Trane GHND-SVX01A-EN - Manual (Page 37)

GHND-SVX01A-EN • High Efficiency Propeller Fan Gas Unit Heater 37
Trouble Shooting
• Reset manifold pressure. Refer to “Operation”; Replace regulator section of
combination gas valve or complete valve; or Check with local gas supplier for
proper orifice size and replace. Refer to “Operation”.
D. Yellow tip flame (some yellow tipping on propane gas is permissible).
POSSIBLE CAUSE(S)
1. Insufficient primary air.
2. Clogged main burner ports.
3. Misaligned orifices.
4. Clogged flue collector.
5. Air shutter linted.
6. Insufficient combustion.
CORRECTIVE ACTION
• Open air shutters. Refer to “Operation”.
• Clean main burner ports.
• Replace manifold assembly.
• Clean flue collector.
• Check for dust or lint at air mixer opening and around the air shutter.
• Clean combustion air inlet openings in bottom panel, see “Installation”.
E. Floating flame.
POSSIBLE CAUSE(S)
1. Blocked venting.
2. Insufficient combustion air.
3. Blocked heat exchanger.
4. Air leak into combustion chamber or flue collector.
CORRECTIVE ACTION
• Clean flue. Refer to “Installation”.
• Clean combustion air inlet openings in bottom panel, see “Installation”.
• Clean heat exchanger.
• Determine cause and repairaccordingly.
F. Gas Odor.
POSSIBLE CAUSE(S)
1. Shut off gas supply immediately!
2. Blocked heat exchanger/venting.