Logika A10 alarm

The Logika pellet boiler features a self cleaning grate. During the startup process, the grate will be rotated down into a vertical position to tip any ash and deposits into the ash pan. It will then rotate back into its normal horizontal position.

It has been reported on some newly commissioned boilers that during this cycle, an A10 alarm is being returned which suggests that the grate has not returned fully home to its normal horizontal position after tipping. The reason for this is likely due to the fact that the microswitch in the motor has not been correctly adjusted for this application. If incorrectly set, the microswitch will indicate to the motherboard that the grate is still open despite it being fully closed.

The first picture below shows the location of this motor (Belimo) on the rear of the boiler side of the Logika:

The following image shows the correct adjustment for the microswitch if this situation has occured. Note that the adjustment is made to the lower of the two switches, and it should be pointing in the 11 'o clock position: