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fires at full input. Correct gas pressure and reset switch. If the switch
cannot be reset, replace it. See
Installation, Operation and
Maintenance Manual
for more information.
b.
Yes. Continue.
3.
Is the high gas pressure switch closed?
a.
No. Verify the firing rate pressure at full input is as specified on the
unit rating plate.
The high gas pressure switch setpoint should not
be adjusted.
The firing rate pressure must remain as specified when
unit fires at full input. Correct gas pressure and reset switch. If the
switch cannot be reset, replace it. See
Installation, Operation and
Maintenance Manual
for more information.
b.
Yes. Continue.
4.
Is the safety circuit relay energized?
a.
No. Check for loose wiring and rectify.
b.
Yes. Continue.
5.
Is the safety circuit relay’s normally open contact closed?
a.
No. Replace the relay.
b.
Yes. Continue.
6.
Is there continuity at the controller between the safety status terminals?
a.
No. There is an open in the wiring between these terminals. Determine
cause and rectify.
b.
Yes. Replace controller.
ALARM CODE:
Burner Status
PROBLEM:
The controller has activated the burner enable output, but the
burner status input is not receiving a signal that the burner is on.
SOLUTION:
Inspect burner control circuit and burner
1.
Is there a prior alarm such as Unit On/Fan Off, Airflow Sw., or Safety
Circuit?
a.
Yes. See the Diagnostic section for the previous alarm.
b.
No. Continue.
2.
Is the burner enable relay energized?
a.
No. There is an open in the 24VAC circuit. Determine
cause and rectify.
b.
Yes. Continue.
3.
Is the burner enable relay’s normally open contact closed?
a.
No. Replace relay.
b.
Yes. Continue.
4.
Is there a pilot flame present?
a.
No. Refer to the
Installation, Operation and Maintenance
Manual
for guidance in troubleshooting the flame relay or
ignition module.
b.
Yes. Continue.
5.
Is the flame relay or ignition module main valve terminal
energized?
a.
No. Refer to the
Installation, Operation and Maintenance
Manual
for guidance in troubleshooting the flame relay or
ignition module.
b.
Yes. Continue.
6.
Is the gas valve/burner status relay energized?
