How to Reset the Oil Burner Cad Cell Relay:
The
photograph shows an older Honeywell cad cell relay switch - the gray
box in the right in this illustration. If the cad cell has
told the relay that it can't see any flame, the cad cell relay switch
will have turned off electrical power to the oil burner
and the red button will have popped up.

If the red "reset" button on the cad cell relay is sticking up and the oil burner has shut down,
the homeowner is permitted to try ONCE to "reset" the system by pressing the red reset button.

If
the oil burner does NOT turn on and run normally and continuously (no
smoke, no loud noises, etc.) for at least 5 or 10 minutes after
resetting the relay or pressing the reset button, DO NOT keep resetting
the system since doing so can flood the combustion chamber with
un-burned heating oil - a dangerous condition.


How to Reset the Oil Burner Cad Cell Relay: The photograph shows an older Honeywell cad cell relay switch - the gray box in the right in this illustration. If the cad cell has told the relay that it can't see any flame, the cad cell relay switch will have turned off electrical power to the oil burner and the red button will have popped up.
If the red "reset" button on the cad cell relay is sticking up and the oil burner has shut down, the homeowner is permitted to try ONCE to "reset" the system by pressing the red reset button.
If the oil burner does NOT turn on and run normally and continuously (no smoke, no loud noises, etc.) for at least 5 or 10 minutes after resetting the relay or pressing the reset button, DO NOT keep resetting the system since doing so can flood the combustion chamber with un-burned heating oil - a dangerous condition.

use tis to check ur relay first whether workin or not?

Using your meter, check voltage between L1 and ground.
You should have 120 volts all time. If you do not have 120 volts
all the time, the wiring is wrong or your breaker is off.

Using your meter, check voltage between B1 and B2. You
should have 120 volts (oil) or 24V (gas) when there is a call for
heat. If you do not have 120 volts (oil) or 24V (gas) when there
is a call for heat, you have a bad aquastat or thermostat


note..

left side black wire is connected directly to b2 line..
right side black to ground




2.


use tis to check ur relay first whether workin or not?

Using your meter, check voltage between L1 and ground.
You should have 120 volts all time. If you do not have 120 volts
all the time, the wiring is wrong or your breaker is off.

Using your meter, check voltage between B1 and B2. You
should have 120 volts (oil) or 24V (gas) when there is a call for
heat. If you do not have 120 volts (oil) or 24V (gas) when there
is a call for heat, you have a bad aquastat or thermostat


note..

left side black wire is connected directly to b2 line..
right side black to ground



2.