Trane GHND-SVX01A-EN - Manual (Page 46)

46 High Efficiency Propeller Fan Gas Unit Heater •
GHND-SVX01A-EN
Trouble Shooting
• Check for 24V across 1 and 3 terminals on fan relay. If 24V is present, jumper
terminals numbered 2 and 4. If motor runs, the relay is defective and must be
replaced.If 24V is not present, check wiring per diagrams.
CC. Power venter motor turns on and off while burner is operating.
POSSIBLE CAUSE(S)
1. Fan relay heater element improperly wired.
2. Defective venter relay switch.
3. Motor overload protector cycling on and off.
4. Motor not properly oiled.
CORRECTIVE ACTION
• Be sure venter relay heater terminals are connected per diagrams.
• Replace venter relay.
• Check motor amps against motor name plate rating, check voltage, replace power
venter motor if defective.
• Refer to label on motor.
DD. Power ventor motor will not stop.
POSSIBLE CAUSE(S)
1. Improperly wired venter relay.
2. Main burners not lighting while thermostat calls for heat.
3. Defective venter relay.
CORRECTIVE ACTION
• Check all wiring.
• Refer to H & N symptoms.
• Replace venter relay.