Responded to a report of no heat at the upstairs towel heater. Upon arrival, Jim explained the issue and also reported a loud noise occurring during oil boiler operation. The noise was diagnosed as a failing motor on the Riello oil burner. A return visit will be required to replace the burner motor and confirm proper operation. Troubleshooting of the upstairs bathroom towel heater revealed a wiring issue. Continuity was confirmed between terminals 2 and 3 on both zone valves, and both zone valves were verified to open properly when a call for heat was made. The existing wiring configuration only allowed the circulator to operate when the downstairs zone was calling for heat, not when only the upstairs zone called. With customer approval, the two zone valves were rewired independently to the relay board so the circulator will operate when either zone is calling for heat. Proper operation was confirmed up to the communication between the relay board and the upstairs zone valve. Althoug
