Microprocessor Control - Mitsubishi Electric PCFY-P15NKMU-E Technical & Service Manual

6

MICROPROCESSOR CONTROL

INDOOR UNIT CONTROL
6-1. COOL OPERATION
TIME SUN MON TUE WED THU FRI SAT
TIMER Hr
AFTER AFTER
ERROR CODE
û Fû C
û Fû C
ONLY1Hr.
TEMP.
MENU ON/OFF
BACK MONITOR/SET DAY
OPERATION
PAR-21MAA CLOCK
Control modes
1-1. Thermoregulating function (Function to prevent restarting for 3 minutes)
1. Thermoregulating
function
1-2. Anti-freezing control
By the remote controller setting (switch of 4 speeds+Auto)
2. Fan
When [Auto] is set, fan speed is changed depending on the value of:
Room temperature - Desired temperature
<How to operate>
Press POWER ON/OFF button.
ON
Press the operation MODE button to display COOL.
OFF
FUNCTION
FILTER
Press the TEMP. button to set the desired temperature.
WEEKLY
SIMPLE
AUTO OFF
NOTE: The set temperature changes 2°F when the
ON/OFF
FILTER
CHECK TEST
CLEAR
• Room temperature desired temperature + 2°F ···Thermo ON
• Room temperature desired temperature ···Thermo OFF
Detected condition : When the liquid pipe temp. (TH22) is 32°F or less in 16
minutes from compressors start up, anti-freezing control
starts and the thermo OFF.
Released condition : The timer which prevents reactivating is set for 3 minutes,
and anti-freezing control is cancelled when any one of the
following conditions is satisfied.
Liquid pipe temp. (TH22) turns 50°F or above.
The condition of the thermo OFF has become complete
by thermoregulating, etc.
The operation modes became mode other than COOL.
The operation stopped.
Type
4 speeds + Auto type
pressed one time. Cooling 67 to 87°F
Control details
Fan speed notch
[Low], [Med2], [Med1], [High], [Auto]
13
or button is
Remarks