Honeywell R7184A Installation Instructions Manual page 7

Procedure
4. Shield cad cell from external light.
5. On warm air systems, jumper
thermostat (T to T) terminals on R7184.
(On hydronic systems jumper Limit
terminal and L1 of R7184.)
IMPORTANT:
First remove one thermostat
lead.
Condition: Burner starts, then locks out on safety with indicator light flashing at 1 Hz rate (1/2 second on, 1/2
second off).
1. Check that limit switches are closed
and contacts are clean.
2. Check for line voltage power at the
oil primary control. Voltage should be
120 Vac.
3. Check indicator light with burner off,
no call for heat (no flame).
4. Shield cad cell from external light.
5. On warm air systems, jumper
thermostat (T to T) terminals on R7184.
(On hydronic systems, jumper Limit
terminal and L1 of R7184.)
IMPORTANT:
First remove one thermostat lead.
Condition: Burner starts then locks out on safety with indicator light flashing at 1 Hz rate (1/2 second on, 1/2
second off)
6. Reset oil primary control by pushing
in and releasing red reset button.
Table 5. Troubleshooting Information (Continued).
Status
Indicator light turns
off.
Indicator light stays
on.
Burner starts.
Burner does not start. • Disconnect line voltage power and open line
–
–
Indicator light is on.
Indicator light is off.
Indicator light turns
off.
Indicator light stays
on.
Burner starts.
Burner does not start. •
Indicator light stops
flashing.
Indicator light
continues to flash at
a
1 Hz rate .
R7184A,B,P,U INTERRUPTED ELECTRONIC OIL PRIMARY
Eliminate external light source or permanently shield
cad cell.
• Replace cad cell with new cad cell and recheck.
• If indicator light does not turn off, remove cad cell
leadwires from R7184 and recheck.
• If indicator light turns off, replace cad cell bracket
assembly. Refer to TRADELINE® Catalog for
bracket part numbers.
• If indicator light does not turn off, replace
controller.
Trouble in thermostat or limit circuit. Check
thermostat or limit wiring connections.
switch.
• Check all wiring connections.
• Tighten any loose connections and recheck.
• If burner does not start, replace R7184.
–
–
Cad cell or controller is defective, sees external light
or connections are shorted. Go to step 4.
Go to step 5.
Eliminate external light source or permanently shield
cad cell.
• Replace cad cell with new cad cell and
recheck.
If indicator light does not turn off, remove cad
•
cell leadwires from R7184 and recheck.
• If indicator light turns off, replace cad cell
bracket assembly. Refer to TRADELINE
catalog for bracket part numbers.
If indicator light does not turn off, replace
•
controller.
Trouble is in thermostat or limit circuit. Check
thermostat or limit wiring connections.
Disconnect line voltage power and open line
switch.
Check all wiring connections.
•
Tighten any loose connections and recheck.
•
• If burner does not start, replace R7184.
Go to step 7.
Verify that control is not in restricted mode (see
footnote a). If not in restricted mode, replace R7184.
7
Corrective Actions
®
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