Troubleshooting Tips; Troubleshooting Guide - INVENTOR V4MVI-12WFR Operating Instructions Manual

TROUBLESHOOTING TIPS

Troubleshooting tips
The following events may occur during normal operation, and may not indicate malfunction.
Symptom
To prevent blowout of the fuse, the compressor will not operate while the
Operation is delayed
protection circuit is working for about 3 minutes after sudden OFF--ON
after restart
operation of the power supply.
Automatically happens in heating mode :
Fan speed changes-
--prevents cold air blowing onto occupants when the heating operation is
start,
off, very slow and
--perform automatic defrosting operation,
then normal
--perform low temperature heating operation
Heating operation
In HEAT mode, the indoor unit temporarily stops for maximum of 10
minutes to perform the automatic defrosting operation.
stops suddenly and
defrost-light blinks
In COOL mode, a mist generated by condensation formed with sudden
Mist coming out of
cooling process may be emitted.
the indoor unit Mist may generate due to moisture generated from defrosting process
when the air conditioner restarts in HEAT mode operation after defrosting.
Hissing sound-- during operation or immediately after stopping the air
Low volume sounds
conditioner, refrigerant flowing sound may be head.
are emitted by the
Squeaking sound-- normal expansion and contraction of plastic and metal
air conditioner
parts caused by temperature change during the operation.
Rushing air-- when louver resets its position.
May occur when air conditioner is used for the first time or has not been
Dust discharges from
used for a long time.
the unit
Various smells generated from interior textile, furniture, or cigarette smoke
Emits a peculiar
absorbed into the air conditioner may be emitted. If not the case call your
odour
suitable contractor.
Room temperature reaches the temperature setting of the remote control.
Changes to fan only
If not the case call your suitable contractor.
while cooling or
heating mode
Interference from cell phone towers and remote boosters may cause the
Operation is erratic,
unit to malfunction
unpredictable or
Disconnect the power and then re-connect.
unresponsive
Press the ON/OFF button on the remote controller to restart operation.
NOTE: If the problem is not resolved, please contact a local dealer or the nearest customer
service center. Be sure to inform them of the detailed malfunctions and unit model number.
Cause
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Troubleshooting guide

Before you call for or request servicing, troubleshoot a problem by performing following checks:
Symptom
-- Is there a power failure?
-- Has a switch been turned off, a circuit breaker tripped or a fuse blown?
Unit will not operate
-- Is the timer operating?
-- Are the batteries used in the remote controller exhausted?
-- Are the batteries used in the remote controller loaded properly?
-- Are the air filters dirty?
-- Is air flow unrestricted in & out of indoor & outdoor units?
-- Are the temperature and mode settings correct?
-- Are the windows or doors left opened?
Poor cooling or
-- Is fan speed on high and louvers allowing maximum flow?
heating performance
-- Is direct or strong sunlight shinning into the room in cooling operation?
-- Are there other heating apparatus or computers operating, or too many
people in the room in cooling operation?
, ,
-- Is the SILENCE function is activated? Under SILENCE operation,
noise reduction is prioritized and the air-conditioning performance may
become lower.
Indicator lamps
continue flashing
-- The unit may stop operation or continue to run in a safety condition
(depending on models). Waiting for about 10 minutes, the fault may be
recovered automatically, if not, disconnect the power and then connect it
Error code appears
in again. If the problem still exists, disconnect the power and contact the
in the indoor unit,
nearest customer service center.
such as: E0,E1,E2....
P1,P2,P3.....or F1, F2,
F3.....
If the problem persists even if you perform these checks or diagnostics, immediately stop operation
and contact the authorized service center. Be sure to inform them of the detailed malfunctions and
unit model number.
CAUTION
In the case of ANY of the following, turn off the unit immediately!
-- Power cord is damaged or abnormally warm.
-- Burning odous are smelled.
-- Loud or abnormal sounds are heard.
-- A power fuse blows or a circuit breaker trips frequently.
-- Water or other objects fall into or out of the unit.
DO NOT ATTEMPT TO CORRECT THESE ITEMS YOURSELF!
CONTACT A AUTHORIZED SERVICE PROVIDER!
TROUBLESHOOTING TIPS
Diagnostic
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