Carrier 53KLE Service Maintenance Manual page 27

TROUBLE CHART (Cont.)
TROUBLE
When pressing stop button, unit does
not acknowledge signal with a beep.
When pressing any function button,
the remote control shows the function
requested on the display, but unit
does not acknowledge signal receipt
with a beep and does not carry out the
function.
When pressing any button, display will
not change
Air conditioner will not start.
REASON
Remote control batteries are exhausted.
Remote control has not been pointed
correctly to the receiver of indoor unit.
There are obstacles (curtains, walls, etc.)
between the remote control and the
indoor unit
Receiver on the indoor unit or the remote
control is under intense sun radiation.
Signal transmission is obstructed by
severe interference from an
electromagnetic field.
Main switch is OFF.
Remote control batteries are exhausted.
Remote control has not been pointed
correctly to the receiver of indoor unit.
There are obstacles (curtains, walls, etc.)
between the remote control and the
indoor unit
Receiver on the indoor unit or the remote
control is under intense sum radiation.
Signal transmission is obstructed by
severe interference from an
electromagnetic field.
The triangle symbols 2 ▲is on, as
another signal is being transmitted.
Main supply switch is OFF
Fuses or main switch are blown
Protection against frequent compressor
cycling is ON
Selected temperature is higher than the
room temperature in the cooling mode (or
lower in the heating mode).
26
ACTION
Replace batteries.
Turn remote control OFF and repeat the
operation in the correct direction.
Repeat the operation after having
removed the obstacles.
Avoid direct sun on the unit, shut curtains
or shades.
Avoid sending signals when computers or
household appliances (Food processors,
coffee makers, etc.) are operating close
by cellular or cordless telephones may
also interfere with the control.
Switch it to ON position.
Replace batteries.
Turn remote control OFF and repeat the
operation in the correct direction.
Repeat the operation after having
removed the obstacles.
Avoid direct sun on the unit, shut curtains
or shades.
Avoid sending signals when computers or
household appliances (Food processors,
coffee makers, etc.) are operating close
by cellular or cordless telephones may
also interfere with the control.
Wait for signal 2 ▲ to disappear and
repeat the operation.
Switch to ON
Replace fuses
Wait for 3 minutes.
Correct selected temperature.