Daikin Altherma HT Wartungshandbuch Seite 78

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Seitenansicht 77
Protection Control ESIE09-08A
66 Function
4.3 Discharge Pipe Protection Control
This discharge pipe protection control is used to protect the compressor internal temperature against a
malfunction or transient increase of discharge pipe temperature.
INV compressor [R-410A]
INV compressor [R-134a]
HTdi>115°C
Tp>135°C
HTdi :
Tp :
or
36 Hz Unload
HTdi>115°C
Tp>135°C
or
HTdi>135°C
HTdi>120°C for 10 min. or more.
or
HTdi<110°C
Tp<125°C
&
After 30 sec.
After 20 sec.
or
HTdi<100°C
Tp<110°C
&
Value of INV compressor discharge pipe
temperature (Tdi) compensated with outdoor
air temperature
Value of compressor port temperature
calculated by Tc and Te, and suction
superheated degree.
INV upper limit frequency:
1-step down from current
compressor frequency
In discharge pipe temp.
protection control
HTdi>130°C
HTdi>120°C
for 90 sec.
or more.
INV upper limit frequency: 1-step up
from current compressor frequency
Discharge pipe
temperature standby
When occurring 3 times within 100 minutes,
the malfunction code “F3” is output.
Discharge pipe protection
control not limited
HTdi>115°C
HTdi :
min frequency
frequency match
HTdi>115°C
or
HTdi>135°C
HTdi>120°C for 10 min. or more
or
HTdi<100°C
within 10 min after defrosting
and
After 30 sec.
After 20 sec.
or
HTdi<110°C
HTdi<100°C
max INV freq = max RPS for each HP
or
Value of INV compressor discharge pipe
temperature (Tdi) compensated with outdoor
air temperature
INV upper limit frequency:
1-step down from current
compressor frequency
In discharge pipe temp.
protection control
HTdi>130°C
HTdi>120°C for more than
90 sec.
INV upper limit frequency: 3-step up
from current compressor frequency
INV upper limit frequency: 1-step up
from current compressor frequency
Discharge pipe
temperature standby
When occurring 3 times within 100 minutes,
the malfunction code “F3” is output.
Discharge pipe protection
control not limited
After 20 sec.
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