Daikin SkyAir RZQ200 · 250C7Y1B Service Manual page 80

SiBE26-701
Defrost activation temperature
Using field setting switches (see P69), the temperature to activate defrosting can be shifted as
follows:
When defrosting conditions are met during heating operation, the indoor unit is demanded
defrosting and the following control is performed:
[Defrost control]
[Defrost ending condition]
If the following conditions are met in one minute after defrosting starts, defrosting operation
ends, however, the maximum length of operation is 10 minutes.
2.4.6.2 Oil Recovery Operation
A prolonged operation of the compressor under low frequency may result in insufficient oil level
because of poor oil recovery. For this reason, oil recovery operation is performed for 10
minutes while increasing the compressor operation frequency (INV=165 Hz).
Oil recovery operation is available only in cooing operation.
Function and Operation
Evaporating
Temperature(ºC)
-10
-9
Defrosting start
74Hz
Compressor
(INV)
4 way valve
Electronic
expansion valve
Outdoor unit
fan
Indoor unit
fan
Pressure
equalizing
solenoid valve
·
Outdoor heat exchanger temperature (Tb) ≥10ºC
·
OR
·
Discharge pipe temperature (Tdi, Tds) ≥105ºC
OR
·
Discharge pressure (Hp)>3.04MPa
Compressor Running Time
Heating
Outside air
temperature (ºC)
1
-5
5
4degUP
-3
-5
-7
Defrost activation range
Defrosting complete
218Hz
200pls
50 sec.
Max. Integral Capacity Value
Diminishing Integral Capacity
Defrosting
+ 6ºC
(Mode 3)
+ 4ºC
(Mode 2)
Factory setting
OFF
ON
OFF
Open degree is adjusteddepending on
the degree of suction gas superheat
ON
OFF
ON
OFF
ON
OFF
Outdoor Unit
69