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(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
27
, 81°F
5
, 41°F
5
, 41°F
25
, 77°F
45
, 113°F
50
, 122°F
35
, 95°F
5
30degC,54degF
5degC, 9degF
HEAT
20.5
, 69°F
45
, 113°F
50
, 122°F
22
, 72°F
5
, 41°F
5
, 41°F
7
, 45°F
5
30degC,54degF
5degC, 9degF
(
+
1)
(
+
1)
(
+
1)
(
+
1)
(
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2)
Remarks
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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.
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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
45
, 113°F
Ta
Tc
5
, 41°F
5
, 41°F
HEAT
5
, 41°F
Tb
Td
50
, 122°F
45
, 113°F
Thermistor
TH3
TH6
TH4
TH5
TH2
Regard normal figure as effective data.
Regard normal figure as effective data.
Discharge superheat (SHd)
Cooling = TH4 - TH6 = Tc - Ta
Heating = TH4 - TH5 = Td - (50
or 122°F)
Degree of subcooling (SC)
Cooling = TH6 - TH3 = Ta - (45
or 113°F)
Heating = TH5 - TH2 = 50
- 45
= 5 degC.
or
= 122°F - 113°F = 9degF
Operation data
Содержание Mr.Slim PUZ-HA30NHA2
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