Arrived at location on 8/1/22 - Checked in with cook. Said the Superior c/o isn’t heating. Removed kick panel. Turned on. No flame or ignition. Checked power to HSI. No power. Checked transformer. 120v to primary and 24v at secondary. Module goes into lockout. Changed ignition module with new. Turned on. Now have 24v to ignitor. Burner ignited. Set thermostat to 300. Heated and cycled off at116v. Cycled back on at 305v. Set to 350. Cycled off at 357 and back on at 346. Let cycle several times and it’s cycling ok. Observed for a time and no failures. Blower working ok. Works in cool down mode, as well. Back in service.