System Faults, System Lockout Conditions

System Faults

A system fault (illuminated by the fault LED on the logic cards) pre- vents gas ignition but does not lock out the system. System fault con- ditions are as follows:

1)If a flame is detected out of sequence, which may be caused by:

a)a faulty scanner

b)electrical interference on the sensor leads

c)a flame exists in the burner due to a gas leak or other condition.

2)Air flow switch closed before start-up.

System Lockout Conditions

A system lockout will occur (illuminated by the alarm LED on the logic card) for any of the following conditions:

1)Air failure–loss of combustion anytime during the operational cycle.

2)Pilot flame fail–loss of flame during the trial for pilot ignition period.

3)Main flame fail–loss of flame during the main burner trial for ig- nition.

4)Main fuel valve–open after cycle shutdown or before start-up with interlocks closed.

5)Unmatched burners–the S6 DIP switch is not set correctly (see “S6 DIP Switch Settings” on page 13).

6)Relay fail–failure of Bi-Flame internal relays.

7)Low fire fail–low fire switch open for more than 15 minutes prior to trial for ignition.

8)High fire fail–high fire switch has not closed within 15 minutes of high fire purge.

9)Flame fail–loss of flame after main flame has been established.

10)Auxiliary input fail–loss of input voltage to any of the four “Aux” terminals after the limit input is made.

11)Valve leak fail–valve leak sensing device has detected a leak.

12)Wiring error which puts external voltage on any of the output terminals.

13)Welded internal contacts or other malfunctions in the Bi-Flame.

Eclipse Bi-Flame v1.8, Instruction Manual 826, 05/03	21

6500 specifications

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