Mitsubishi Electronics PCFY-P30NKMU-E, PCFY-P15NKMU-E Microprocessor Control, How to operate

Page 13

6 MICROPROCESSOR CONTROL

INDOOR UNIT CONTROL 6-1. COOL OPERATION

 

 

TIME SUN MON TUE WED THU FRI SAT

 

 

 

TIMER

Hr ON

 

 

 

AFTER

AFTER OFF

 

 

 

ERROR CODE

FUNCTION

 

ûFûC

 

ûFûC

FILTER

 

 

 

WEEKLY

 

 

ONLY1Hr.

 

SIMPLE

 

 

 

AUTO OFF

 

TEMP.

 

 

ON/OFF

 

MENU

ON/OFF

 

FILTER

BACK

MONITOR/SET

DAY

 

CHECK TEST

PAR-21MAA

CLOCK

OPERATION

CLEAR

<How to operate>

 

 

Press POWER ON/OFF button.

 

 

Press the operation MODE button to display COOL.

 

 

Press the TEMP. button to set the desired temperature.

 

 

NOTE: The set temperature changes 2°F when the

or

button is

pressed one time. Cooling 67 to 87°F

 

 

Control modes

 

Control details

Remarks

1. Thermoregulating

1-1. Thermoregulating function (Function to prevent restarting for 3 minutes)

 

function

• Room temperature

desired temperature + 2°F ···Thermo ON

 

 

• Room temperature

desired temperature ···Thermo OFF

 

1-2. Anti-freezing control

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.

2. Fan

By the remote controller setting (switch of 4 speeds+Auto)

 

 

 

 

 

 

Type

Fan speed notch

 

 

4 speeds + Auto type

[Low], [Med2], [Med1], [High], [Auto]

 

When [Auto] is set, fan speed is changed depending on the value of:

 

Room temperature - Desired temperature

13

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Contents Parts Catalog OCB450 ContentsPart Names and Functions Wired remote controller Specifications SpecificationSound Level Electrical Parts SpecificationsPCFY-P15NKMU-E PCFY-P24NKMU-E NC CurvesCmmcfm How to read curvesFront View Pcfy Gas pipe side/flared connection PCFY-P15, 24, 30, 36NKMU-E Wiring DiagramUnit mm inch Service Ref Refrigerant System DiagramPCFY-P15NKMU-E PCFY-P24NKMU-E PCFY-P30NKMU-E PCFY-P36NKMU-E Ø12.7 1/2 Ø15.88 5/8Room temperature Desired temperature How to operateMicroprocessor Control Indoor Unit Control 6-1. Cool OperationFloat switch control Pressed one time. Dry 67 to 87F DRY OperationControl modes Control details Remarks Thermo regulating Drain pump Same control as Cool operation VaneFAN Operation Pressed one time. Heating 63 to 83F Heat OperationDisplay in Heat operation Defrost Fan Control detailsFrom the preceding Control modes Control details Remarks Fan Thermo OFF modeAuto Operation Automatic COOL/HEAT Change Over Operation When Unit is StoppedDown TroubleshootingLinear expansion valve Closing a valve 1 → 2 → 3 → 4 → Trouble shootingBecome OFF ValveSensor signal check Function of DIP Switch How to set address High ceiling On SWA settingSwitch Match the indoor unit’s refrigerant pipe with the BC How to set branch number SW14 Series R2 onlyOperation by switch Effective Switch PoleJumper Pattern aPCFY-P15NKMU-E PCFY-P24NKMU-E PCFY-P30NKMU-E PCFY-P36NKMU-E Test Point DiagramSW1 Operating Procedure Photos & Illustrations Disassembly ProcedurePCFY-P15NKMU-E PCFY-P24NKUM-E PCFY-P30NKMU-E PCFY-P36NKMU-ERemoving the fan motor and right side fan Removing the room temperature thermistor TH21Removing the side panel Removing the fan 3 connectionRemove the screw from the side panel, and remove Side panel by sliding the panel to the frontRemoving the under panel Removing the vane motorRemoving the drain pan TH23 Removing the pipe thermistors/Liquid TH22 and GasRemoving the guide vane Removing the Auto vaneRemove 2 screws from the heat exchanger Removing the heat exchanger and LEVRemove the heat exchanger with LEV Page New publication, effective Feb

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