Beckett GeniSys Reset and Lights: Red, Green, Yellow

By Ray Bennett · Updated 2 October 2026 · 5 min read · Checked against the maker’s manual

Beckett GeniSys Reset and Lights: Red, Green, Yellow

Short answer

On a Beckett GeniSys 7505 oil burner control, a flashing red light is a soft lockout that one short click of the reset button clears. A steady red light is a hard lockout, and Beckett says only a qualified technician should reset it. Flashing green means the flame went out and it will try again in 60 seconds, and yellow is pump priming.

The Beckett GeniSys 7505 is the control box on many oil burners, on furnaces, boilers and water heaters. It has a reset button with a red light inside it, plus a green light and a yellow light. The lights tell you what the burner just did, and the button does different things depending on how long you hold it.

Everything on this page comes from Beckett’s own installation and operation manual for the GeniSys 7505. Beckett writes it for licensed oil heat technicians. So this page separates the one reset an owner may try from the resets Beckett keeps for a technician. The general rule for any oil burner is here: the one press reset rule.

Before you start

What to carry: a torch. Five minutes to read the lights.

Gas or electric? Neither: this is an oil burner control, running on 120 volts.

Check it is a GeniSys. The name is printed on the control. Beckett’s table shows the 7505 replacing some Honeywell and Carlin controls, and those are not covered here.

Look before you touch. Read which light is on and whether it is steady or flashing before you press anything, because the button acts on what the control is doing.

Where you stop. Oil or smoke in the air. Beckett says the appliance must be free of oil and oil vapor before the burner is started or reset. If you can smell oil or see smoke, do not press reset.

A steady red light. That is a hard lockout. Beckett says it must be reset only by a qualified service technician, after the cause is found.

An empty house in the cold. Beckett warns that a lockout while nobody is home in severe cold can freeze the plumbing within hours. It suggests an alarm that senses low temperature and works through a power cut.

What the three lights mean

Beckett's own light table. Only a flashing red light is a lockout an owner may reset, once.

Check 1Free, two minutes

Read the lights

Red flashing: soft lockout. The control shut the burner down for safety. Beckett lists three reasons: no flame within the 15 second trial, flame seen when there should be none, or a flame that kept going out.

Red steady: hard lockout. Beckett also calls it restricted lockout. It follows repeats of those failures, or a failed check of the control’s own relay.

Green steady: flame. The control sees a flame during normal running. Beckett notes that during standby it could be stray light.

Green flashing: recycle. The flame went out while the burner was running. Beckett says the control waits 60 seconds and runs the start again.

Yellow: priming. The control is in pump prime mode, or the button has been held for 15 seconds or more.

The one reset an owner can try

Check 2Free, one minute

Reset a soft lockout once

Only on a flashing red light. And only with no smell of oil and no smoke.

A short click. Beckett says to reset from lockout, click the button for about a second.

If it locks out again, stop. Beckett says repeated failures put the control into a hard lockout, and that one is for a technician.

Why it stops you. The control limits both resets and recycles. Beckett says the recycle limit is there to stop oil building up in the firing chamber.

What the button does at other times

The same button does several jobs. How long you hold it, and what the burner is doing, decides which.

When	What Beckett says the button does
Soft lockout, a short click	Resets the lockout
Hard lockout, held 15 seconds	Resets it, for a qualified technician only
Burner running, held	Turns the burner off for as long as you hold it
Burner running, a short click	Nothing
Start up, a click after a 15 second hold	Pump prime for four minutes, a technician’s job

Check 3

Use it safely

To stop a running burner. Beckett says holding the button while it runs keeps the burner off until you let go.

Pump priming is not an owner job. Beckett’s steps bleed oil from the pump with a hose into a container, and warn about a hot gas puff back if it goes wrong: what an oil smell from a furnace means.

Hard lockout and the technician

Check 4A service call

Know when to stop

The cause first. Beckett says to find the root cause of a restricted lockout before resetting it, to limit unburned oil in the combustion chamber.

The flame sensor. The control watches the flame with a cad cell. Beckett’s normal reading is 0 to 1,600 ohms with the flame burning.

A wet control. Beckett says never use a control that has been wet: replace it.

Every year. Beckett says oil heating systems need a yearly service by a qualified agency, with the control checked as part of it.

Questions people ask

Why is the red light flashing on my Beckett burner?

A soft lockout: the burner did not light, saw a flame it should not have, or kept losing its flame. One short click resets it if there is no smell of oil or smoke.

What does a steady red light mean?

A hard lockout. Beckett says only a qualified service technician should reset it, after finding the cause.

How many times can I press reset?

One short click clears a soft lockout. If it locks out again, stop: Beckett says repeated failures move the control to a hard lockout, which a technician resets after finding the cause.

Why is the green light flashing?

Recycle. The flame went out while running, and the control waits 60 seconds before trying again.

What does the yellow light mean?

Pump prime mode, or the reset button has been held for 15 seconds or more.

How do I turn the burner off with the button?

Hold the reset button while the burner runs. Beckett says it stays off for as long as you hold it.

Sources: Beckett GeniSys 7505 120V oil burner control installation and operation manual, from beckettcorp.com