Surefire BMS-350, Installation And Operation Manual

Page: 39 / 56

39
TROUBLESHOOTING GUIDE
SHUTDOWN CODES Cont.
Code Symptom Action Visual
18
Extreme High
Temp

Pilot/Main burner
not running.

No activity when
attempting startup.
1. Process temperature has exceed EHTD
setting.
2. Inspect for leaking control valves.
3. Solenoid valve not closing.
Blinking Red LED
19
Shutdown
Interlock

Pilot/Main burner
not running.

No activity when
attempting startup.

Ports 24 and 25
are activated.
1. System detecting an open
circuit upon initial start-up.
2. Customer supplied switch is activated.
3. Check switching device for faulty oper-
ation.
4. Verify wiring from switching device.
5. Verify jumper is installed.
6. Jumper is required if function is not be-
ing utilized
Blinking Red LED
20
Main Fuel
Valve Failure
 Pilot/Main burner
not running.

No activity when
attempting startup.

Ports 26 and 27
are activated.
1. System detecting an open circuit upon
initial start-up.
2. Customer supplied switch on main
burner control valve has detected an
unsafe condition.
2. Customer supplied switch is activated.
3. Check switching device for faulty oper-
ation.
4. Verify wiring from switching device.
5. Verify jumper is installed.
6. Jumper is required if function is not be-
ing utilized
7. DO NOT USE AS SHUTDOWN.
Blinking Red LED
21
Replace FT
Ignition Unit

Pilot/Main burner
not running.

No activity when
attempting startup.
1. Igniter Ohms exceeded 4 Ohms
2. Igniter has deteriorated causing high
ohms.
Blinking Red LED.