Checked resistance this morning when cold = 2076 ohms
Ran boiler to lockout (about 4 minutes) resistance = open circuit
After about 5 minutes resistance = 2096
Picking up a new coil now.
Thanks oilman :D
Thanks oilman - will check the coil resistance. All oil filters are clean (external, oil pump and nozzle) - just cleaned them (although they weren't dirty). Photocell was clean as well but I cleaned it anyway.
My boiler has just started locking out and I am hoping for some advice.
Burner is Electro Oil Inter B11C with conventional flue, oil tank above boiler, single line to Danfoss BFP 11 pump. The boiler has run from new faultlessly for 5 years. System is Honeywell S plan, sealed.
I have...