Troubleshooting - Trane 15 Series Installer's Manual

Installer's Guide

Troubleshooting

Improper operation may lead to personal injury or casualty.
• Turn off the main power switch immediately if a malfunction is detected. Contact the
installing dealer or qualified service technician. If the unit continues to run during a
malfunction, the unit may be damaged or electric shock or fire may occur.
• Do not try to move or reposition the units. Please contact the servicing/installing dealer to
repair or move the units.
• Check the following items before contacting the dealer or qualified service technician.
Unit doesn't run
Mist comes from the unit
Sound comes from the unit
The unit blows out dust
The unit emits odor
Indoor unit still runs
after switch off
Mode conflict
NOTE: If the problem persists after checking the above items and taking appropriate measures,
please stop operation of the unit immediately and contact your local service agency or dealer.
Diagnostics and repairs should be completed by a professional service technician.
38
Condition
When unit is started
immediately after it is just
turned off
When power is turned on
When cooling cycle starts
Slight cracking sound is heard
when unit starts
There is sound when cooling
There is sound when unit
starts or stops
There is slight sound when
unit is running or after running
Cracking sound is heard when
unit is operating and after
operating
When the unit has been off for
a period of time.
When the unit is operating
After every indoor unit
receives the "stop" signal, fan
will keep running
COOL or HEAT mode can not
be operated
WARNING
Overload protection switch delays unit start up for
three minutes
The unit is in standby for one minute
Indoor high humidity air is cooled rapidly
This sound occurs when the electronic expansion
valve initializes.
The sound of gas refrigerant flowing in unit
This sound occurs when gas refrigerant starts or
stops flowing.
The sound of the drainage system operating.
This sound occurs when the unit panels expand
or contract due to temperature change.
Dust in indoor unit is blown out
The room odor absorbed by the unit is blown out
again
Indoor fan motor will keep running 20-70 seconds
to use excess cooling and heating and prepare
for the next operation
When the indoor operating mode conflicts with
that of the outdoor unit, the indoor fault indicator
will flash and conflict will be shown on the wired
controller after 5 minutes. Indoor unit stops
running and the outdoor unit changes its mode
of operation to match the indoor unit, then the
unit will go back to normal. COOL mode doesn't
conflict with DRY mode. FAN mode doesn't
conflict with any mode.
Possible Reason
88-M4MHW15-1D-EN