Installation manual

12 3P130767-4K English
b. Have you lowered setting on the humidistat (locally pro-
cured) too far?
Correct the setting.
•
Humidifies very little or not at all. <VKM-GBMV1 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.
6 AFTER-SALES SERVICE AND WARRANTY
6.1 AFTER-SALES SERVICE
WARNING
• Do not modify the unit.
This may cause electric shock or a fire.
• Do not disassemble or repair the unit.
This may cause electric shock or a fire.
Contact your local dealer.
• If the refrigerant leaks, keep out of a 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 a fire.
Contact your local dealer.
 WHEN ASKING YOUR LOCAL 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 local 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
INSPECTION
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 MAINTE-
NANCE 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.
• Table 1 “Inspection Cycle” and “Maintenance Cycle” Lists
*1:
• You can make a simple check such as below way.
To check the wind flow, hold a bar of which the end has a
string or other similar lightweight item over the supply grille
and exhaust grille.
*2:
• When the solenoid valve fails, the remote controller does not
display any error code.
Usage under that status will lead to insufficient humidification
and increased tap water consumption.
The solenoid valve should be checked at the beginning of the
heating season.
Note 1
This table indicates main parts.
See the maintenance and inspection contract for details.
Note 2
This maintenance cycle indicates recommended lengths of
time until the need arises for maintenance work, in order to
ensure the product is operational as long as possible.
Use for appropriate maintenance design (budgeting mainte-
nance and inspection fees, etc.).
Depending on the content of the maintenance and inspection
contract, the inspection and maintenance cycles may in reality
be shorter than those listed here.
Name of Main Part
Inspection
Cycle
Maintenance Cycle
[replacements and/
or repairs]
Electric motor (fan,
damper, etc.)
1-2 months
recom-
mended *1
20,000 hours
Printed circuit boards
1 year
25,000 hours
Heat exchanger
element
10 years
Heat exchanger 5 years
Sensor (thermistor) 5 years
Remote controller and
switches
25,000 hours
Drain pan 8 years
Expansion valve 1 year *2 20,000 hours
Electromagnetic valve 1 year 20,000 hours
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