Mitsubishi Electric CITY MULTI PQRY-P200YMF-B Service Handbook page 37

(3) Check points for test run when mounting options
Built-in optional parts
Mounting of drain
1
water lifting-up
mechanism
2
3
Mounting of perme- Check humidifier operations and water
able film humidifier supply status in heating (test run) mode.
(4) Attention for mounting drain water lifting-up mechanism
Work
Disassembling and 1
assembling of drain
water lifting-up
mechanism
2
3
4
5
Mounting of float Float switch installed without contacting
switch with drain pan?
1
Electric wiring
2
3
Content of test run
Release connector of pump circuit,
check error detection by pouring
water into drain pan water inlet.
After that, connect connector of
circuit.
Check pump operations and drain-
age status in cooling (test run) mode.
Content of test run
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 dealt with as shown in the right
figure?
Drain pan and piping cover mounted
without gap?
Drain pan hooked on cut projection
of the mechanism?
No mistakes in wiring?
Connectors connected surely and
tightly?
No tension on lead wire when sliding
control box?
Check point
Local remote controller displays code
No. "2503", and the mechanism stops.
No overflow from drain pan.
Drain water comes out by operations of
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.
Check point
1
Float switch moves smoothly.
Float switch is mounted on
2
mounting board straightly without
deformation.
Float switch does not contact with
3
copper pipe.
Wiring procedure is exactly followed.
Connector portion is tightly hooked.
–34–
Result
Result
Insulation pipe
No gap