Carrier 38QH30-C, Руководство по техническому обслуживанию, Страница: 20 / 22

19
TROUBLE SHOOTING (Cont.)
TROUBLE REASON ACTION
Head pressure too low Low refrigerant charge
Restriction in liquid tube
Indoor section air filter dirty
Check for leaks, repair and recharge
Remove restriction
Clear filter
Excessive section pressure Reversing valve hung up or internal leak
Internal pressure relief open
Refrigerant over charged
Replace
Check for source and eliminate
Purge excess refrigerant
Suction pressure too low
(Low pressure control cuts-out & pilot
light for low pressure control lights off)
Low refrigerant charge
Indoor unit frosted
Low indoor air or short cycling
Restriction in suction tube
Capillary or accurate restricted or ice clogged
Check for leaks, repair and recharge
See next trouble
Eliminate cause, check for fan working
Locate restriction and remove
Blow refrigerant, evacuate system and
recharge
Outdoor fan stopped or cycling on
overload
Detective fan motor capacitor
Loose leads at fan motor
Fan motor burned out
Motor bearing sized
Replace
Check for cause and eliminate
Replace
Check for cause and eliminate
After batteries have been placed into
the remote control, the display is not lit.
Batteries are exhausted or have the wrong
polarity.
Replace batteries or check polarity.
When pressing the recessed lock
adjustment button, hour figures on
display do not flash.
Recessed button has not been pressed
correctly.
Press with a round point, avoid exerting
strong pressure
Recessed button for time setting is blocked due
to excessive pressure during use.
Check and repair. When pressing any button, all symbols
appear on display.
Remote control has been irreversibly damaged. Replace with a new one.
Main switch is OFF. Switch it to ON position.
Remote control batteries are exhausted. Replace batteries.
Remote control has not been pointed correctly
to the receiver of indoor unit.
Turn remote control OFF and repeat the
operation in the correct direction.
There are obstacles (curtains, walls, etc.)
between the remote control and the indoor unit
Repeat the operation after having
removed the obstacles.
Receiver on the indoor unit or the remote
control is under intense sun radiation.
Avoid direct sun on the unit, shut curtains
or shades.
When pressing start button, unit does
not acknowledge signal with a beep.
Signal transmission is obstructed by severe
interference from an electromagnetic field.
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.