Operating instructions

Manual 2100-422G
Page 14 of 42
PRIMARY OPERATIONAL GUIDE
BECKETT R7184B
Pre-Purge Delay – 15 seconds on delay
LED Codes –
• Flashing 1/2 second on / 1/2 second off –
system is locked out or in restricted mode
(hard lockout).
• Flashing 2 seconds on / 2 seconds off –
control is in recycle mode (soft lockout).
• ON – CAD cell is sensing flame
• OFF – CAD cell is not sensing flame.
Ignition Trials – On any given call for heat the
control will allow three ignition trials. After the three
trials the control will go into a soft lockout mode. The
LED will flash 2 seconds on and 2 seconds off when
in this recycle mode. The control may then be reset
by pressing the RED reset button on the control. If
within the same original call for heat the control will
again allow three ignition trials followed by another
soft lockout and a 2 second on / 2 second off LED
code. The control my be reset one additional time by
pressing the red reset button. This will allow three
final ignition trials. If all three of the final ignition
trials fail then the control goes into a hard lockout or
Restricted Mode. This series of ignition failures must
all occur with the original call for heat in order to
reach the Restricted Mode. The LED will now flash
1/2 second on / 1/2 second off indicating the
restricted mode. The control can be resurrected
from the restricted mode only by pressing and
holding the red reset button for approximately 30
seconds until the LED flashes twice. Removing unit
power or resetting the thermostat will not reset the
control.
Checking CAD Cell – With a call for heat and the
burner ignited, press and release the red reset
button. The LED will go out and then flash 1, 2, 3, or
4 times before returning to the run mode. The CAD
cell resistance must be below 1600 ohms for proper
operation.
MIS-2491
BECKETT R7184 B 1032
BECKETT GENISYS
MODEL 7505
• 1 flash – Less than 400 ohms
• 2 flashes – More than 400 and less than 800
ohms
• 3 flashes – More than 800 and less than
1600 ohms
• 4 flashes – More than 1600 and less than
5000 ohms
BECKETT GENISYS 7505
Sequence of Operation
BURNER STATES
1. Standby: The burner is idle, waiting for a call
for heat.
2. Valve-On Delay (Prepurge): The igniter and
motor are on while the control delays turning on
the oil solenoid valve for the programmed time.
3. Trial for Ignition: The fuel valve is opened. A
flame should be established within the factory
set trial for ignition time (“lockout time”).
4. Lockout: The control has shut the burner down
for one of the following safety reasons: