Mitsubishi PLFY-P80VAM-A.UK, PLFY-P100VAM-A.UK, PLFY-P125VAM-A.UK Service Manual

SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS

No. OC260

TECHNICAL & SERVICE MANUAL

Series PLFY	Ceiling Cassettes R407C R22
Indoor unit
[Model names]	[Service Ref.]

PLFY-P80VAM-A

PLFY-P100VAM-A

PLFY-P125VAM-A

PLFY-P80VAM-A.UK PLFY-P100VAM-A.UK PLFY-P125VAM-A.UK

CONTENTS

1. SAFETY PRECAUTION ·········

2. PART NAMES AND FUNCTIONS·····

3. SPECIFICATION·············

4. 4-WAY AIR FLOW SYSTEM········

5. OUTLINES AND DIMENSIONS ······

6. WIRING DIAGRAM···········

7. REFRIGERANT SYSTEM DIAGRAM ·12

8. TROUBLE SHOOTING··········

9. DISASSEMBLY PROCEDURE······ INDOOR UNIT 10 . PARTS LIST ··············

11. OPTIONAL PARTS ···········

1 SAFETY PRECAUTION

Cautions for using with the outdoor unit which adopts R407C refrigerant.

· Do not use the existing refrigerant piping.

-The old refrigerant and lubricant in the existing piping contains a large amount of chlorine which may cause the lubricant of the new unit to deteriorate.

· Use “low residual oil piping”.

-If there is a large amount of residual oil (hydraulic oil, etc.) inside the piping and joints, deterioration of the lubricant will result.

·Store the piping to be used during installation indoors and keep both ends of the piping sealed until just before brazing. (Store elbows and other joints in a plastic bag.)

-If dust, dirt, or water enters the refrigerant cycle, deterioration of the oil and compressor trouble may result.

·Use ESTR , ETHER or HAB as the lubricant to coat flares and flange connection parts.

Use liquid refrigerant to seal the system.

-If gas refrigerant is used to seal the system, the composition of the refrigerant in the cylinder will change and performance may drop.

· Do not use a refrigerant other than R407C.

-If another refrigerant (R22, etc.) is used, the chlorine in the refrigerant may cause the lubricant to deteriorate.

· Use a vacuum pump with a reverse flow check valve.

-The vacuum pump oil may flow back into the refrigerant cycle and cause the lubricant to deteriorate.

2

[1] Service tools

Use the below service tools as exclusive tools for R407C refrigerant.

No.	Tool name	Specifications
1	Gauge manifold	·Only for R407C.
		·Use the existing fitting SPECIFICATIONS. (UNF7/16)
		·Use high-tension side pressure of 3.43MPa·G or over.
2	Charge hose	·Only for R407C.
		·Use pressure performance of 5.10MPa·G or over.

3Electronic scale

4	Gas leak detector	·Use the detector for R134a or R407C.
5	Adapter for reverse flow check.	·Attach on vacuum pump.

6Refrigerant charge base.

7 Refrigerant cylinder.	·For R407C	·Top of cylinder (Brown)
	·Cylinder with syphon

8Refrigerant recovery equipment.

[2]Notice on repair service

·After recovering the all refrigerant in the unit, proceed to working. ·Do not release refrigerant in the air.

·After completing the repair service, recharge the cycle with the specified amount of liquid refrigerant.

[3] Refrigerant recharging

(1) Refrigerant recharging process

1Direct charging from the cylinder.

·R407C cylinder are available on the market has a syphon pipe. ·Leave the syphon pipe cylinder standing and recharge it.

(By liquid refrigerant)

Unit

Gravimeter

(2) Recharge in refrigerant leakage case

·After recovering the all refrigerant in the unit, proceed to working. ·Do not release the refrigerant in the air.

·After completing the repair service, recharge the cycle with the specified amount of liquid refrigerant.

3

2 PART NAMES AND FUNCTIONS

● Indoor (Main) Unit

Filter

Remove dust and pollutants from return air

Horizontal Air Outlet

Sets airflow horizontal automatically during cooling or dehumidifying.

Grille

Auto Air Swing Vane Disperses airflow up and down and adjusts the angle of airflow direction.

		Air Intake	from room.
		Returns air
● Remote controller	[PAR-20MAA]
	● Once the controls are set, the same operation mode can
	be repeated by simply pressing the ON/OFF button.

● Operation buttons
TEMP. ADJUSTMENT button	TIME SETTING button				AIR SPEED button
This sets the room temperature. The	This sets the current time, start time				This sets the ventilation fan speed.
temperature setting can be performed	and stop time.
in 1: units
Setting range
Cooler 19: to 30:					ON/OFF button
Heater 17: to 28:
					This switches between the operation
					and stop modes each time it is pressed.
					The lamp on this button lights during
TIMER button		CENTRALLY CONTROLLED		1Hr.	operation.
This switches between continuous			ON OFF	˚C
		CHECK	CLOCK	FILTER
operation and the timer operation.		˚C		CHECK MODE	AIR DIRECTION button
	DEFROST			TEST RUN
				NOT AVAILABLE FUNCTION
	STAND BY		ERROR CODE
		TEMP.		ON/OFF	This adjusts the vertical angle of the
					ventilation.
				FILTER
OPERATION SWITCH button				CHECK TEST
Press this button to switch the cooler,	PAR-20MAA	TIMER SET			FILTER button
electronic dry (dehumidify), automatic
and heater modes.					This resets the filter service indication
					display
LOUVER button				CHECK-TEST RUN button
This switch the horizontal fan motion				Only press this button to perform an
ON and OFF.				inspection check or test operation.
				Do not use it for normal operation.
(Not available for this model.)

4

● Display

CENTRALLY CONTROLLED display

This indicates when the unit is controlled by optional features such as central control type remote controller.

CLOCK display

The current time , start time and stop time can be displayed in ten second intervals by pressing the time switch button. The start time or stop time is always displayed during the timer operation.

In this display example on the bottom left, a condition where all display lamps light is shown for explanation purposes although this differs from actual operation.

TIMER display

This indicates when the continuous operation and time operation modes are set.

It also display the time for the timer operation at the same time as when it is set.

OPERATION MODE display

This indicates the operation mode.

STANDBY display

The [STANDBY] symbol is only displayed from the time the heating operation starts unit the heated air begins to blow.

DEFROST display

This indicates when the defrost operation is performed.

AIR DIRECTION display

This displays the air direction.

	CENTRALLY CONTROLLED		1Hr.
		ON OFF		˚C
	CHECK	CLOCK
				FILTER
	˚C			CHECK MODE
STAND BY		ERROR CODE		TEST RUN
			NOT AVAILABLE	FUNCTION
DEFROST
	TEMP.			ON/OFF

FILTER

CHECK TEST

PAR-20MAA

TIMER SET

AIR SPEED display

The selected fan speed is displayed.

ROOM TEMPERATURE display

The temperature of the suction air is displayed during operation. The display range is 8°C to 39°C. The display flashes 8°C when the actual temperature is less than 8°C and flashes 39°C when the actual temperature is greater than 39°C.

Operation lamp

This lamp lights during operation, goes off when the unit stops and flashes when a malfunction occurs.

CHECK MODE

display

TEST RUN

This display lights in the check mode or when a test operation is performed.

CHECK display
		SET TEMPERATURE display		POWER display
This indicates when a malfunction
has occurred in the unit which should		This displays the selected setting		This lamp lights when electricity is
be checked.
		temperature.		supplied to the unit.

Caution

FILTER display

This lamp lights when the filter need to be cleaned.

●Only the Power display lights when the unit is stopped and power supplied to the unit.

●When the central control remote control unit, which is sold separately, is used the ON-OFF button, operation switch button and TEMP. adjustment button do not operate.

●“NOT AVAILABLE” is displayed when the Air speed button are pressed.This indicates that this room unit is not equipped with the fan direction adjustment function and the louver function.

●When power is turned ON for the first time, it is normal that “H0” is displayed on the room temperature indication (For max. 2minutes). Please wait until this “H0” indication disappear then start the operation.

5

3 SPECIFICATION

3-1. Specification

Item

		Power			[,V,Hz
Cooling capacity					kW
Heating capacity					kW
characteristic		Input		Cooling	kW
				Heating
					kW
Electric		Current		Cooling	A
				Heating	A
		Exterior			—
(munsell symbol)
				Height	mm
Dimensions				Width	mm
				Depth	mm
Heat exchanger					—
		Fan No			—
F		Air flow W3			k/min
a
		External
n					Pa
		static pressure
		Fan motor			kW
		output
		Insulator			—
		Air filter			—
				sideGas	[mm(in.)
	Pipe
dimensions			Liquidside		[mm(in.)
Cond. drain pipe size					[mm
Noise level W3					dB
Product weight					kg

PLFY-P80VAM-A.UK	PLFY-P100VAM-A.UK		PLFY-P125VAM-A.UK
	Single phase , 220-230-240V , 50Hz
9.0			14.0
	11.2
10.0	12.5		16.0
0.18	0.30		0.34
0.18	0.30		0.34
0.86	1.43		1.64
0.86	1.43		1.64

Unit : Galvanized sheets with gray heat insulation Grille : ABS resin				Munsell<0.70Y 8.59/0.97>
258<30>		298<30>
	840<950>
	840<950>
		Cross fin
		Turbo fan 1
22-20-18-16				30-28-25-22
		28-26-23-20
	0
0.070
		0.120
		Polyethylene sheet
		PP honey comb fabric
15.88(5/8")
		19.05(3/4")
9.52(3/8")		9.52(3/8")
	O.D.32 (PVC pipe VP-25 connectable)
37-35-32-30				43-41-38-35
		41-39-36-33
24<5>		30<5>		30<5>

Note 1.	Rating conditions(JIS B 8616)
	Cooling :	Indoor :	D.B. 27°C	W.B. 19.0°C
		outdoor :	D.B. 35°C
	Heating :	Indoor :	D.B. 20°C
		outdoor :	D.B. 7°C	W.B. 6°C
Note 2.	The number indicated in < > is just for the grille.
W 3.	Air flow and the noise level are indicated as High-Middium 1-Middium 2-Low.

6

3-2. Electrical parts specifications

	Model	Symbol	PLFY-P80VAM-A.UK	PLFY-P100VAM-A.UK	PLFY-P125VAM-A.UK
	Parts name
	Room temperature	TH21	Resistance 0:/15k", 10:/9.6k", 20:/6.3k", 25:/5.2k", 30:/4.3k", 40:/3.0k"
	thermistor
	Liquid pipe thermistor	TH22	Resistance 0:/15k", 10:/9.6k", 20:/6.3k", 25:/5.2k", 30:/4.3k", 40:/3.0k"
	Gas pipe thermistor	TH23	Resistance 0:/15k", 10:/9.6k", 20:/6.3k", 25:/5.2k", 30:/4.3k", 40:/3.0k"
	Fuse	FUSE		250V 6.3A
	(Indoor controller board)
			6-pole OUTPUT 70W	6-pole OUTPUT 120W
	Fan motor	MF	D17B6P70MS	D176P120MS
	(with inner-thermostat)			OFF 130: i 5:
			Inner-thermostat
				ON 90: i 20:
	Fan motor capacitor	C	3.5+ 440V	7.0+ 440V
	Vane motor	MV		MSBPC20M04
				DC12V 300"/phase
	Drain-up mechanism	DP		PLD-12230ME-1
				INPUT 12/10.8W 24R/Hr
	Drain sensor	DS	Thermistor resistance 0:/6k", 10:/3.9k", 20:/2.6k", 25:/2.2k", 30:/1.8k", 40:/1.3k"
	Linear expansion valve	LEV	DC12V Stepping motor drive port dimension 5.2" (0~2000pulse)
				EDM-804ME
	Electric heater	H2		240V 21.8W
	(Condensation proof)
	Power supply terminal	TB2		(L, N, ;) 330V 30A
	block
	Transmission terminal	TB5		(M1, M2, S) 250V 20A
	block
	MA remote controller	TB15		(1, 2) 250V 10A
	terminal block

4 4-WAY AIR FLOW SYSTEM

4-1. Placement of the air outlets

•For this grille, the blowout direction comes in 11 patterns.

Also, by setting the dip switches (SWA and SWB) on the indoor board to the appropriate settings, you can adjust the air flow and speed. Select the settings from Table according to the location in which you want to install the unit.

1) Decide on the pattern of the airflow direction.

<Table 1>	4-direction	3-direction
directionBlowout pattern	Pattern 1 Factory setting	Pattern 4 One air outlet
		fully closed

2-direction

Note1.

For 3 and 2-directional,

Pattern 6

Two air outlet

please use the air outlet

fully closed

shutter plate (option).

7

2) According to the number of air outlets and height of the ceiling to install the unit, be sure to set the up switches (SWA, SWB) on the indoor board to the appropriate setting.

• Correspondence of ceiling heights to numbers of air outlets.

-P80VAM-A.UK
SWA	1	2	3
	Standard	High ceiling 1 High ceiling 2
direction	2.7m	3.0m	3.5m
direction	3.0m	3.3m	3.5m
direction	3.3m	3.5m	—

-P100 / P125VAM-A.UK
SWA	1	2	3
	Standard	High ceiling 1 High ceiling 2
direction	3.2m	3.6m	4.2m
direction	3.6m	4.0m	4.2m
direction	4.0m	4.2m	—

4-2. Fresh air intake (Installation of site)

•At the time of installation, use the duct holes (cutout) located at the positions shown in following diagram, as and when required.

Note :

Be sure to add135mm to the dimensions in the diagram that are marked with a “w” if installing a multi function casement (Option)

Fresh air intake hole

Fresh air intake hole diagram

3 - {2.8 Burring hole

w158

120_

_ 120

{125

Burring hole pitch

{100

(Cut out hole)

Refrigerant pipe

Drain pipe

Ceiling surface

4-3. Interlocking operation method with duct fan (Booster fan)

● Whenever the indoor unit is operating, the duct fun also operates.

(1)Connect the optional multiple remote controller adapter(PAC-SA88HA-E)to the connector CN51 on the indoor controller board.

(2)Drive the relay after connecting the 12V DC relay between the Yellow and Orange connector lines.

(w)Use a relay under 1W.

MB: Electromagnetic switch power relay for duct fan. X: Auxiliary relay (12V DC LY-1F)

			Be sure to secure insulation		~
			material by tape and such
CN51	5	Green
on			Yellow
indoor unit
	1		Orange		MB
board
	Connector (5P)		Red
	Package side		Brown
			Multiple remote	Installation at site
			controller adapter	Be sure to secure insulation
Indoor controller board			PAC-SA88HA-E	material by tape and such
				Distance between indoor
			CN51	controller board and relay
				must be within 10m.

Multiple remote controller adapter PAC-SA88HA-E

CN51

8