Trane GUNE, Инструкция по установке, эксплуатации и обслуживанию

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34 GUNE-SVX001A-EN
Troubleshooting
WARNING
Hazardous Service Procedures!
Failure to follow all precautions in this manual and on the
tags, stickers, and labels could result in death or serious
injury.
Technicians, in order to protect themselves from
potential electrical, mechanical, and chemical hazards,
MUST follow precautions in this manual and on the tags,
stickers, and labels, as well as the following instructions:
Unless specified otherwise, disconnect all electrical
power including remote disconnect and discharge all
energy storing devices such as capacitors before
servicing. Follow proper lockout/tagout procedures to
ensure the power can not be inadvertently energized.
When necessary to work with live electrical components,
have a qualified licensed electrician or other individual
who has been trained in handling live electrical
components perform these tasks.
Table 14. Tubular duct furnace troubleshooting guide
Symptoms Possible Cause(s) Corrective Action
Flame pops back. Burner orifice too small.
Check with local gas supplier for proper orifice size and
replace. Refer to
“Gas Input Rate,” p. 28 .
Noisy flame.
Irregular orifice causing whistle or resonance. Replace orifice.
Excessive gas input.
Test and reset manifold pressure (refer to Table 5,
p. 15 .)
Yellow tip flame.
Note:
Some yellow tipping on LP
gas is permissible.
Clogged main burners. Clean main burner ports.
Misaligned orifices. Replace manifold assembly.
Insufficient combustion air.
Refer to “Clearances,” p. 10 and “Venting,” p. 16 to
ensure unit is properly mounted and vented.
Unit possibly over fired. Check gas input and manifold pressures.
Partially blocked flue vent pipe. Check flue vent pipe and clear as needed.
Floating flame.
Blocked venting. Check flue vent pipe and clear as needed.
Insufficient combustion air.
Check combustion air inlet openings and/or vent pipe
and clear as needed.
Blocked heat exchanger. Clean heat exchanger. Refer to “Maintenance,” p. 31 .
Air leak into combustion chamber or flue collector. Check flue collector and clear as needed.
Gas odor.
Shut off gas supply
immediately!
Gas leak. Shut off gas supply immediately! Inspect all gas piping and repair accordingly.
Leaking gas test port on valve. Check to ensure gas test ports are sealed.
Blocked heat exchanger. Clean heat exchanger. Refer to “Maintenance,” p. 31 .
Blocked flue collector. Check flue collector and clear as needed.
Negative pressure in the building. Refer to “Installation,” p. 10 .
Delayed ignition.
Improper ground. Check grounding wires and spark ignitor connections.
Bad or broken spark cable.
Inspect spark cable connections andcuts. Replace if
necessary.
Faulty control board.
Check to ensure spark ignitor is energized after pre-
purge period.
Pressure regulator set too low.
Test and reset manifold pressure (refer to Table 5,
p. 15 .)
Main burner orifices dirty. Clean or replace orifices.
Improper venting. Refer to “Venting,” p. 16 .