I'm looking for some advice on a frustrating problem I'm having with my old Eurostar 50-60s oil boiler please? Although it's old, most parts needed to operate are now new.
The symptoms indicate a broken burner motor or oil pump. I wrongly assumed the motor so I ordered a new one only to find that once removed it was actually the fuel pump that was stopping the motor turning therefore I replaced the pump also. The controller was replaced only a few months ago. It then started up fine.....and I was feeling pleased that everything seemed to work. BUT once the stat turned off the burner (or even if it was turned down manually) the motor wouldn't run again and lock out occurred. The motor did feel quite hot. If left for a day, it would start up again but only until temp reached (or turned off) and will not restart (locks out). So (re the hot motor) I replaced the capacitor but the same thing happened. Checked the oil pressure and that is correct at 110psi.
So new motor, pump, controller (inc photocell) and capacitor installed, fan wheel is clean and unobstructed; when the motor runs at first start, it all seems to run well. Does anyone on here have any ideas on what I could try next?
[btw There was a discussion on something similar back in 2010 but not exactly the same so thought it best to try a new post.].
Thanks in advance. JC
The symptoms indicate a broken burner motor or oil pump. I wrongly assumed the motor so I ordered a new one only to find that once removed it was actually the fuel pump that was stopping the motor turning therefore I replaced the pump also. The controller was replaced only a few months ago. It then started up fine.....and I was feeling pleased that everything seemed to work. BUT once the stat turned off the burner (or even if it was turned down manually) the motor wouldn't run again and lock out occurred. The motor did feel quite hot. If left for a day, it would start up again but only until temp reached (or turned off) and will not restart (locks out). So (re the hot motor) I replaced the capacitor but the same thing happened. Checked the oil pressure and that is correct at 110psi.
So new motor, pump, controller (inc photocell) and capacitor installed, fan wheel is clean and unobstructed; when the motor runs at first start, it all seems to run well. Does anyone on here have any ideas on what I could try next?
[btw There was a discussion on something similar back in 2010 but not exactly the same so thought it best to try a new post.].
Thanks in advance. JC