Carrier 40MPHA - Operation Modes and Functions

10
OPERATION MODES AND FUNCTIONS
Abbreviation
Table 7—Unit Element Abbreviations
Abbreviation Element
T1 Indoor room temperature
T2 Evaporator Coil temperature
T3 Condenser Coil temperature
T4 Outdoor ambient temperature
Ts c Adjusted setting temperature
TP Compressor discharge temperature
Safety Features
Compressor Three−Minute Delay at Restart
Compressor functions are delayed for up to ten seconds upon the
first start−up of the unit, and are delayed for up to three minutes
upon subsequent unit restarts.
Automatic shutoff based on discharge temperature
If the compressor discharge temperature exceeds 226_F (108_C)
for nine seconds, the compressor ceases operation.
Automatic shutoff based on fan speed
If the indoor fan speed registers below 300RPM or over 1500RPM
for an extended period of time, the unit ceases operation and the
corresponding error code is displayed on the indoor unit.
Inverter module protection
The inverter module has an automatic shutoff mechanism based on
the unit’s current, voltage, and temperature. If automatic shutoff is
initiated, the corresponding error code is displayed on the indoor
unit and the unit ceases operation.
Indoor fan delayed operation
S When the unit starts, the louver is automaticallyactivated
and the indoor fan will operate after a period of setting
time or when the louver is in place.
S If the unit is in HEATING mode, the indoor fan is
regulated by the anti−cold wind function.
Compressor Preheating
Preheating is automatically activated when the T4 sensor is lower
than setting temperature.
Sensor redundancy and automatic shutoff
S If one temperature sensor malfunctions, the air
conditioner continues operation and displays the
corresponding error code, allowing for emergency use.
S When more than one temperature sensor malfunctions,
the air conditioner ceases operation.
Display Function
Unit Display Functions
Fig. 10 – Unit Display Functions
Table 8—Unit Function Displays
Temperature Set temperature value
Temperature
(FAN and DRYING mode)
Room temperature
Activation of Timer ON,
Fresh, Swing, Turbo, or
Silent
(3s)
Cancellation of Timer
OFF, Fresh, Swing,
Turbo, or Silent
(3s)
Defrost
Warming in heating
mode
Self-clean
Heating in room
temp under
46°F (8°C) or 54°F (12°C)
Fresh (Not available on
these systems)
ECO function
WiFi control (Not available
on these systems)
The current operation
power (Not available on
these systems)
kW
Function Display