Classic MROHC09AS, Руководство по обслуживанию

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For MWOHC24S model:
T1-Ts
For 9k, 12k
models:
Frequency F2 FrequencyF8
2.5¡ãC(36.5¡ãF)
2.0¡ãC(35.6¡ãF)
1.5¡ãC(34.7¡ãF)
1.0¡ãC(33.8¡ãF)
Compressor
4-way valve
Outdoor fan
Indoor fan
on
off
on
off
on
off
on
off
8.4.3.4 Defrosting mode
Indoor fan breeze(10s)
10s
xx
10s
Condition of defrosting:
----T4 ＞ 0°C(32°F),
When the units are running, if the following two
items are satisfied, the units start defrosting:
xx=60s.
no longer than 10m 30s
The units run with T3
＜
3°C(37.4°F), for 40
minutes and T3 keeps lower than TCDI°C for
more than 3 minutes.
For 18k, 24k models:
on
The units run with T3 ＜ 3°C(37.4°F) for 80
minutes and T3 keeps lower than
TCDI+2°C(35.6°F) for more than 3 minutes.
----T4
＜
0°C(32°F),
If the 1
st
condition and 2
nd
condition items are
satisfied, then the program judges if T2 has
decreased more than 5°C(41°F).When T2 has
decreased more than 5°C(41°F), enter the
Compressor
4-way valve
Outdoor fan
Indoor fan
off
on
off
on
off
on
off
10s
defrosting mode.
----No matter what value T4 is, if the machine
runs with T3
＜
3°C(37.4°F) for more than 120
Indoor fan breeze(10s)
xx
10s
minutes and T3 keeps lower than
TCDI+4°C(39.2°F) for more than 3 minutes, the
machine will enter defrosting mode no matter if
T2 drops more than 5°C(41°F) or not.
XX=90.
no longer than 10m 30s
Condition of ending defrosting:
If any one of the following items is satisfied, the
defrosting will finish and the machine will turn to
normal heating mode.
----T3 rises to be higher than TCDE1°C.
----T3 keeps to be higher than TCDE2°C for 80
seconds.
----The machine has run for 10 minutes in
defrosting mode.
Defrosting action
：
8.4.3.5 Evaporator coil temperature
protection
----T2> TEH2 °C, the compressor running
frequency decreases to the lower level and
runs for 20s.
When the frequency decreases to F2 and the
T2 is still over TEH2 °C for 3 minutes, the
compressor will stop.
----T2<48°C(118.4°F) or T2 stays in
48°C(118.4°F)~TEH2 °C for 6 minutes, the
Frequency F2 Frequency F8
Low
Medium
High