U.S. Boiler Company MPO - IQ, Инструкция по эксплуатации

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6. Burner will light, then shut down after a short time, then restart
xIII. TROUBLE SHOOTING (continued)
5. Burner will not come on
Display / Status Recommended Corrective Action
STA10
Recycle / Retry
Delay
The burner loses flame during running mode (
STA
code “
8
”). After a recycle delay the oil primary will attempt to
light the burner again. If the burner loses flame during running mode for three times in a row a Hard Lockout, State
14 will result.
Refer to Recommended Corrective Actions listed on previous page for
ERP 22
.
Display / Status Recommended Corrective Action
STA14
Hard Lockout
Also indicated by
flashing green
light on R7184
Oil Primary
or
“Hard Lockout”
message on
R7284 Oil
Primary
When a hard lockout occurs the burner shuts down and will not restart until the Oil Primary’s manual reset button
is pressed. The Oil Primary will enter the Hard Lockout mode when the burner fails to light, loses flame during run
three times or senses flame during pre-purge or post purge. The following is a summary of corrective actions:
1. No fuel to burner
- Check that the oil tank is not empty.
- Check that the manual shut off valve is open.
- Check fuel lines (and filter) are free of obstructions.
- Check fuel lines are fully purged of air. Use the pump priming feature to purge the system of air
- Check that the burner motor is spinning and the pump is generating adequate pressure.
- Check operation of fuel valve.
2. Nozzle Clogged
- Check the condition of the nozzle and replace if necessary.
3. No Spark
- Check the electrodes, spring contacts and high voltage wires.
- Check ignition transformer for proper operation
4. Air Flow Too High or Too Low
- Check for excessive airflow or draft causing flame to leave burner head.
- Check for back pressure causing flame to be erratic
- Check for excessive soot build up in the burner and flue
- Check burner adjustments (refer to burner manufacturers instructions)
5. CAD Cell Defective
- Check CAD cell for proper alignment and clean if necessary
- Check CAD cell operation, refer to Trouble Shooting section D’s
Erp 5
for procedure.
7. Flame Out of Sequence
Display / Status Recommended Corrective Action
STA16
Flame Out of
Sequence
Flame was detected during pre-purge (valve on delay) or post purge (motor off delay). Check the following:
- Check the oil valve for proper operation
- Check the CAD cell, refer to trouble shooting section D’s
ERP 34
for additional information.
F.
USE BOILER CONTROL DISPLAY
STA
(STATUS) NUMBER TO GUIDE TROUBLESHOOTING (continued)