[folivier]

Well I was still having an intermittent problem with the front heater not coming on every time. When I would touch the relay on the aquahot it would start. So after reading Steve Magown's post where he had a bad relay socket I looked at mine and it looked discolored so I went ahead and changed all 3. Easy to change out, just pull the release and they pop off the DIN rail. Then snap on the new sockets and wire it up.
But it still didn't work! So stuck my head back in the compartment, wiggled the relay and it started up. Finally figured out that one of the wires from the mini-relay 30amp (small black cube on the side near the terminal block) was loose. Pulled it off and tightened the connector. Now it works every time!