Upon arrival spoke with customer. Customer is explaining that boiler has been down for a few days. While inspecting boiler notice that all electrical components are without indicator lights. Rib relay, automatic water feeder and automatic low water cut off. No lights to control module @ boiler. Check service switch @ boiler. No power @ switch. Check breaker @ panel to verify if breaker has been tripped.Breaker panel is not labeled. Shut all breaker and reset breakers on/off Check power @ switch once more. No power @ switch. Check direct wiring going to switch. 1 leg to ground. 120volts was present shortly to ground. Possibility of a bad switch and or faulty breaker @ panel. Customer is having electrical issues where electrician is needed on site. Coordinated with office to have our electrician follow up with customer shortly. Service switch may require to be replaced to see if additional diagnostic is needed View visual findings from this job here - https://visionshare.xoi.io/?id=XA-A2