Nordyne Gas Furnace: FG7TC
Re: Furnace Lockout Codes
Furnace Control Board Fault Conditions |
GREEN |
RED |
Description |
Off |
Off |
No Control Power |
Flash |
Flash |
L1/Neutral Polarity Reversed |
Alternating |
1 Hour Lockout |
On |
On |
Normal Operation |
On |
Flash |
Pressure Switch Stuck Closed |
Flash |
On |
Pressure Switch Open when is should be Closed |
Flash |
Off |
Limit Switch Open |
On |
Off |
Motor Fault |
YELLOW |
Description |
Flashing |
Low Flame Signal |
On |
Flame Present |
"Fixed Speed" Motor Control Board Fault Conditions |
GREEN |
RED |
Description |
Off |
Off |
No Control Power |
On |
On |
Normal Operation |
On |
Flash |
Motor Fault |
Flash |
On |
Twin Fault (no motor fault) |
Flash |
Flash |
Communication Fault |
"Variable Speed" Motor Control Board Fault Conditions |
GREEN |
RED |
Description |
Off |
Off |
No Control Power |
On |
On |
Normal Operation |
On |
Flash |
Motor Fault |
Flash |
Flash |
Communication Fault |