Mitsubishi Electric CITY MULTI PMFY-P06NBMU-E, Technical & Service Manual

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21
1. Drain pump
Control modes Control details
HEAT mode for room temperature < Desired temperature
COOL mode for room temperature
Desired temperature
(1) HEAT mode → COOL mode
Room temperature Desired tempe 3
˚
F or 3 minutes has passed
(2) COOL mode → HEAT mode
Room temperature Desired temperature - 3
˚
F or 3 minutes has passed
1. Initial value of
operation mode
Remarks
2. Mode change
Same control as cool operation
3. COOL mode
Same control as heat operation
4. HEAT mode
Control modes Control details
1-1. Drain pump control
The drain pump turns ON for the specified amount of time when any of the
following conditions is satisfied.
(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 room
temperature 14
˚
F, and the drain sensor input is at the short or open level.
(If condition or is still being met after the drain pump has been turned ON for 6
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 satisfied:
Drain pump is ON.
Indoor piping (liquid piping) temperature – indoor room temperature 14
˚
F
(except during defrosting)
Indoor piping (liquid piping) temperature or indoor room temperature is at the
short or open level temperature.
Every 1 hour after the drain pump has been switched from ON to OFF.
Remarks
PAR-21MAA
ON/OFF
FILTER
CHECK
OPERATION
CLEAR
TEST
TEMP.
MENU
BACK DAY MONITOR/SET
CLOCK
ON/OFF
ûFûC
ûFûC
ERROR CODE
AFTER
TIMER
TIME SUN MON TUE WED THU FRI SAT
ON
OFF Hr
AFTER
FILTER
FUNCTION
ONLY1Hr.
WEEKLY
SIMPLE
AUTO OFF
8-5. AUTO OPERATION [AUTOMATIC COOL/HEAT CHANGE OVER OPERATION]
<How to operate>
1
Press POWER ON/OFF button.
2
Press the operation MODE button to display AUTO.
3
Press the TEMP. button to set the desired temperature.
NOTE : The set temperature changes 2°F when the or button is
pressed once. Automatic 67 to 83°F.
When in AUTO mode, the unit will switch from either heat or cool
automatically to maintain the set temperature.
8-6. WHEN UNIT IS STOPPED
OC341F