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38
The units run with T3
<
3
for 80 minutes and T3 keeps
℃
lower than TCDI+2
f
℃
or more than 3
minutes.
----T4
<
0
,
℃
If the 1
st
condition and 2
nd
condition items are satisfied, then the program judges if T2 has decreased
more than 5
.When T2 has decreased more than 5
, enter the defrosting mode.
℃
℃
----No matter what value of the T4 is and whether the T2 drops more than 5
or not
℃
, 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 enter defrosting mode.
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
.
℃
----T3 keeps to be higher than TCDE2
℃
for 80 seconds.
----The machine has run for 10 minutes in defrosting mode.
Defrosting action
:
For 9k,12k models:
Compressor
on
off
on
on
on
off
off
off
4-way valve
Outdoor fan
Indoor fan
Indoor fan breeze(10s)
xx
10s
no longer than 10m
30s
FrequencyF8
10s
Frequency F2
XX=60.
Summary of Contents for 38HVM109303P
Page 13: ...13 5 2 Outdoor Unit MOC 09HFN1 MW0W MOC 12HFN1 MV0W MOF 18HFN1 MU0W...
Page 14: ...14 MOG 24HFN1 MT0W...
Page 29: ...29 If T4 5 or the compressor starts running the preheating function will stop...
Page 47: ...47 9 2 2 Indoor outdoor units communication error diagnosis and solution E1...
Page 48: ...48 9 2 3 Fan speed has been out of control diagnosis and solution E3 E7...
Page 50: ...50 9 2 4 Open circuit or short circuit of temperature sensors diagnosis and solution E5 E6...
Page 51: ...51 9 2 5 IPM malfunction or IGBT over strong current protection diagnosis and solution P0...
Page 52: ...52 9 2 6 Over voltage or over low voltage protection diagnosis and solution P1...
Page 54: ...54 9 2 9 Inverter compressor drive error diagnosis and solution P4...