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I have a Redfyre Centrajet 18/25 pressure jet boiler with a Selectos Burner which has started to suffer from intermittent lockouts.
It has been regularly maintained, it is in good condition and is serviced every year. The last service was in October 2017 during which a new nozzle was fitted together with a new flexible hose between the incoming oil line and the pump. The tank oil filter was checked and was clear. Efficiency was rated at 84%.
Oil feed to the boiler is by gravity, the tank is in good condition, there is no smell of oil in the garage where the boiler is sited and no signs of oil leaks.
Intermittent lockouts did not start until about 3 weeks after the October service and would occur every day or so. Sometimes twice a day.
I called the service engineer and he was unable to cause a lockout. He fitted a new motor capacitor and solenoid coil. Lockouts still occurred during the following week so the engineer was called again.
A new control box was fitted, the spark electrodes were checked and adjusted and the pump pressure was checked. Pressure was fine and was able to go as high as 200 psi. It was reset to 120 psi. The solenoid was taken out, appeared to be clear but was blown through and refitted. The photo cell was replaced.
After this second visit the boiler functioned without problem for the next 5 weeks but lockouts have started again.
The programmer is set to 2 heating/hot water periods per day and if a lockout occurs it seems most likely to be on the first start up cycle of a heating/hot water period after an overnight or mid day shut down.
I have observed that pre venting occurs but there is no ignition and a lock out follows. (Sorry but I cannot confirm if there was a spark or not during the start up cycle.) On pressing the reset button a couple of minutes after the lockout there is a normal start up sequence and things will be fine for the rest of that heating/hot water period or indeed for the next day or so.
I know that the boiler is old but I don't want to keep throwing parts and labour at the elusive problem in the hope that it cures it. Equally, as a pensioner, I cannot have an unreliable boiler but neither can I afford to replace it.
I apologise for a lengthy post but any help or observations would be welcomed.
It has been regularly maintained, it is in good condition and is serviced every year. The last service was in October 2017 during which a new nozzle was fitted together with a new flexible hose between the incoming oil line and the pump. The tank oil filter was checked and was clear. Efficiency was rated at 84%.
Oil feed to the boiler is by gravity, the tank is in good condition, there is no smell of oil in the garage where the boiler is sited and no signs of oil leaks.
Intermittent lockouts did not start until about 3 weeks after the October service and would occur every day or so. Sometimes twice a day.
I called the service engineer and he was unable to cause a lockout. He fitted a new motor capacitor and solenoid coil. Lockouts still occurred during the following week so the engineer was called again.
A new control box was fitted, the spark electrodes were checked and adjusted and the pump pressure was checked. Pressure was fine and was able to go as high as 200 psi. It was reset to 120 psi. The solenoid was taken out, appeared to be clear but was blown through and refitted. The photo cell was replaced.
After this second visit the boiler functioned without problem for the next 5 weeks but lockouts have started again.
The programmer is set to 2 heating/hot water periods per day and if a lockout occurs it seems most likely to be on the first start up cycle of a heating/hot water period after an overnight or mid day shut down.
I have observed that pre venting occurs but there is no ignition and a lock out follows. (Sorry but I cannot confirm if there was a spark or not during the start up cycle.) On pressing the reset button a couple of minutes after the lockout there is a normal start up sequence and things will be fine for the rest of that heating/hot water period or indeed for the next day or so.
I know that the boiler is old but I don't want to keep throwing parts and labour at the elusive problem in the hope that it cures it. Equally, as a pensioner, I cannot have an unreliable boiler but neither can I afford to replace it.
I apologise for a lengthy post but any help or observations would be welcomed.
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