On demand water heater error code 6

[lynnsmith67]

Can anyone tell me what error code 6 is with an on demand water heater?

[larryflew]

"An E6 is extremely rare and is caused by the water heater not being able to maintain temperature, but not overheating. This can be due to a low temperature setting, low water low, a higher than normal ground water temperature, or a combination of the three. Increasing your water flow should fix this."

Your manual may be different depending on brand, model etc.