Hi, had a very quick look at one the other day and CH runs ok, but when HW is run the water gets to temp and goes to lock out after about 1 min. But the symptom is the gas goes out, tries to relight, recognises no gas and locks out. My solenoid tester stops spinning when gas goes out, so no power to sol? Really didnt want this job, too busy, but she wants me back to look cos of Heateam's call out charge . Any pointers, no instructions and not my fave boiler............!