DC inverter ARV Individual Series technical manual
84
In heating mode, the temperature of Tdef is higher than 10
℃
for 1 minute, or the temp. of Tdef is higher
than 15
℃
for 10 seconds.
Relation between defrosting progress and other progress
Defrosting is prior, except the protections.
Low pressure protection is not activated during defrosting.
Control priority
:
1
、
protections
;
2
、
defrosting
;
3
、
oil return
3.7.8 Oil return control
During low frequency operation, the outdoor will come to the oil return program every
2-4 hours
to
reclaim the oil accumulated in the indoor units. The EXV of the indoor units are open with fixed degree,
and the oil return program lasts for 6 minutes.
3.7.9 Protection function
Compressor restart protection
The compressor can start up until 3 minutes later after the last stop.
Discharge temp. protection
When the discharge temp. is too high, the compressor will reduce the running frequency to control the
discharge temp.
D
isch
arge
temp.
Td
(
℃
)
10s late protection happen.3 minutes later can start up;
3-time protection in 60 minutes, should reset the outdoor.
Reduced by 2rps/s
Reduced by 1rps/s
Reduced by 1rps/10s
Constant frequency
Increase by1rps/10s
Normal operation
115
℃
113
℃
112
℃
110
℃
109
℃
107
℃
105
℃
104
℃
103
℃
102
℃
101
℃
100
o
C
Summary of Contents for ANB66FVAMT
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