You sound like you are in the exact same situation as me. I have been chasing my tail with AGL for months over this. If the pool was on it own T33 circuit it will never run off the solar. I have been recording my usage every hour and have found that the code 7 on my smart meter is not for hot water as stated but actually my pool pump. Yours may be different as I have 2 in my meter-box. My hot water has been wired to its own separate meter. I ran my pool pump via an extension cord to a standard socket from the house and the pump was running from solar power. Code 7 didn't move. When i connected the pump back to the switch in the pump room the code 7 started to move again. You will need to either install a separate power-point to run the pump from mains power or have it redirected into your mains supply at the meter-box. This is something AGL and/or the contractor fitting the meter should have done. My feed in tariff was massive and my controlled load went up because the pump was running every day bypassing the solar. My pump runs from 10 am until 3 pm. ( see photo below . yellow is feed in and blue is usage ) I am still waiting on AGL to contact me back. Another issue is the meters send information back to AGL in blocks. If your house has a microsecond loss of power, which is extremely common the AGL app will read as an estimate read not actual read. It is a true read but because of the microsecond power loss they must show it as estimate.
