Posts Tagged ‘protectorelay’

Oil Burner Repair- Even Pros have A Hard Time

Monday, January 4th, 2010
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Sometimes repairing an oil burner can be extremely easy and everything will go smoothly.  Other times it can be highly frustrating to no end.

No matter what brand you have servicing your oil burner can be really frustrating.  The basic functionality of this heating component is really simple.  And yet, for some reason, repairing and maintaining your oil burner can be the biggest pain you could ever imagine.

It makes no difference if you have a Beckett, Wayne Home Equipment, or Carlin oil burner.  All brands can be hard to work on.

I also believe you should start with the nozzle on the oil burner system.  It can become clogged or damaged easily.  So start off by changing this if you experience problems.

But if after doing this, and it runs smooth for a while, and then you get nothing its time to try something else.  Check the transformer.  Use extreme caution when doing this!  Is it throwing sparks?  What about the protectorelay? Is everything else in good shape?

Its annoying because sometimes the motor starts up and stops like it should.   Maybe you even have a combustion analyzer and it is showing that the flame is burner great. So what do you do at this point?
If you want to save money you can try to fix the problem yourself.  You may or may not be able to do it.
What I would recommend at this point is to call a certified boiler or furnace technician out for a service call.  He will have the special tools to properly see what is going on.  He can hook a specialized monitor to your oil burner and it will track the component that did not work when it does not light like it is supposed to.

When oil burners fail its oftentimes in intervals and not continuous at all.  This drives the most experienced and talented service techs crazy!  These guys take pride in not being a parts changer, they want to fix the problem.  But sometimes it is just extremely difficult to find that source of the problem in some situations.
Be patient.  I would like to remind you that you are not alone if you are in the situation where you cannot figure out the exact cause of the problem with your oil burner.

I have a friend who installs and repairs oil burners for a living and he has fixed tons of every kind you can think of.  Sometimes a problem takes twenty to thirty minutes and other times it takes several days.

Oil Burner Furnace Repair

Saturday, November 21st, 2009
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Another common problem that happens with oil burners in furnaces is a defective protectorelay.

What exactly does it do? The oil that comes out of the burner nozzle turns into a fog.  This fog is is ignited with an electric spark that is generated from the transformer.

This spark bounces across electrodes placed in front of the nozzle and is blown into the oil spray a blast of air.  The current generated by the fire on the window of the cell is conducted to a protecto-relay and keeps the relay engaged and the burner motor running.

If the fire goes out, the burner will shut down to prevent a build up of un-ignited fuel which has the possibility to create a very explosive condition. This device, also known as a burner relay,  also has another function. It has a transformer built into it that transmits a 24 volt current to the thermostat which signals for more heat.

Protectorelay

This is a very important item on your boiler or furnace and it has the ability to give you a lot of problems.  At times for no reason whatsoever it can lock out which in effect shuts down your heat.

If this tends to happen a lot then you need to look into getting a professional to install a brand new protectorelay on your oil burner.  This safety device works great when its working well and can cause major headaches when it is not.

Here are some instructions if you do decide to change it yourself.

Before you rip out the the relay, do yourself a favor first, check or change the cad cell.  This is the device the detects the fire when your oil burner lights and tells the protectorelay to keep the burner running.  When the cad cell becomes defective it does not send a strong enough signal to the relay to do this.

Once you have done this you can begin fixing your problem.  Its not very difficult if you know what you are doing.  It will take a matter of minutes.

Caution- turn the power completely off!  Make sure of this so that you do not get shocked!

Loosen the two screws on the junction box and slide off the relay.  Take a marker and mark the wires and the connection for each one of them.  This will make putting the new one on a breeze because you will know exactly how to get the wiring back correctly.  Some people even like to have the new protectorelay on hand and connect one wire at a time.

Reconnect the wires to the new control and you are about done.  Put it back on the junction box and turn back on the power.  Your oil burner in your furnace will now be running like it should.