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1.Input Parameter Compensation and Calibration
(1) Check the ambient temperature compensation function
Indoor ambient temperature compensation function
a. In cooling mode, the indoor ambient temperature participating in computing control = (T
indoor ambient temperature
–
△
T
cooling indoor ambient temperature compensation
)
b. In heating mode, the indoor ambient temperature participating in computing control= (T
indoor ambient temperature
–
△
T
heating indoor ambient temperature compensation
)
(2) Check effective judgment controls of parameters
Effective judgment function of the outdoor exhaust temperature thermo-bulb When conditions a and b are satisfied, the outdoor exhaust
temperature thermo-bulb is judged not to be connected into place, the mainboard of outer units will display failure of the outdoor
exhaust temperature thermo-bulb (not connected into place), stop the machine for repairing, and resume the machine by remote
controls of ON/OFF.
a. Judgment of exhaust detection temperature change: After the compressor starts up and runs for 10 minutes, if the compressor
frequency f ≥ 40Hz, and the rising value T
exhaust
(T
exhaust (after start-up for 10 minutes)
- T
exhaust (before start-up)
) < 35.6°F, the outdoor exhaust
temperature thermo-bulb can be judged not to be connected into place (judging once when the power is on the first time).
b. Comparative judgment of exhaust detection temperature and condenser detection temperature (T
pipe temperature
=
T
outdoor pipe temperature in cooling mode
, T
pipe temperature
= T
indoor pipe temperature in heating mode
): After the compressor starts up and runs for 10 minutes, if
the compressor frequency f ≥ 40Hz, and T
pipe temperature
≥(T
exhaust
+ 37.4°F), the outdoor exhaust temperature thermo-bulb can be judged
not to be connected into place (judging once when power is on the first time).
2. Basic Functions
(1) Cooling Mode
1. Conditions and processes of cooling operation:
(1) If the compressor is shut down, and [T
setup
– (T
indoor ambient temperature
–
△
T
cooling indoor ambient temperature compensation)
]≤ 32.9 °F, start up the
machine for cooling, the cooling operation will start;
(2) During operations of cooling, if 32°F ≤ [T
setup
– (T
indoor ambient temperature
–
△
T
cooling indoor ambient temperature compensation)
] < 35.6 °F, the cooling
operation will be still running;
(3) During operations of cooling, if 32°F≤ [T
setup
– (T
indoor ambient temperature
–
△
T
cooling indoor ambient temperature compensation)
], the cooling operation will
stop after reaching the temperature point.
2. Temperature setting range
(1) If T
outdoor ambient temperature
≥ [T
low-temperature cooling temperature
], the temperature can be set at: 61~86°F (Cooling at room temperature);
(2) If T
outdoor ambient temperature
< [T
low-temperature cooling temperature
], the temperature can be set at: 77~86°F (Cooling at low temperature), that is,
the minimum setting temperature for outer units judgment is 77°F).
(2)Drying Mode
1. Conditions and processes of drying operations: Same as the cooling mode;
2. The temperature setting range is: 61~86°F;
(3) Air-supplying Mode
1. The compressor, outdoor fans and four-way valves are switched off;
2. The temperature setting range is: 61~86°F.
(4) Heating Mode
1. Conditions and processes of heating operations: (T
indoor ambient temperature
is the actual detection temperature of indoor environment
thermo-bulb,
△
T
heating indoor ambient temperature compensation
is the indoor ambient temperature compensation during heating operations)
(1) If the compressor is shut down, and [(T
indoor ambient temperature
–
△
T
heating indoor ambient temperature compensation
) – T
setup
] ≤ 32.9°F, start the
machine to enter into heating operations for heating;
(2) During operations of heating, if 32°F ≤ [(T
indoor ambient temperature
–
△
T
heating indoor ambient temperature compensation
) – T
setup
] < 35.6°F,the heating
operation will be still running;
(3) During operations of heating, if 35.6°F ≤ [(T
indoor ambient temperature
–
△
T
heating indoor ambient temperature compensation
) – T
setup
], the heating
operation will stop after reaching the temperature point.
2. The temperature setting range in this mode is: 61~86°F.
3. Special Functions
Defrosting Control
①
Conditions for starting defrosting
After the time for defrosting is judged to be satisfied, if the temperature for defrosting is satisfied after detections for continuous 3minutes,
the defrosting operation will start.
②
Conditions of finishing defrosting
The defrosting operation can exit when any of the conditions below is satisfied
③
Toutdoor pipe temperature ≥ (T
outdoor ambient temperature
– [T
temperature 1 of finishing defrosting
];
④
The continuous running time of defrosting reaches [t
max. defrosting time
].
