M thermal Mono       
90    202005 
Midea M thermal Mono Engineering Data Book 
which the heat pump provides heated water to the space heating terminals. When TS – Ta ≥ dTSH the heat pump provides 
heated water to the space heating terminals and when Ta ≥ TS the heat pump does not provide heated water to the space 
heating  terminals.  Refer  to  Figure  3-7.16.  dTSH  is  only  relevant  if  YES  is  selected  for  ROOM  TEMP  in  the  TEMP.  TYPE 
SETTING menu. Refer to Part 3, 7.8 “TEMP. TYPE SETTING Menu”.  
 
t_INTERVAL_H sets the heating mode compressor re-start delay. When the compressor stops running, it will not re-start 
until at least t_INTERVAL_H minutes have elapsed.   
 
T1SetH1 sets the temperature 1 of automatic setting curve for heating mode. 
 
T1SetH2 sets the temperature 2 of automatic setting curve for heating mode. 
 
T4H1 sets the ambient temperature 1 of automatic setting curve for heating mode. 
 
T4H2 sets the ambient temperature 2 of automatic setting curve for heating mode. 
 
ZONE1 H-EMISSION sets the emission type for heating mode. 
 
ZONE2 H-EMISSION sets the emission type for heating mode. 
 
7.7  AUTO MODE SETTING Menu 
MENU > FOR SERVICEMAN > AUTO MODE SETTING 
 
In AUTO MODE SETTING the following parameters should be set. 
 
T4AUTOCMIN sets the  ambient  temperature below  which  the  heat  pump will 
not provide chilled water for space cooling in auto mode. Refer to Figure 3-7.18. 
 
T4AUTOHMAX sets the ambient temperature above which the heat pump will 
not provide heated water for space heating in auto mode. Refer to Figure 3-7.18. 
 
Figure 3-7.18: T4AUTOCMAX, T4AUTOCMIN 
Abreviations: 
HP: Heat pump 
AHS: Additional heating source 
IBH: Backup electric heater 
T4CMAX: The ambient temperature above which the heat pump will not operate in cooling 
mode. 
T4HMIN: The ambient temperature below which the heat pump will not operate in heating 
mode. 
 
 
   
Figure 3-7.17: AUTO MODE SETTING menu 
17°C
25°C
4 AUTO. MODE SETTING
4.1 T4AUTOCMIN
4.2 T4AUTOHMAX
ADJUST