Royal Appliance Air Furnace - Manual (Page 32)

29733 R2 06/01/2003
32
C HECK O IL P RIMARY C ONTROL AND I GNITOR
If the trouble does not appear to be in the burner or
ignition hardware, check the oil primary control and the
ignitor by using the following equipment:
à screwdriver.
à voltmeter (0 - 150
VAC )
à insulated jumper wires with both ends stripped.
Electrical Shock Hazard.
Troubleshooting is done with the system powered. Be
careful to observe all necessary precautions to prevent
electrical shock or equipment damage.
Preliminary Checks:
1. Make sure that limit switches are closed and that
contacts are clean.
2. Check for line voltage power on the oil primary
control black and white lead wires.
3. Refer to Table C-4 or C-5 for further
troubleshooting information.
TABLE C-3: R7184 TROUBLESHOOTING
Condition: Burner motor does not start when there is a call for heat.
Procedure Status Corrective Action
1. Check that limit switches
are closed and contacts
are clean. This includes
the burner motor reset
button.
N/A N/A
2. Check for line voltage
power at the oil primary
control. Voltage should
be 120 Vac between the
black and white lead
wires on the oil primary
control.
N/A N/A
Indicator light is on.
Cad cell is defective, sees external light, or
connections have shorted. Go to step 4.
3. Check indicator light with
burner off, no call for heat
(no flame).
Indicator light is off. Go to step 5.
Indicator light turns off.
Eliminate external light source or permanently
shield cad cell.
4. Shield cad cell from
external light.
Indicator light stays on.
· Replace cad cell with new cad cell and
recheck.
· If indicator light does not turn off, remove
yellow leadwires from R7184 and recheck.
· If indicator light is still on, replace the R7184
control.
· If the indicator light turns off, replace cad cell
bracket assembly.
· continued on following page