2WAY SYSTEM
Control Functions
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Outdoor Unit
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1
9. Defrost Control
9-4. Outdoor units where defrost occurs
Even if the total time has not reached 35 minutes, if there is 1 or more outdoor units that fulfills the defrost detec-
tion conditions, all operating outdoor units perform defrost control at the same time.
EEPROM setting in main outdoor unit
CODE: A3
* Defrost control is also performed at outdoor units where the outdoor unit heat exchanger is not functioning as
an evaporator (such as stopped outdoor units).
9-5. Defrost end judgment conditions
Defrost ends when either of the below defrost end judgment conditions is met.
Condition 1:The temperatures are 10°C or higher at all liquid temperatures sensors installed on the outdoor unit
heat exchanger. If there is any other outdoor unit where the defrost end condition has not been met,
defrostcontrol continues for all outdoor units, and system defrost control is not ended.
Condition 2:The maximum defrost time listed in the table below has elapsed.
EEPROM setting in main outdoor unit
CODE: AD
Setting No
20
21
22
XX
20 minutes
21 minutes
22 minutes
Interval of “1”
35
35 minutes (factory preset mode)
49
49 minutes
50
50 minutes
Setting No
5
6
XX
5 minutes
6 minutes
Interval of “1”
12
12 minutes (factory preset mode)
30
30 minutes
SM830186-00̲2WAY ECO-i.indb 28
SM830186-00̲2WAY ECO-i.indb 28
2010/12/24 10:09:57
2010/12/24 10:09:57
