard.
Updated on 9 January 2024, Tuesday
