Midea MSC-09HRDN1-QD0(E), Руководство по обслуживанию

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30
drops more than 5
℃
.
T2 initial record:
a) In anti-cold-wind control, if indoor fan is setting speed, T2 will be recorded after 5 minutes of reaching
setting temperature.
b) In anti-cold-wind control, if indoor fan is low speed, breeze or fan pause, the maximum value of T2 will
be recorded in this process.
Condition 3. No matter what value T4 is, if the machine runs with T3
＜
3
℃
for more than 120 minutes and T3
keeps lower than ( TCDI +4)
℃
for more than 3 minutes, the machine will defrost, no matter if T2 drops for more
than 5
℃
or not.
Remark: That means that no matter what condition is, only when T3
＜
3
℃
PCB begins to time, if the machine
runs for more than 120 minutes and T3 keeps lower than start temperature( TCDI +4) for 3 minutes, it begins to
defrost and are not restricted by T2.
2) Condition of ending defrosting.
If any one of following items is satisfied, defrosting will finish and the machine will turn to normal heating mode.
a) T3 rises to be higher than TCDE1
℃
.
b) T3 rises to be higher than TCDE2
℃
and remains for 80 seconds.
c) The machine has run for 10 minutes in defrosting.
9.7.10 Defrosting action.
9.7.11 Rating capacity test function.
1) Set the indoor unit with remote controller as: high fan, 30
℃
in heating mode, then press “TURBO” button on
controller 6 times or more within 10 seconds(make sure indoor unit receives these signals), the machine will
turn into rating capacity test mode, the buzzer will make a “di” sound for 2 seconds continuously. Also, indoor
fan will change to rating speed( RAHFAN ), the frequency of compressor will be fixed as rating value( RATIFH ).
Any condition of above is not satisfied, the machine can not be turned into rating capacity test mode.
2) The machine will quit from the rating capacity test mode if running for 5 hours or changing fan speed or setting
temperature.
3) In this mode, if indoor heat exchanger high temperature protection or start and operation frequency limit
caused by general protection occurs, compressor will not run as rating frequency any more, but indoor fan will
still run as rating speed. When the frequency limit is released, the machine will resume rating capacity test. If
on
off
on
off
on
off
on
off
compressor
4-way valve
outdoor fan
indoor fan
indoor fan breeze 10s
60s
70s
no longer than 10 minutes 30s
F8