Halstead Ace High

[jaguar49]

I recently replaced a thermistor as it was shorted out and replaced the mother board , since then the boiler often goes into Lockout when switching on the heating and or hot water.

What does it mean when it goes into Lockout please? And how do I resolve this?

Thanks and a Happy New Year to all on this forum.

 

[Gasguru]

Lockouts are often more critical faults related to combustion and you'll need to call out a GasSafe eng. to take a look.

 

[kidgreen61]

Skip it

 

[sbgasman]

Skip it 2

 

[muggles]

Surprised you managed to get parts, bet they were expensive? Not particularly good boilers when they were new and the company is now defunct

 

[jaguar49]

£3.50 for a thermistor and £54.00 for a new motherboard with 1 year guarantee.
It turns out I did not need a new motherboard , but since I swapped the motherboard I get the Lockout problem which is cleared by turning off and on the electrical power to the boiler.
Suppose I should put the old motherboard back in, as I never got the Lockout problems with that motherboard.

 

[Harry Bloomfield]

New parts can be faulty..

 

[sbgasman]

At those prices I don’t think they are new

 

[muggles]

At those prices I don’t think they are new

Yeah sounds more like "refurbished" parts to me, or just parts stripped from a boiler when it was uninstalled. Cheapest PCB I can find brand new is £215

 

[ianmcd]

Turning the power on and off wont reset that board, you need to reset it using the control knob , hold it in reset for at least 15 seconds and it will reset when released

 

[jaguar49]

Yes have tried the rest knob but does not always work, so I power it down for a minute then switch on

Thanks

 

[Harry Bloomfield]

Yes have tried the rest knob but does not always work, so I power it down for a minute then switch on

Thanks

Volatile memory, settings which are forgotten when power is off, can be retained for a few seconds with no power or as long as a battery can maintain the memory. None-volatile memory will retain the settings indefinitely, with no power and no battery - so a reset button is included to reset things back to default settings. Most modern boilers and control use the latter type of memory, so no point in turning the power off, the reset button has to be used, or the reset button combination advised by a manufacturer.