When Unit Is Stopped Control Mode - Mitsubishi Electric City Multi PLFY-P08NCMU-E Technical & Service Manual

9-5. AUTO OPERATION [AUTOMATIC COOL/HEAT CHANGE OVER OPERATION]
TIME SUN MON TUE WED THU FRI SAT
TIMER
AFTER
ERROR CODE
û Fû C
°F °C
ONLY1Hr.
TEMP.
MENU ON/OFF
BACK MONITOR/SET DAY
OPERATION
PAR-21MAA CLOCK
Control modes
1. Initial value of
HEAT mode for room temperature < Desired temperature
operation mode
COOL mode for room temperature
2. Mode change
(1) HEAT mode → COOL mode
Room temperature
(2) COOL mode → HEAT mode
Room temperature
Same control as cool operation
3. COOL mode
Same control as heat operation
4. HEAT mode

9-6. WHEN UNIT IS STOPPED CONTROL MODE

Control modes
1. Drain pump
1-1. Drain pump control
The drain pump turns ON for the specified amount of time when any of the
following conditions is met (regardless of whether the compressor is ON or OFF)
ON for 3 minutes after the operation mode is switched from COOL or DRY to another
operation mode (HEAT mode).
ON for 6 minutes after the drain sensor is determined to be submerged using the
liquid level detection method given below.
ON for 6 minutes after indoor piping (liquid piping) temperature – indoor intake
temperature
(If condition
minutes, the drain pump is kept ON for a further 6 minutes.)
1-2. Liquid level detection method
The liquid level is detected by determining whether or not the drain sensor is
submerged, based on the amount the temperature rises after self-heating the
sensor.
This process is performed if any of the following conditions is met:
Drain pump is ON.
Indoor piping (liquid piping) temperature – indoor intake temperature 14°F
(except during defrosting)
Indoor piping (liquid piping) temperature or indoor intake temperature is at the short
or open level temperature.
Every 1 hour after the drain pump has been switched from ON to OFF.
<How to operate>
1 Press POWER ON/OFF button.
2 Press the operation MODE button to display AUTO.
Hr ON
AFTER OFF
FUNCTION
3 Press the TEMP. button to set the desired temperature.
FILTER
WEEKLY
SIMPLE NOTE: The set temperature changes 1°F(2°F) when the
AUTO OFF
ON/OFF
FILTER
CHECK TEST
CLEAR
Desired temperature + 3°F or 3 minutes has passed
Desired temperature - 3°F or 3 minutes has passed
14°F, and the drain sensor input is at the short or open level.
or is still being met after the drain pump has been turned ON for 6
pressed once. Automatic 67 to 83°F
Variable range of the set temprature depends on the remote controller
which is applied.
"AUTO" works to change the operation mode either to cooling or heat-
ing according to the room temperature.
Control details
Desired temperature
Control details
21
or button is
Remarks
Remarks