Reillo rdb 2.2 lockout immediately

[donned]

Reillo rdb 2.2 firebird c26 DGT. So we had a power cut on Monday and the burner locked out. I reset it and the thing actually ignited for a few seconds on the first try but locked out again. After that, any resetting on the control box just resulted in a pulse of the motor. It would spin maybe a few degrees and then stop until power cycled. No lockout. The lights would blink on the control box but were so dim I couldn't figure out the code. The lights do change pattern when pulling the photocell so that seems fine. Capacitor was leaking green stuff around 1 of the connections so replaced the capacitor, but no change. I'm getting 240V to the control box.

I've checked coils on the motor and I'm getting 32ohm, 24ohm and 8ohms.

I bought a new control box yesterday and tried it this morning. This time as soon as I power on the control box shows a solid red light and the boiler now locks out.

Any ideas appreciated.

 

[oilhead]

Have you checked the solenoid coil?
Have you checked the motor for jammimg, both with the pump fitted and the pump removed?

 

[donned]

Thanks oilhead. Solenoid measured 100ohms and motor spins freely both with pump on and off.

I just discovered that the new controller i got was an MO535 MR1SF, not the MO535 M1PF which came off the burner. Apparently these are not compatible with my firebird. I've ordered another M1PF so hopefully that helps.