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Control Module Status Indicator
A. Gas Furnace
1. One flash - the control is in lock-out
because the inducer centrifugal switch
is or was stuck closed.
2. Two flashes - the control is in lockout
because the signal was not received
by the control that the inducer
centrifugal switch had closed within
the time.
3. Three flashes - the control is in lockout
because a failed ignition attempt, a gas
valve error, or a false flame sensed
during the warm up period. A false
flame condition exists when the flame
sensor senses a flame without a flame
present. If a false flame has been
sensed, the control will only return to
normal operation after the false flame
condition is no longer present.
4. Four flashes - the control is in lockout
due to a failure within the control board.
B. Oil Furnace
The indicator light on the oil primary control
provides lockout,
recycle, and cad cell indications as follows:
1. Flashing ½ second on, ½ second off -
system is locked out or in restricted
mode.
2. Flashing 2 seconds on, 2 seconds off
- control is in recycle mode.
3. Indicator light is on - cad cell is sensing
flame.
4. Indicator light is off - cad cell is not
sensing flame.
TROUBLESHOOTING- Honeywell R7184
Primary Control
The following service procedures will help you
become familiar with the R7184 oil primary
control. For further service information, please
refer to Honeywell R7184 Installation Instruc-
tions, 69-1233 and Beckett Technician's Quick
Reference Guide, RWB 61351.
A. Burner does not start with a call for heat.
1. Check the electrical supply to the
furnace.
2. Be sure the furnace door switch is in
the on position.
3. Check for line voltage at the oil primary
control. The
voltage should be 115 VAC.
4. Check indicator light with burner off, no
call for heat (no
flame).
a. If indicator light is on, the cad cell
is seeing stray light or the cad cell
or controller is defective.
b. If Indicator light is off, go to step 5.
c. If flashing, reset as B 1.
5. Jumper T to T terminals on primary
control.
a. If burner starts, check thermostat
or limit wiring
connections.
b. If burner does not start, turn off
power. Check all
wiring connections.
c. If burner does not start, replace
R7184 control.
B. Burner starts, then locks out on safety
with indicator light flashing at ½
second on, ½ second off.
1. Reset primary control.
To reset the control from lockout, the
button needs only to be pressed and
released. If it is in restricted mode, the
button should be held in for 30
seconds (until the light flashes twice,
or until the light stops flashing on
earlier models).
Note: Restricted Mode: If the control
locks out three times in a row without
a complete heat cycle between
attempts, the lockout becomes
restricted mode.
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