Trane GKNE Accompaniment To The Installation, Operation And Maintenance Manual page 35

Table 13. Separated combustion tubular blower troubleshooting with LED indicator assistance (continued)
LED STATUS
Steady Off
Steady On
2. Flashes
3. Flashes
4. Flashes
5. Flashes
6. Flashes
GKNE-SVX001B-EN
INDICATES
Internal control fault, or no power.
Control internal failure or bad ground.
In lockout from failed ignitions or flame
losses.
Pressure Switch open with inducer on or
closed with inducer off.
Limit or rollout switch is open.
Flame sensed while gas valve is off.
On-board microprocessors disagree.
Gas Input Rate
CHECK/REPAIR
1. Line voltage on terminals 120 and C on
transformer.
2. Low voltage (24V) on terminals 24 and C on
transformer.
3. 5 Amp fuse on circuit board.
1. Common side of transformer grounded to
chassis.
2. Loose spark ignitor.
1. Gas supply off or gas supply pressure too low.
2. Flame sense rod contaminated or loose wire.
3. Gas valve switch is off or wires are not
connected.
4. Broken or cracked porcelain on flame probe or
spark ignitor.
1. Obstructions or restrictions in appliance air
intake or flue outlet are preventing proper
combustion airflow.
2. Moisture or debris in tubing that connects
pressure switch and draft inducer.
3. Airflow switch jumpered or miswired.
1. Open manual reset rollout switch.
2. Gas pressure too high, over fire condition.
3. Incorrect airflow due to blockage or motor not
operating.
Flame probe miswired or shortened.
Thermostat is interfering with control board.
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