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.

Replace cad cell with new cad cell and recheck.

4. Shield cad cell from exter-

 

5.

If indicator light does not turn off, remove cad cell lead-

 

 

wires from R7184 and recheck.

 

nal light.

 

Indicator light stays on.

 

 

 

6.

If indicator light turns off, replace cad cell bracket as-

 

 

 

 

 

 

 

 

 

sembly.

 

 

 

 

7.

If indicator light does not turn off, replace controller.

 

 

 

 

 

5.

Jumper thermostat (T

-T)

Burner starts.

Trouble in thermostat or limit circuit. Check thermostat or limit

 

terminals on R7184

 

wiring connections.

 

 

 

IMPORTANT

 

 

Disconnect the line voltage power and open line switch.

 

Burner does not start.

Check all wiring connections.

First

remove one thermostat

Tighten any loose connections and recheck.

 

lead wire.

 

 

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)

6.

Reset

oil

primary

control

Indicator light stops flashing.

Go to Step 7.

 

by pushing in and releas-

Indicator light continues

to

Verify that the control is not in restricted mode. (See notes at

 

ing red reset button.

 

flash at 1 Hz rate.

 

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.

7.

Listen

for

spark

 

after

 

 

 

Ignition is on.

 

Go to Step 8.

 

burner turns on (after 2

 

 

 

 

 

 

second delay).

 

 

Ignition is on but no oil

is

Wait for “Valve ON” delay to complete. Check oil supply, and

 

 

 

 

 

 

 

being sprayed into the com-

 

 

 

 

 

 

 

oil line valve. Check for filter blockage or seized oil pump.

 

 

 

 

 

 

 

bustion chamber.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

8.

Check

indicator light

after

Indicator light is on until the

Replace R7184

 

flame

is

established,

but

control locks out and starts

 

before

oil

primary

control

flashing during lockout.

 

 

 

locks out.

 

 

 

 

Indicator light stays off.

 

Go to step 9.

 

 

 

 

 

9.

Check cad cell sighting for

Burner locks out.

 

Go to step 10.

 

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

Burner keeps running.

 

System is OK.

 

clear view of flame. Re-

 

 

 

 

place cad cell in socket.

 

 

 

•

Reconnect

line

voltage

 

 

 

 

power

and

close

line

 

 

 

 

switch.

 

 

 

 

 

 

 

 

•

Start burner.

 

 

 

 

 

 

Continues on next page

24

Page 23 Page 25
Page 24
Image 24
York P3DHX12F08001, P2DHX16F12001, P4LBX20F19001, P2LBX16F14501 But Control locks out and starts Before Oil
Page 23 Page 25

P4LBX20F19001, P2DHX16F12001, P3DHX12F08001, P2LBX16F14501 specifications

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