Mitsubishi Electric CITY MULTI PEFY-P06NMAU-E4 Technical & Service Manual page 29

[ VII Microprocessor Control ]
Chart 2 show how heater is on.
The software has the function to turn on electric heater 5 minutes after turning on remote controller in case that outdoor unit
cannot operate in heating mode because the system is in cooling priority mode. This function is available when function setting
No.123 is set to "2".
During Error?
During Defrost?
Cooling Priority
mode?
No
Function setting
No.123=2?
Rooms temp does
not rise in X min
Electric Heater OFF
*1. The heater will not turn on in the error of TH1 thermistor or fan motor.
*2. See WT06231 for the details of this function.
*3. X (time delay) default is 20 min and changeable by function setting, see Table 3.
HWE20150
Start
*1
No
No
*2
Yes
Yes
No
*3
No
Yes
Yes
No
5 min
passed?
Yes
Electric Heater ON
- 22 -
Yes
GB