Arrived onsite due to customer complaint of there boiler system not working properly. Upon arrival we found both boilers to not be functioning properly with no flame inside the unit. Swapped out both low water cutoff’s for Boiler #1 and Boiler #2. Boiler #1 was firing and working properly when we left. Boiler #2 is still currently having intermittent issues with the control board and aqua stat, which is causing the boiler not to fire and work properly. Pricing will be worked up to replaced either the control or aqua stat. CPI still needs to replace the boiler gauge on boiler #2 when we return.