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

SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS

No. OC213

TECHNICAL & SERVICE MANUAL

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

PLFY-P80VAM

PLFY-P100VAM

PLFY-P125VAM

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

CONTENTS

1. SAFETY PRECAUTION ························3

2. PART NAMES AND FUNCTIONS·········5

3. SPECIFICATION ···································7

4. 4-WAY AIR FLOW SYSTEM ·················8

5. OUTLINES AND DIMENSIONS ··········12

6. WIRING DIAGRAM ·····························13

7. REFRIGERANT SYSTEM DIAGRAM····14

8. TROUBLE SHOOTING ·······················15

9. DISASSEMBLY PROCEDURE ···········20

INDOOR UNIT 10. PARTS LIST ········································23

11. OPTIONAL PARTS ·····························26

1 SAFETY PRECAUTION

Cautions for devices that use R407C refrigerant.

·Do not use the existing refrigerant piping.

-The old refrigerant and lubricating oil in the existing piping contains a large amount of chlorine which may cause the lubricating oil 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 lubricating oil 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 Suniso 4GS or 3GS (small amount) as the lubricating oil to coat flares and flange connection parts.

-The lubricating oil used with the air conditioner is highly hygroscopic. If it is used, water may be mixed in and deterioration of the lubricating oil may result.

·Use liquid refrigerant to charge the system.

-If gas refrigerant is used to charge 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 lubricating oil 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 lubricating oil to deteriorate.

3

[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 35kgf/cm or over.
		2
2	Charge hose	·Only for R407C.
		·Use pressure performance of 52kgf/cm or over.
3	Electronic scale
4	Gas leak detector	·Use the detector for R134a or R407C.
5	Adapter for reverse flow check.	·Attach on vacuum pump.
6	Refrigerant charge base.
7	Refrigerant cylinder.	·For R407C ·Top of cylinder (Brown)
		·Cylinder with syphon
8	Refrigerant recovery equipment.

[2] Notice on repair service

·After recovering all the refrigerant in the unit, work may be started. ·Do not release the refrigerant in the air.

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

[3]Refrigerant recharging

(1)Refrigerant recharging process

Direct charging from the cylinder.

·Confirm that the cylinder is suitable for syphoning.

·Raise the cylinder and recharge the unit by syphoning liquid refrigerant.

Unit

Gravimeter

(2) Recharge when refrigerant leakage has occurred.

·After recovering all the refrigerant in the unit, work may be started. ·Do not release the refrigerant in the air.

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

4

2 PART NAMES AND FUNCTIONS

● Indoor (Main) Unit

Filter

Removes dust and pollutants from intake air

Horizontal Air Outlet

Sets airflow to 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

Intakes air from room.

● Remote controller	[PAR-F25MA]
	● Once the controls are set, the same operation mode can
	be repeated by simply pressing the ON/OFF button.

● Operation buttons
	TIMER button		TIME SETTING button		AIR SPEED button
	This switches between continuous		This sets the current time, start time		This sets the ventilation fan speed.
	operation and the timer operation.		and stop time.

		ON/OFF button
	OPERATION SWITCH button	This switches between the operation
		and stop modes each time it is pressed.
	Press this button to switch the cooling,	The lamp on this button lights during
		operation.
	electronic dry (dehumidify), automatic
	and heating modes.

		AIR DIRECTION button
		This adjusts the vertical angle of the
	TEMPERATURE ADJUSTMENT button	ventilation.
	This sets the room temperature. The
	temperature setting can be performed	FILTER button
	in 1: units
	Setting range	This resets the filter service indication
	Cooling 19: to 30:
		display
	Heating 17: to 28:
	LOUVER button	CHECK-TEST RUN button
	This switches 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.

(This button does not operate on this model)

5

● Display

CENTRALLY CONTROLLED display

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

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 dis played from the time the heating operation starts until the heated air begins to blow.

DEFROST display

This indicates when the defrost operation is performed.

CLOCK display

The current time , start time and stop time can be displayed in ten second intervals by pressing the time setting 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.

AIR DIRECTION display

This displays the air direction.

FAN SPEED display

The selected fan speed is displayed.

Operation lamp

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

ROOM TEMPERATURE display

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

CHECK MODE

display

TEST RUN

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

CHECK display
This indicates when a malfunction		SET TEMPERATURE display		POWER display
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 needs 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 TEMPERATURE 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.

6

3 SPECIFICATION

3-1. Specification

Item

Power

Cooling capacity

Heating capacity

	characteristic	Power	Cooling
		supply	Heating
		input
		Rated Cooling
		current	Heating
	Electric
		factor	Heating
		Power	Cooling

Exterior (munsell symbol)

Height

Dimensions

<Grille> Width

Depth

Heat exchanger

		Fan No
	F	Air flow #3
	a
		External
	n
		static pressure
		Fan motor
		output
		Insulator

Air filter

Gas Pipe side

dimensions Liquid side

Drain pipe size

Noise level

Product weight <Grille>

	PLFY-P80VAM.UK	PLFY-P100VAM.UK	PLFY-P125VAM.UK
V·Hz		Single phase 220V-240V 50 Hz
kcal/h	8,000	10,000	12,500
BTU/h	31,800	39,600	49.700
kW	9.3	11.6	14.5
kcal/h	9,000	11,200	14,000
BTU/h	35,800	44,500	55,600
kW	10.5	13.0	16.3
kW	0.18	0.30	0.34
kW	0.18	0.30	0.34
A	0.86	1.43	1.64
A	0.86	1.43	1.64
%	95 - 87	95 - 87	94 - 86
%	95 - 87	95 - 87	94 - 86
	-Unit : Galvanized sheets with gray heat insulation · Grille : ABS resin		Munsell<0.70Y 8.59/0.97>
mm	258<30>	298<30>
mm		840<950>
mm		840<950>
		Cross fin
		Turbo fan 1
k/min	22-20-18-16	28-26-23-20	30-28-25-22
Pa		0
kW	0.070	0.120
		Polyethylene sheet
		PP honey comb fabric (long life)
[mm	15.88(5/8")	19.05(3/4")
[mm	9.52(3/8")	9.52(3/8")
[mm		O.D.32 (PVC pipe O.D.32 connectable)
dB	37-35-32-30	41-39-36-33	43-41-38-35
kg	24<5>	30<5>	30<5>

Note 1. Rating conditions(JIS B 8615)

Cooling : Indoor : D.B. 27°C W.B. 19.5°C outdoor : D.B. 35°C

Heating : Indoor : D.B. 21°C

outdoor : D.B. 7°C W.B. 6°C Note 2. The number indicated in < > is just for the grille.

Note 3. Air flow and the noise level are indicated as High-Middium 1-Middium 2-Low.

7

3-2. Electrical parts specifications

	Model	Symbol	PLFY-P80VAM.UK	PLFY-P100VAM.UK	PLFY-P125VAM.UK
	Parts name
	Room temperature	TH21	Resistance 0:/15k", 10:/9.6k", 20:/6.3k", 25:/5.4k", 30:/4.3k", 40:/3.0k"
	thermistor
	Liquid pipe thermistor	TH22	Resistance 0:/15k", 10:/9.6k", 20:/6.3k", 25:/5.4k", 30:/4.3k", 40:/3.0k"
	Gas pipe thermistor	TH23	Resistance 0:/15k", 10:/9.6k", 20:/6.3k", 25:/5.4k", 30:/4.3k", 40:/3.0k"
	Fuse	FUSE		250V 6.3A
	(Indoor controller board)
	Fan motor	MF	6-pole OUTPUT 70W	6-pole OUTPUT 120W
	(with inner-thermostat)		D17B6P70MS	D176P120MS
	Inner-thermostat			OFF 130: i 5:
	(Fan motor)			ON 90: i 20:
	Fan motor capacitor	C1	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 30A
	block

4 4-WAY AIR FLOW SYSTEM

4-1. Placement of the air outlets

For this grille, the discharge 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 the Table below according to the location in which you want to install the unit.

1) Decide on the pattern of the airflow direction.

<Table 1>

Discharge direction pattern

4-direction	3-direction
Pattern 1 Factory setting	Pattern 4 One air outlet
	fully closed

2-direction

Note :

For 3 and 2-directional,

Pattern 6

Two air outlets

please use the air outlet

fully closed

shutter plate (option).

8

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

Correspondence of ceiling heights to numbers of air outlets.

-P80VAM.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	—

-P100VAM.UK
-P125VAM.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 (Location for installation)

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 add 135mm 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 etc.
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 etc.
				Distance between indoor
			CN51	controller board and relay
				must be within 10m.

Multiple remote controller adapter PAC-SA88HA-E

CN51

9