Fault Code History
The control stores the last 5 fault codes in memory.
When the push-button switch is pressed for less than
5 seconds, the control will fl ash the stored fault codes
when the switch is released. The most recent fault code
is fl ashed fi rst, the oldest last.
Fault history may be cleared by holding the push-button
switch for more than 5 seconds.
26 DIAGNOSTIC CODES FOR STATUS LED
A RED LED is provided to indicate furnace operating status
LED Condition Fault Condition Check
8 Flashes
Lockout due to too many
fl ame dropouts
Check system for proper ground.
Dirty, oxidized or failed fl ame sensor.
9 Flashes Not used
10 Flashes Flame present with gas off
Flame at main burner.
Gas valve.
A GREEN LED is provided to indicate high heat state
LED off No demand for high heat
LED on High heat demand, operating normally
LED fl ashing High heat demand, high pressure switch not closed
52
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