B
Bunker
Had 2 interesting jobs this week on Heatslaves.
Firstly, fuse kept blowing (3.15A fast blows - always keep some in the van). Worked it down to the coil. This is the second Heatslave this month with the same diagnosis, anyone else had that?
Second job of interest was another HS with a leaking flow switch and burner lock out. I fixed the switch but couldntu get the burner to stay on. I tried the old trick of a quick off/ on just before lock out which fired her up but only until next cycle. This sometimes allows any damp in the electrics to dry out.
Then I found even more wet in the control box and base.
Turns out the flow switch was letting water through itself into the cable sleeve, up the sleeve to the 2 pin plug, dripping off the plug onto the base of the electrical housing right next to the burner umbilical. Water then draining down into the control box base!! I blew it through and loads came out.
So I added a rubber washer and some ptfe to the flow switch and cut the cable sleeving to let any water drain out until I get a new switch. I then dried the electrics out with a hair drier.
Annoyingly, I had a text this morning to say its blown the fuse again so something must be damaged. Lord knows how Im going to get to the bottom of that as the fuse is blowing so late on. I tested all the functions before I left so its nothing obvious.
Firstly, fuse kept blowing (3.15A fast blows - always keep some in the van). Worked it down to the coil. This is the second Heatslave this month with the same diagnosis, anyone else had that?
Second job of interest was another HS with a leaking flow switch and burner lock out. I fixed the switch but couldntu get the burner to stay on. I tried the old trick of a quick off/ on just before lock out which fired her up but only until next cycle. This sometimes allows any damp in the electrics to dry out.
Then I found even more wet in the control box and base.
Turns out the flow switch was letting water through itself into the cable sleeve, up the sleeve to the 2 pin plug, dripping off the plug onto the base of the electrical housing right next to the burner umbilical. Water then draining down into the control box base!! I blew it through and loads came out.
So I added a rubber washer and some ptfe to the flow switch and cut the cable sleeving to let any water drain out until I get a new switch. I then dried the electrics out with a hair drier.
Annoyingly, I had a text this morning to say its blown the fuse again so something must be damaged. Lord knows how Im going to get to the bottom of that as the fuse is blowing so late on. I tested all the functions before I left so its nothing obvious.
