56
OCH754A
(5) Operation data during emergency operation
During emergency operation, no communication is performed with the indoor unit, so the data items needed for operation
are set to the following values:
Intake temperature (TH1)
Indoor fluid pipe temperature (TH2)
Indoor 2-phase pipe temperature (TH5)
Set temperature
Outdoor pipe temperature (TH3)
Outdoor 2-phase pipe temperature (TH6)
Outdoor air temperature (TH7)
Temperature difference code
(intake temperature - set temperature) (Tj)
Discharge superheat (SHd)
Sub-cool (SC)
Operation mode
COOL
81°F [27°C]
41°F [5°C]
41°F [5°C]
77°F [25°C]
113°F [45°C]
122°F [50°C]
95°F [35°C]
5
54°F [30°C]
9°F [5°C]
HEAT
69°F [20.5°C]
113°F [45°C]
122°F [50°C]
72°F [22°C]
41°F [5°C]
41°F [5°C]
45°F [7°C]
5
54°F [30°C]
9°F [5°C]
*1
*1
*1
*1
*2
Remarks
*1: If the thermistor temperature data is normal (not open/short), that data is loaded into the control as valid data.
If the unit enters emergency operation because TH values have become mismatched, setting the thermistors
to open/short corrects the settings.
*2: If one thermistor is set to open/short, the values for each will be different.
[Example] When pipe temperature thermistor (TH3) has an open or short circuit.
COOL
113°F [45°C]
Ta
Tc
41°F [5°C]
41°F [5°C]
Te
HEAT
41°F [5°C]
Tb
Td
122°F [50°C]
113°F [45°C]
Tf
Thermistor
TH3
TH6
TH4
TH5
TH2
T
63HS
Regard normal figure as effective data.
Regard normal figure as effective data.
Regard normal figure as effective data.
Discharge superheat (SHd)
Cooling = TH4
−
T
63HS
= Tc
−
Te
Heating = TH4
−
T
63HS
= Tf
Degree of subcooling (SC)
Cooling = T
63HS
−
TH3 = Te
−
113°F [45°C]
Heating = T
63HS
−
TH2 = Tf
−
113°F [45°C]
Operation data
Содержание SUZ-KA24NAHZ
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