–30–
(3)
Check points for test run when mounting options
Built-in optional parts
Content of test run
Check point
Result
Mounting the drain
water lift-up
mechanism
Mounting the perme-
able film humidifier
Release connector of pump circuit,
and check error detection by pouring
water into drain pan water inlet.
Next, connect the connector of the
circuit.
Check pump operations and drainage
status in cooling (test run) mode.
Check humidifier operations and
water supply status in heating (test
run) mode.
Local remote controller displays code No.
“2503,” and the mechanism stops.
No overflow from drain pan.
Drain water is discharged by the drain
pump.
Sound of pump operations is heard, and
drain water comes out.
No water leak from connecting portions
of each water piping.
Water is supplied to water supply tank,
and float switch is operating.
1
2
3
Work
Content of test run
Check point
Result
Disassembling and
assembling the drain
water lift-up mecha-
nism
Mounting the float
switch
Electric wiring
Lead wire from control box not
damaged.
Rubber cap properly inserted to drain
water outlet of drain pan?
Insulation pipe of gas and liquid pipes
should be as shown in the right
figure.
Hook the drain pan on the cut
projection of the mechanism.
Drain pan on the cut projection of the
mechanism?
Float switch installed without contacting the
drain pan?
Confirm that wiring is correct.
Connectors connected securely and
tightly?
No tension on lead wire when sliding
control box?
Float switch moves smoothly.
Float switch is mounted on mount-
ing board straight without deforma-
tion.
Float switch does not contact
copper pipe.
Wiring procedure is exactly followed.
Connector portion is tightly hooked.
1
2
3
4
5
1
2
3
1
2
3
No gap
Insulation pipe
(4)
Notes on mounting drain water lifting-up mechanism
