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Owner’s Manual
EN-33
EN-34
11
When the Following Symptoms are Found
Check the points described below before asking repair servicing.
Symptom
Cause
It is not a failure.
Outdoor unit
• White misty cold air or
water is out.
• Fan of the outdoor unit stops automatically and performs defrost
operation.
• Sometimes, noise of air
leak is heard.
• Solenoid valve works when defrost operation starts or finishes.
Indoor unit
• “Swish” sound is heard
sometimes.
• When the operation has started, during the operation, or immediately
after the operation has stopped, a sound such as water flows may be
heard, and the operation sound may become larger for 2 or 3 minutes
immediately after the operation has started.
They are flowing sound of refrigerant or draining sound of dehumidifier.
• Slight clacking sound is
heard.
• This is sound generated when heat exchanger, etc. expand and contract
slightly due to change of temperature.
• Discharge air smells.
• Various smell such as one of wall, carpet, clothes, cigarette, or cosmetics
adhere to the air conditioner.
• “
” indication is lit.
• When cooling or “FAN” mode operation cannot be performed because
another indoor unit performs heating operation.
• Is outdoor temperature out of operation temperature range?
• “
” indication is lit.
• When the manager of the air conditioner has fixed the operation to COOL
or HEAT, and an operation contrary to the setup operation is performed.
• “
” indication is lit.
• When stopping the fan to prevent cool air blow at starting heating.
• Sound or cool air is
output from the stand by
indoor unit.
• Since refrigerant is flowed temporarily to prevent stay of oil or refrigerant
in the stand by indoor unit, sound of flowing refrigerant, may be heard or
white steam when other indoor unit operates in HEAT mode, and cold air
in COOL mode may be blow-out.
• When power of the air conditioner is
turned on, “Ticktock” sound is heard.
• Sound is generated when the expansion valve operates when power has
been turned on.
• LCD blurs when it is touched.
• LCD may temporarily blur by static electricity.
• Fan and louvers of the indoor unit moves
when the unit is not operated.
• Intermittent operation of the fan with louvers open is sometimes carried
out for the refrigerant recovery control of unoperated unit.
C
heck again.
Operates or stops automatically.
• Is the timer “ON” or “OFF”?
Does not operate.
• Is it a power failure?
• Is the power switch turned off?
• Is the power fuse or breaker blown?
• Has the protective device operated? (The operation lamp goes on.)
• Is the timer “ON”? (The operation lamp goes on.)
• Are COOL (or FAN) and HEAT selected simultaneously?
(“
” indication is lit on the display of the remote controller.)
• Is outdoor temperature out of operation temperature range?
Air is not cooled or warmed sufficiently.
• Is the air intake or air discharge of the outdoor unit obstructed?
• Are any door or window open?
• Is the air filter clogged with dust?
• Is discharge louver of the indoor unit set at appropriate position?
• Is air selection set to “LOW” “MED”, and is the operation mode set to
“FAN”?
• Is the setup temp. the appropriate temperature?
• Are COOL and HEAT selected simultaneously?
(“
” indication is lit on the display of the remote controller.)
• Is outdoor temperature out of operation temperature range?
CAUTION
If any of the following conditions occur, turn off the main power supply switch and immediately contact the dealer:
• Switch operation does not work properly.
• The main power fuse often blows out, or the circuit breaker is often activated.
• A foreign matter or water fall inside the air conditioner.
• When the air conditioner does not operate even after the cause of the protective device activation has been removed.
(The operation lamp and on the remote controller are flashing. When and a combination of , , , , or
and a number are displayed on the remote controller, also inform a qualified service person of the display content.)
• Any other unusual conditions are observed.
Confirmation and check
When a trouble occurred in the air conditioner, the check code and the
indoor unit No. appear on the display part of the remote controller.
The check code is only displayed during the operation.
If the display disappears, operate the air conditioner according to the
following “Confirmation of error history” for confirmation.
Confirmation of error history
When a trouble occurred on the air conditioner, the trouble history can
be confirmed with the following procedure. (The trouble history is
stored in memory up to 4 troubles.)
The history can be confirmed from both operating status and stop
status.
1. Check the troubles according to the above procedure.
2. Ask an authorized dealer or qualified service (maintenance) professional to repair or maintain the air conditioner.
3. More details of the check code are explained in Service Manual.
Procedure
Description
1
When pushing
and
buttons at the same
time for 4 seconds or more, the following
display appears.
If [ Service check] is displayed, the mode
enters in the trouble history mode.
• [01 : Order of trouble history] is displayed in
CODE No. window.
• [Check code] is displayed.
• [Indoor unit address in which an error occurred] is displayed in UNIT No.
2
Every pushing of [TEMP.
/
] button used to set temperature, the trouble history
stored in memory is displayed in order.
The numbers in CODE No. indicate CODE No. [01] (latest) to [04] (oldest).
CAUTION
Do not push
button because all the trouble history of the indoor unit will be deleted.
3
After confirmation, push
button to return to the usual display.
Check code
Indoor unit No. in which
an error occurred
3
2
1
SET
TIME
TIMER SET
TEST
FILTER
LL
RESET
TEMP.
CL
FAN
SAVE
A
A
SWING/FIX
VENT
MODE
ON / OFF
UNIT LOUVER
1FAN_OM_EHV0000101-01.book Page 17 Thursday, September 13, 2018 5:10 PM
