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TROUBLESHOOTING
Instructions relating to heating (*) are applicable only to
“HEAT PUMP MODEL”.
WARNING
In the event of a malfunction (burning smell, etc.), immediately
stop operation, disconnect the power supply plug or turn off
the circuit breaker, and consult authorized service personnel.
Merely turning off the unit’s power switch will not completely
disconnect the unit from the power source. Always be sure to
disconnect the power supply plug or turn off your circuit breaker
to ensure that power is completely off.
Before requesting service, perform the following checks:
NORMAL FUNCTION
Doesn’t operate immediately:
●
If the unit is stopped and then immediately started again,
the compressor will not operate for about 3 minutes, in or-
der to prevent fuse blowouts.
●
Whenever the power supply plug is disconnected and then
reconnected to a power outlet, the protection circuit will op-
erate for about 3 minutes, preventing unit operation during
that period.
Noise is heard:
●
During operation and immediately after stopping the unit,
the sound of water flowing in the air conditioner’s piping
may be heard. Also, noise may be particularly noticeable for
about 2 to 3 minutes after starting operation (sound of cool-
ant fl owing).
●
During operation, a slight squeaking sound may be heard.
This is the result of minute expansion and contraction of the
front cover due to temperature changes.
*
●
During Heating operation, a sizzling sound may be heard
occasionally. This sound is produced by the Automatic De-
frosting operation. (See page 7)
Smells:
●
Some smell may be emitted from the indoor unit. This smell
is the result of room smells (furniture, tobacco, etc.) which
have been taken into the air conditioner.
Mist or steam are emitted:
●
During Cooling or Dry operation, a thin mist may be seen
emitted from the indoor unit. This results from the sudden
Cooling of room air by the air emitted from the air condi-
tioner, resulting in condensation and misting.
*
●
During Heating operation, the outdoor unit’s fan may stop,
and steam may be seen rising from the unit. This is due to
the Automatic Defrosting operation. (See page 7)
Airfl ow is weak or stops:
*
●
When Heating operation is started, fan speed is temporarily
very low, to allow internal parts to warm up.
*
●
During Heating operation, if the room temperature rises
above the temperature setting, the fan of indoor unit starts
and stops. If you wish to warm the room further, set the pre-
set temperature to a higher setting.
*
●
During Heating operation, the unit will temporarily stop
operation (between 4 and 15 minutes) as the Automatic
Defrosting mode operates. During the Automatic Defrosting
operation, the OPERATION indicator lamp (green) will fl ash.
(See page 7)
●
The fan may operate at very low speed during Dry opera-
tion or when the unit is monitoring the room’s temperature.
●
In the monitor AUTO operation, the fan will operate at very
low speed.
Water is produced from the outdoor unit:
*
●
During Heating operation, water may be produced from the
outdoor unit due to the Automatic Defrosting operation. (See
page 7)
Instructions relating to heating (*) are applicable only to
“HEAT PUMP MODEL”.
CHECK ONCE MORE
Doesn’t operate at all:
●
Has the circuit breaker been turned off?
●
Has there been a power failure?
●
Has a fuse blown out, or a circuit breaker been tripped?
Poor Cooling (or Heating) performance:
●
Is the timer operating? (See page 4 to 5)
●
Is the air fi lter dirty?
●
Are the air conditioner’s intake grille or outlet port blocked?
●
Did you adjust the room temperature settings correctly?
●
Is there a window or door open?
●
In the case of Cooling operation, is a window allowing bright
sunlight to enter? (Close the curtains.)
●
In the case of Cooling operation, are there heating appara-
tus and computers inside the room, or are there too many
people in the room?
The unit operates differently from the remote control unit’s
setting:
●
Are the remote control unit’s batteries dead? (See page 2)
●
Are the remote control unit’s batteries loaded properly? (See
page 2)
Signal is not received after replacing the batteries for the
remote control unit:
●
Are you using an air conditioner signal code other than sig-
nal code A? (See page 6)
If the problem persists after performing these checks, or if you
notice burning smells, or the TIMER indicator lamp (orange) and
OPERATION indicator lamp (green) fl ashes, stop operation im-
mediately, disconnect the power supply plug, and consult with
authorized service personnel.
SPECIFICATIONS
REMOTE CONTROLLER (WIRELESS TYPE)
MODEL
UTY-LNH
POWER
DC 3 V
DIMENSIONS &
WEIGHT
HEIGHT
170 mm
WIDTH
56 mm
DEPTH
19 mm
WEIGHT
85 g (w/o batteries)
AMP Air Conditioning
www.ampair.co.uk | sales@ampair.co.uk
