Glowworm Micron 60ff

[zebedee2001]

Hi all,

My elderly parents boiler is playing up. Had a heating Engineer out as it kept doing silly things, various error codes. He replaced the PCB, thermistor and phial. Since then it has been going into reset which I understand means it has overheated. Called the plumber back, he promised to visit but hasn't showed up and now won't answer my calls.

It is a rather old system and the 60ff isn't the first boiler to be on the system. It's open vented and the tank looked full of sludge so I thought I would have a go. I drained down as much as the system as.i could, not easy as very few drain cocks. I put in some Fernox F3. Hoping this will show some improvement. So my question is, does anyone think this will solve the problem and also as I can't drain it easily is it ok to leave the F3 in the system?

 

[terryplumb]

If boiler is not working and central heating radiators not getting hot ,the f3 will do nothing at all.
Many reasons why boiler may go to lock out.

 

[zebedee2001]

The boiler runs fine for quite a while but then kicks out. Radiators getting hot.

 

[terryplumb]

Quite a while ? Minutes or hours ?
If the latter ,it's more likely to be an issue within the boiler.

 

[ianmcd]

What are the LEDs doing when it locks out ? solid on? flashing slow? flashing fast ?
Page 23 is the lockout indicators codes

https://www.freeboilermanuals.com/assets/pdf/glowworm/micron-60ff.pdf

 

[zebedee2001]

When it kicks out the reset light only is lit continuously.

With the F3 in, the pump turned up a notch & the heating zone valve head off so that the boiler heats the heating system whether heating or hot water is selected it seems to be working (Famous last words)