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Table C-2: R7184 Troubleshooting
continued from previous page
Procedure Status Corrective Action
Indicator light turns off. Eliminate external light source or permanently shield cad cell.
4. Shield cad cell from exter-
nal light.
Indicator light stays on.
4. Replace cad cell with new cad cell and recheck.
5. If indicator light does not turn off, remove cad cell lead-
wires from R7184 and recheck.
6. If indicator light turns off, replace cad cell bracket as-
sembly.
7. If indicator light does not turn off, replace controller.
Burner starts.
Trouble in thermostat or limit circuit. Check thermostat or limit
wiring connections.
5. Jumper thermostat (T -T)
terminals on R7184
IMPORTANT
First remove one thermostat
lead wire.
Burner does not start.
Disconnect the line voltage power and open line switch.
Check all wiring connections.
Tighten any loose connections and recheck.
If burner does not start, replace R7184
Condition: Burner starts then locks out on safety with indicator light flashing at 1 hz rate (½ second on, ½ second
off)
Indicator light stops flashing. Go to Step 7.
6. Reset oil primary control
by pushing in and releas-
ing red reset button.
Indicator light continues to
flash at 1 Hz rate.
Verify that the control is not in restricted mode. (See notes at
end of this table.). If not in restricted mode, replace R7184
Ignition is off
Spark ignitor could be defective. Check for line voltage at
ignitor terminals. If line voltage is present, replace R7484.
Ignition is on. Go to Step 8.
7. Listen for spark after
burner turns on (after 2
second delay). Ignition is on but no oil is
being sprayed into the com-
bustion chamber.
Wait for “Valve ON” delay to complete. Check oil supply, and
oil line valve. Check for filter blockage or seized oil pump.
Indicator light is on until the
control locks out and starts
flashing during lockout.
Replace R7184
8. Check indicator light after
flame is established, but
before oil primary control
locks out.
Indicator light stays off. Go to step 9.
Burner locks out. Go to step 10. 9. Check cad cell sighting for
view of flame.
• Disconnect line voltage
power and open line
switch.
• Unplug cad cell and clean
cad cell face with soft
cloth. Check sighting for
clear view of flame. Re-
place cad cell in socket.
• Reconnect line voltage
power and close line
switch.
• Start burner.
Burner keeps running. System is OK.
Continues on next page