Operating Features And Care; Troubleshooting - Carrier Niceday 42PHQ K Series Owner's Manual

42PHW / 42PHQ / 42PHQ...K
Operating features and care - Troubleshooting
Operating conditions
• Temperature ranges suitable for unit operation are as follows.
MODE
COOL
HEAT
DRY
• if the unit operates beyond max. temperature conditions for a
long time, system diagnostics may detect a malfunction and the
unit will not operate properly.
• If the unit operates for a long time under abnormal conditions
with extremely high humidity, condensed water may drip from the
unit.
Time delay
• If you start operation after the power is turned off, there will be a
3/5 minute time delay until the compressor turns on.
• When heating operation starts, hot air delivery might be delayed
due to a warm-up period.
Minimum operation time
• In normal operation, there is a minimum operation time of 3
minutes between the compressor turning on and turning back off.
Heating features
(for heat pump models only)
• If the unit starts in heating mode, there will be a preheating
period before the unit is ready to deliver warm air.
• If the outdoor temperature is low, heating capacity will be
reduced. If the room air is not warm enough during severe winter
conditions, use additional heating devices.
Defrost operation
(for heat pump models only)
• In heating mode, if the outdoor coil is frosted, the indoor fan and
outdoor fan will turn off while the compressor will turn on to
remove the frost on the outdoor coil.
• The system will operate again when frost is removed from the
outdoor unit.
Auto recovery
• If the power fails while the unit is operating, the unit memorizes
the operating condition, and it will start operation automatically
when the power is restored or turn off, depending on the
configuration of the remote control.
Indoor unit frost prevention
If the unit operates at a low ambient temperature, frost may
appear on the indoor coil. If the indoor coil temperature is below
0°C, the microcomputer stops the compressor to protect the unit
from frost.
Normal operation
Any of the following can occur during normal operation:
• A gurgling noise can sometimes be heard during operation or
when the unit stops.
- This is the sound of the refrigerant flowing through the unit.
• Bad odours can come from the unit.
- Odours such as smoke or cosmetics can accumulate while
room air circulates through the unit.
- Cleaning the filters will reduce this problem.
• The outdoor fan does not rotate during heating operation.
(For heat pump models only).
- The unit is in defrost mode.
• A crackling sound can sometimes be heard during operation or
when the unit turns on.
- It is the sound of plastic expanding due to an abrupt
temperature change.
GB - 12
INDOOR OUTDOOR
21~32°C 21~43°C
Max. 27°C Max. 21°C
17~32°C 12~43°C

Troubleshooting

Trouble / Check points /
ACTION
Unit does not operate:
• Has the circuit breaker tripped or the fuse blown?
RESET THE CIRCUIT BREAKER OR REPLACE THE FUSE WITH THE SPECIFIED
.
REPLACEMENT FUSE
• Has there been a power failure?
RESTART OPERATION WHEN THE POWER IS RESTORED
• Does the green light flash on and off?
CALL YOUR SERVICE REPRESENTATIVE
• Is the voltage too low?
CONFIRM THE AVAILABLE VOLTAGE
Cooling is abnormally low:
• Is the filter blocked with dust?
.
CLEAN THE AIR FILTER
• Has the temperature been set properly?
CHECK AND RESET IT IF NECESSARY
• Are the windows or doors open?
CLOSE THE WINDOWS AND DOORS
• Is anything obstructing the outdoor unit?
.
REMOVE THE OBSTRUCTION
• Is the fan speed too low?
CHANGE THE FAN SPEED SELECTION
• Is the operation mode FAN or AUTO?
CHANGE TO COOLING OPERATION OR RESET
Heating is abnormally low (for heat pump models only):
• Is the filter blocked with dust?
.
CLEAN THE AIR FILTER
• Has the temperature been set too low?
CHECK AND RESET IT IF NECESSARY
• Are the windows or doors open?
CLOSE THE WINDOWS AND DOORS
• Is anything obstructing the outdoor unit?
.
REMOVE THE OBSTRUCTION
Unit stops during operation:
• Is the OFF timer operating?
.
RESTART THE OPERATING MODE
• Does the green light flash on and off?
CALL YOUR SERVICE REPRESENTATIVE
ATTENTION:
If the above actions do not correct the problem, consult the dealer
from whom you bought the unit.
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