Carrier Harmony 53VMC18A-H Service And Maintenance Manual page 42

TROUBLE SHOOTING (Cont.)
TROUBLE
Outdoor fan stopped or cycling on
overload
After batteries have been placed into
the remote control, the display is not lit.
When pressing the recessed lock
adjustment button, hour figures on
display do not flash.
When pressing any button, all symbols
appear on display.
When pressing start button, unit does
not acknowledge signal with a beep.
OR
When pressing stop button, unit does
not acknowledge signal with a beep.
OR
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.
REASON
Detective fan motor capacitor
Loose leads at fan motor
Fan motor burned out
Motor bearing sized
Batteries are exhausted or have the wrong
polarity.
Recessed button has not been pressed
correctly.
Recessed button for time setting is blocked due
to excessive pressure during use.
Remote control has been irreversibly damaged.
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 sun radiation.
Signal transmission is obstructed by severe
interference from an electromagnetic field.
19
ACTION
Replace
Check for cause and eliminate
Replace
Check for cause and eliminate
Replace batteries or check polarity.
Press with a round point, avoid
exerting strong pressure
Check and repair.
Replace with a new one.
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.