In fairness to all, we don't discuss pricing on the Wall. Thanks for your cooperation.
Issues with & Replacement of Honeywell L8148E Aquastat
We have a Honeywell L8148 that has started to act up and in
lieu of spending $450 to have a technician replace it, I’m interested in
swapping it out myself.
This will be the third time within 6 years of ownership that
the aquastat will have to be replaced.
To give some background of the problem, the burner will
sometimes fail to ignite. The “solution” to the problem is giving a slight
jiggle to the plug and wire shown in the red box of the attached image. The
burner ignites and heat is restored.
Then the same problem will happen again, usually at 3 in the
morning of if we’re away for the weekend only to return to a house with an
internal temperature in the 50s.
So, I assume it’s not possible to replace the suspect plug
or circuit board and a total replacement is in order. It seems like a
straightforward r&r, though I’m a bit uncertain about the physical
connection of the aquastat to the boiler (see attached image).
Do I need to drain the boiler prior to unscrewing this nut?
Do I unscrew the aquastat off this stem?
Any .02, thoughts and advice would be very welcome.