#1 Service. 209.9 hours. 74% propane. Service sheet would not open. Upon arrival unit had faulted for “Under Voltage” on 11/3/22. Looking through history of alarms, unit faulted on 9/23/21 for “Under Voltage” as well. I cleared alarm and started generator to find it was producing 120/240v. Generator was allowed to run for roughly 20 minutes without failure. With unit faulting twice for “Under Voltage”, and if unit faults again, it may be necessary to replace the controller and brushes to resolve issue. Unit has 210 hours so its just before the recommended brush replacement at 250 hours.