Midea MHC-V10W/D2N1, Installation & Owner'S Manual, Page: 44 / 96

42
About HEAT MODE SETTING
HEAT MODE SETTING
HEAT MODE SETTING typically consists of the following
1. HEAT MODE: Enable or disable the HEAT mode
2.
Selecting the range of target outlet water temperature
3.
4.
5.
Setting the temperature difference for starting the unit
6. t_INTERVAL_H: Setting the compressor start time interval
About AUTO SETTING
AUTO MODE SETTING
Controlling AUTO mode typically consists of the following
：
1. T4AUTOCMIN
：
setting the minimum operating ambient temperature
for cooling
2.T4AUTOHMAX: setting the maximum operating ambient temperature
for heating
How to set the AUTO mode
To determine whether the AUTO mode is effective, go to
MENU> FOR SERVICEMAN> AUTO MODE SETTING. Press OK.
The following page is displayed.
How to set the Heat mode
To determine whether the HEAT mode is effective, go to MENU>
FOR SERVICEMAN> HEAT MODE SETTING. Press OK. The
following page be displayed:
When the cursor is on T4HMAX T4HMIN dT1SH
dTSH or t_INTERVAL_H , Use ◄► and ▼▲ to scroll and adjust
the parameter.
dT1SC is the temperature difference between T1 (actual outlet water
temperature) and T1S (target outlet water temperature) for starting
the unit in cool mode. Only when T1 is high enough will the unit turn
on, and will turn off if T1 drops to a certain value. See the diagram below:
T4HMAX is the maximum ambient operating temperature for heat
mode. The unit will not work if the ambient temperature is higher.
T4HMIN is the minimum ambient operating temperature for heat
mode. The unit will turn off if the ambient temperature is lower.
The relationship between the operation of the unit and ambient
temperature can be seen in the picture below:
dT1SH is the temperature difference between T1 and T1S for
starting the unit in heat mode.
When the target outlet water temperature T1S<47, the unit will
turn on or off as described below :
When the target outlet water temperature T1S≥47, the unit will on or
off as described below
：
t_INTERVAL_H is the compressor start time interval in heat mode.
When the compressor stops running, the next time that the
compressor turns on should be “ t_INTERVAL_H” and one minute
later at least.
4 AUTO MODE SETTING
HEAT MODE SETTING
HIGH
YES NON
When the cursor is on HEAT MODE, Use◄► to scroll to YES or
NON and press OK to enable or disable the heat mode. When the
cursor is on the T1S RANGE, use ◄► to scroll to YES or NON and
press OK to select the range of outlet water temperature. When
LOW is selected, the maximum target temperature is 55°C. If
climate-related curve function (corresponds to “weather temperature
set” in the user interface) is enabled, the curve selected is low
temperature curve. When
HIGH is selected, the maximum target
temperature is 60°C. If climate-related curve function (corresponds
to “weather temperature set” in the user interface) is enabled, the
curve selected is high temperature curve.
dTSH is the temperature difference between Ta (Ta is the room
temperature) and TS for starting the unit when ROOM TEMP is
enabled in TEMP.TYPE SETTING (refer to
10.7 Field
setting/TEMP.TYPE SETTING ). Only when Ta drops to a certain
value will the unit turn on, and the unit will turn off if the Ta high
enough. See diagram below. (only when ROOM TEMP is enabled
will this function be available).
dTSC is the temperature difference between Ta (actual room
temperature) and TS (target room temperature) To start the unit
when ROOM TEMP is enabled in TEMP.TYPE SETTING (refer
to
10.7 Field setting/TEMP.TYPE SETTING ). Only when the Ta is
high enough will the unit turn on, and the unit will turn off if the Ta
drops to a certain value. Only when the ROOM TEMP is enabled
will this function be available. See picture below:
OFF
COOL
T4
OFF
T4CMAX
T4CMIN
T1S+dT1SC
OFF
COOL
T1
TS+dTSC
OFF
COOL
Ta
HEAT
OFF
OFF
T4
T4HMIN T4HMAX
T1S+dT1SH
OFF
HEAT
T1
MIN(T1S+dT1SH,65)
OFF
HEAT
T1
TS+dTSH
OFF
HEAT
Ta