English
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In case of the malfunction with the code in white letters
on the black background in the unit still operates.
However, be sure to have it inspected and repaired
and as soon as possible.
If other than the above error codes are displayed,
there is a possibility that the problem in question has
occurred with a combined air conditioner or outdoor
unit. See the operation manuals included with the air
conditioners or outdoor units for details.
5.3
IF THE SYSTEM DOES NOT PROPERLY OPERATE
EXCEPT FOR THE ABOVE MENTIONED CASE, AND
NONE OF THE ABOVE MENTIONED MALFUNC-
TIONS IS EVIDENT, CONTACT YOUR DEALER, AND
REQUEST FOR INVESTIGATION THE SYSTEM
ACCORDING TO THE FOLLOWING PROCEDURES
BY A QUALIFIED SERVICE PERSON
The following malfunctions must be cheched by a qualified
service person. Do not check by yourself.
•
The unit does not operate at all.
a. Check if there is a power failure.
After power has been restored, start operation again.
b. Check if the fuse has blown.
Change the fuse.
c. Check if breaker has worked.
Contact your dealer.
d. Are there any problems with the power or wiring?
Inspect the power and wiring.
e. Are there any problems with the fan unit?
Inspect the fan motor and fan.
•
Amount of discharged air is small and the discharging
sound is high.
a. Check if the air filter and heat exchange element are
clogged. (Check both SA and RA air filter. Check both
sides of elements.)
Clean the air filter and heat exchange element.
•
Amount of discharged air is large and so is the sound.
a. Check if the air filter and heat exchange element are not
installed.
Install the air filter and heat exchange element.
•
It dries usually in winter. <VKM-GAMV1 series only>
a. Is the water supply service valve open?
Open the water supply service valve.
b. Have you lowered setting on the humidistat (locally pro-
cured) too far?
Correct the setting.
•
Humidifies very little or not at all. <VKM-GAMV1 series only>
a. Is there water in the water supply tank?
b. Is water being supplied?
Inspect the water supply pipes and supply the water.
c. Is the strainer clogged?
Clean the strainer.
d. Is the solenoid valve broken (i.e. won’t open)?
Replace the solenoid valve.
e. Is the humidifier element torn?
Replace.
f. Has the water resistance of the humidifier element dropped?
Replace the humidifier element.
g. Are the control circuits broken?
Replace the printed circuit board and other electric parts.
h. Is the float switch broken?
Replace the float switch.
i. Is the water supply pressure sufficient?
Re-set it so that there is sufficient pressure.
j. Is there foreign matter in the feed water tank?
Clean the feed water tank.
After-sales service and warranty
After-sales service:
WARNING
• Do not modify the unit.
This may cause electric shock or fire.
• Do not disassemble or repair the unit.
This may cause electric shock or fire.
Contact your dealer.
• If the refrigerant leaks, keep out of fire.
The refrigerant used in this unit is safe.
Although the refrigerant does not usually leak, if the refriger-
ant leaks out into a room and comes in contact with the com-
bustible air in the equipment such as fan heater, stove, oil
(gas) cooker, etc., it will cause toxic gas to be generated.
When a refrigerant leakage failure has been repaired, con-
firm a service person that the leakage point has been cor-
rected surely before restarting operation.
• Do not remove or reinstall the unit by yourself.
Incomplete installation may cause a water leakage electric
shock and fire.
Contact your dealer.
When asking your dealer to repair, inform related
staff of the details as follows:
• Shipping date and installation date:
• Malfunction:
Inform the staff of the defective details.
(Malfunction code being displayed on
the remote controller.)
• Name, address, telephone number
Repair where the warranty term is expired
Contact your dealer. If necessary to repair, pay service is
available.
Minimum storage period of important parts
Even after a certain type of air conditioner is discontinued,
we have the related important parts in stock for 6 years at
least.
The important parts indicate parts essential to operate the air
conditioner.
Recommendations for maintenance and inspec-
tion
Since dust collects after using the unit for several years, the
performance will be deteriorated to some extent.
Taking apart and cleaning inside require technical expertise,
so we recommend entering a maintenance and inspection
contract (at a cost) separate from normal maintenance.
Recommended inspection and maintenance
cycles
[Note: The maintenance cycle is not the same as
the warranty period.]
Table 1 assumes the following usage conditions.
• Normal use without frequent starting and stopping of the
machine.
(Although it varies with the model, we recommend not start-
ing and stopping the machine more than 6 times/hour for
normal use.)
• Operation of the product is assumed to be 10 hours/day,
2500 hours/year.
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