Detroit Radiant Products Company FA Series - Manual (Page 41)

41
FA Series
Shutdown Procedures:

Set the thermostat to the lowest setting.
 Turn OFF all electrical power to the appliance if service is to be performed.
 Turn manual shut off knob clockwise to OFF. Do not force.
If the heater’s internal diagnostic LED displays any of the signals listed in Charts 4.1-4.2, address the
indicated problem as outlined.
Chart 4.1 • LED Diagnostic Codes - United Technologies Circuit Board
Chart 4.2 • LED Diagnostic Codes - Fenwal Circuit Board
4.0 Operation • Shutdown Procedures
LED CODE
(# of flashes)
GREEN LED STATUS / ERROR
STEADY OFF Internal Control Fault or No Power
STEADY ON Control Ok
1 In Lockout from Failed Ignitions or Flame Losses
2 Pressure Switch Open with Inducer ON
3 Pressure Switch Closed with Inducer OFF
4 Limit Switch is OPEN
5 In Lockout from False Flame
LED CODE
(# of flashes)
AMBER LED STATUS / ERROR
FAST FLASH Flame Present With Gas Valve Off
STEADY ON Flame is Sensed
LED CODE
(# of flashes)
GREEN LED STATUS / ERROR
SLOW FLASH Normal Operation - No Call for Heat
FAST FLASH Normal Operation - Call for Heat
2 Ignition Lockout - No Flame Detected
3 Airflow Fault - Pressure Switch Open or Closed
4 High Limit or Rollout Switch Open
5 Flame Sense Error - Gas Valve Not Energized
STEADY ON Internal Control Failure
LED CODE
(# of flashes)
AMBER LED STATUS / ERROR
OFF Flame Signal is Below Required Level / No Flame Present
STEADY ON Flame is Sensed