Carrier DHMVHA Service Manual page 10

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Refrigerant Leak Detection
With this new technology, the display area displays "EC" when the
outdoor unit detects a refrigerant leak. This function is only active in the
COOLING mode. This function helps to prevent the compressor from
being damaged by a refrigerant leak or a compressor overload.
• Open Condition: When the compressor is running, the value of the
T2 coil temperature sensor has no to very little change.
Louver Position Memory Function
When starting the unit again after powering down, the louver returns to
the angle originally set by the user, however the precondition is that the
angle must be within the allowable range. If the angle exceeds the
allowable range, it memorizes the maximum angle of the louver. During
operation, if the power fails or if the end user shuts down the unit while
in the TURBO mode, the louver returns to the default angle.
46 F (8 C) Heating
° °
When the compressor is running, the indoor fan motor runs without the
ANTI-COLD air function. When the compressor is off, the indoor fan
motor is off.
Silence Operation
Press SILENCE on the remote control to initiate the SILENCE
function. When the SILENCE function is activated, the compressor
running frequency remains lower than F2 and the indoor unit emits a
faint breeze, which reduces the noise to the lowest level and creates a
quiet and comfortable space for the user.
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
Active Clean (For heat pump models which are provided with
this function)
After running in the COOLING or DRYING mode, if the user presses
"Self Clean" on the remote control, the indoor unit runs in the FAN
ONLY mode momentarily, then the low heat operation and finally runs
in FAN ONLY again. This function can keep the inside of the indoor
unit dry and prevent mold from growing within the unit.
FOLLOW ME
If the indoor PCB receives the signal, which results from pressing
FOLLOW ME on the remote control, the buzzer emits a sound which
indicates the FOLLOW ME function is initiated. However, when the
indoor PCB receives a signal from the remote control every 3 minutes,
the buzzer will not respond.
When the unit is running with the FOLLOW ME function, the PCB
controls the unit according to the temperature from the FOLLOW ME
signal, and the temperature collection function of the room temperature
sensor is shielded. However the room temperature sensor's error
detective function remains valid.
When the FOLLOW ME function is available, the PCB controls the
unit according to the room temperature from the remote control and the
setting temperature. The PCB responds to the mode change information
received from the remote control signal, however it will not be affected
by the setting temperature.
When the unit is in the FOLLOW ME mode, if the PCB does not
receive a signal from the remote control for 7 minutes or after pressing
FOLLOW ME again, the FOLLOW ME function turns off
automatically, and the temperature controls the unit according to the
room temperature detected from its own room temperature sensor and
setpoint.
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