Tracys ♦ I am not sure exactly what all these different things mean. You have a lot of symptoms. I would first try and adjust your pressure stat and here are instructions.
ECM Giotto Pressure Stat Adjustment


Tools: Medium Phillips head screwdriver
15 mm open end or Crescent wrench
Large pliers or channel locks.


1.ALWAYS unplug the machine.
2.This procedure requires the machine to be cool before you begin.
3.Remove the reservoir from the machine.
4.Disconnect the reservoir (white) lead from the housing.
5.Unscrew the 4 Phillips head screws in the corner of the top plate. Removal of the top plate exposes the interior of the machine.
6.The pressure stat is located to the right of the boiler (if facing the machine) The pressure stat is round in shape, it has 2 wires connected to it , it also has a small, top of the boiler. A single piece of copper tubing coils down underneath the pressure stat, and connects to the boiler’s top.
7.Adjusting the pressure stat. The flat head, brass adjustment screw in the center of the pressure stat is fairly sensitive. A quarter-turn in either direction will probably be as big an adjustment as you will ever need. A clockwise turn on the pressure stat will increase the temperature and pressure (as they are related). A counterclockwise turn will decrease the pressure/temperature. Make the adjustment while the machine is off, cold and unplugged. After the adjustment has been made, re-assemble in reverse order.
8.Once the machine is re-assembled, plug in and heat up as normal. Let the pressure gauge on the front of the machine be your guide. If the pressure was increased, then the gauge will respond accordingly. You may have to repeat the process in order to get the exact adjustment you are looking for.

You may also want to check on the sensor on the water tank. I am not sure why backflushing would have any effect on what your machine is doing. Try adjusting the pressure sat and if that does not work give us a call.

12-31-2009 5:05pm |