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11. 2 Perform a test run according to the outdoor
unit’s installation manual.
(1) Make sure the electric parts box of the unit is closed
before turning on power.
(2) Make a test run following the operation manual of the
outdoor unit.
•
The operation lamp of the remote controller will flash
when an malfunction occurs. Check the malfunction code
on the liquid crystal display to identify the point of trouble.
An explanation of malfunction codes and the correspond-
ing trouble is provided in “CAUTION FOR SERVICING” of
the outdoor unit.
If the display shows any of the following, there is a possi-
bility that the wiring was done incorrectly or that the
power is not on, so check again.
11. 3 Next, run the humidifier.
〈〈〈〈
VKM-GMV1 series only
〉〉〉〉
(1) Check that the water supply piping is connected securely.
(2) Open the water supply shut-off valve. (No water will be
supplied at this time.)
(3) Run the HRV unit in heating mode.
(See the operating manual included with the indoor unit
for details on how to run the unit in heating mode.)
The water supply will start and the humidifier will begin
operation.
(4) After starting heating (humidifying), the sound of the
water supply solenoid valve will be heard every
3 or 4 minutes (a clicking sound), so listening for that
clicking sound let the unit run for 30 minutes to make
sure that humidifying operation is normal.
CAUTION
•
If carpentry work is not completed when a test run is fin-
ished, tell the customer not to run the humidifier for the pro-
tection of indoor unit and HRV until it is completed.
•
If the humidifier is run, paint, particles generated from
adhesive and other materials used for carpentry work may
cause HRV to get dirty, causing splash or leakage of water.
Remote controller display
Content
“
” is display
• There is a short circuit at the FORCED
OFF terminals (T1, T2)
“
” is display
• The test-run has not be performed.
“
” is display
“
” is display
• The power on the outdoor unit is off.
• The outdoor unit has not been wired for
power supply.
• Incorrect wiring for the transmission
wiring and the wiring
〈
the remote con-
troller wiring or FORCED OFF wiring.
〉
• The transmission wiring is cut.
“
” is display
• “MAIN/SUB” setting of the remote
controller is wrong.
No display
• The power on the indoor unit and HRV
is off.
• The indoor unit and HRV has not been
wired for power supply.
• Incorrect wiring for the remote control-
ler wiring and the wiring
〈
the transmis-
sion wiring or the FORCED OFF
wiring.
〉
• The remote controller wiring is cut.
01_3P130768-1A_En.fm Page 15 Wednesday, March 23, 2005 7:00 PM