In Case Of Difficulty - Trane TCONT602AF22MA Installation Instructions Manual

In case of difficulty

If you have difficulty with your Comfort Control, please try the suggestions below.
Most problems can be corrected quickly and easily.
Display is blank
Temperature
settings do not
change
Heating system
does not respond
("Heat On"
appears on
screen)
Cooling system
does not respond
("Cool On"
appears on
screen)
Fan does not
turn on in a call
for heat
Heat/cool both on
at same time, or
heat does not
turn off
Heating equip-
ment is running
in cool mode
Cannot change
system setting
to "Heat"
• Check circuit breaker and reset if necessary.
• Make sure power switch at heating & cooling system is on.
• Make sure furnace door is closed securely.
Make sure heating and cooling temperatures are set to acceptable ranges:
• Heat: 40° to 90°F (4.5° to 32°C).
• Cool: 60° to 99°F (16° to 37°C).
Check temperature range stop settings (Function 27 & 28 on page 9).
• Check for 24 VAC at the equipment on the secondary side of the trans-
former between power and common. If voltage is not present, check the
heating equipment to find the cause of the problem.
• Check for 24 VAC between the heat terminal (W) and the transformer
common. If 24 VAC is present, the Comfort Control is functional. Check the
heating equipment to find the cause of the problem.
• Check for loose or broken wires between the Comfort Control and the
heating equipment.
• Check for 24 VAC at the equipment on the secondary side of the trans-
former between power and common. If voltage is not present, check the
cooling equipment to find the cause of the problem
• Check for 24 VAC between the cooling terminal (Y) and the transformer
common. If 24 VAC is present, the Comfort Control is functional. Check
the cooling system to find the cause of the problem.
• Check for loose or broken wires between the Comfort Control and the
cooling equipment.
• Check Installer Setup, Function 3 (Fan Control), to make sure the fan con-
trol is properly set to match the type of system (see page 8).
• Check Installer Setup, Function 1 (System Type), to make sure it is set to
match the installed heating/cooling equipment (see page 8).
• Check to make sure heating and cooling wires are not shorted together.
• Check Installer Setup, Function 1 (System Type), to make sure it is set to
match the installed heating/cooling equipment (see page 8).
• Check Installer Setup, Function 1 (System Type), to make sure it is set to
match the installed heating equipment (see page 8).
• Change Installer Setup, Function 12 (System Setting) to Manual or Auto
Changeover (see page 9).
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