I have a Beckett head on a Bock Hot water heater. The heater was
shutting off and cavitating (pulsating). I changed the pump and nozzle
and the pulsating went away. However, the burner still shuts off and
trips the breaker on the controls. I've replaced the light sensor,
transformer, controls and checked the gap on the electrodes.
Everything looked fine. I'm wondering if the aquastat could be causing
the burner not to light at times. When I press the breaker button the
burner heats the ho****er to temp. Then for some reason, over night it
pops the breaker on the control. ALso, the boiler is on the same line
and it rund and shuts off fine. Any suggestions?

The reset is not a breaker. If you push it and the burner starts, it means
the aquastat is already in the closed position. There are several reasons
why the primary control may be opening, all of which are best determined by
someone with proper testing equipment




"homeguy" wrote in message
oups.com...
I have a Beckett head on a Bock Hot water heater. The heater was
shutting off and cavitating (pulsating). I changed the pump and nozzle
and the pulsating went away. However, the burner still shuts off and
trips the breaker on the controls. I've replaced the light sensor,
transformer, controls and checked the gap on the electrodes.
Everything looked fine. I'm wondering if the aquastat could be causing
the burner not to light at times. When I press the breaker button the
burner heats the ho****er to temp. Then for some reason, over night it
pops the breaker on the control. ALso, the boiler is on the same line
and it rund and shuts off fine. Any suggestions?

You may have air in the oil line. Check all connections to determine
if they are tight. Your burner and controls are doing waht they are
designed to do. If you do not find any problems with the connections
then you will need to call a qualified oil burner tech. to solve your
problem.

Paul

I guess I could have an air leak. The strange thing is that I have one
oil line coming in and then it's split between the furnace and hot
water heater with check valves. I'll check my connections. I was told
that the motor could be hitting a flat spot. There isn't much else it
could be. The only things not changed are the electrodes (look good)
motor and aquastat. So I giess it can only be these things or air in
the lines. But if there was air in the line wouldn't it sputter when I
press the control button or not start at all? Are there any test I can
do?