Mitsubishi Electric City Multi PCFY-P40VKM-E Operating manual

TECHNICAL & SERVICE MANUAL
CONTENTS
1. TECHNICAL CHANGES ......................... 2
2. SAFETY PRECAUTION .......................... 2
3. PART NAMES AND FUNCTIONS .......... 4
4. SPECIFICATION ................................... 11
5. OUTLINES AND DIMENSIONS ............ 15
6. WIRING DIAGRAM ............................... 18
7. REFRIGERANT SYSTEM DIAGRAM ........ 20
8. TROUBLESHOOTING .......................... 21
9. DISASSEMBLY PROCEDURE ............. 30
Indoor unit
[Model names] [Service Ref.]
No. OCH449
REVISED EDITION-A
INDOOR UNIT
SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS
R410A
Note:
•
This manual describes only
service data of the indoor units.
• RoHS compliant products have
<G> mark on the spec name
plate.
December 2012
PARTS CATALOG (OCB449)
Model name
indication
PCFY-P40VKM-E
PCFY-P63VKM-E
PCFY-P100VKM-E
PCFY-P125VKM-E
PCFY-P40VKM-E
PCFY-P40VKM-ER1
PCFY-P63VKM-E
PCFY-P63VKM-ER1
PCFY-P100VKM-E
PCFY-P100VKM-ER1
PCFY-P125VKM-E
PCFY-P125VKM-ER1
Revision:
• PCFY-P40/63/100/125VKM-ER1
have been added in REVISED
EDITION-A.
• Some descriptions have been
modified.
• Please void OCH449.

2
2SAFETY PRECAUTION
1TECHNICAL CHANGES
PCFY-P40VKM-E PCFY-P40VKM-ER1
PCFY-P63VKM-E PCFY-P63VKM-ER1
PCFY-P100VKM-E PCFY-P100VKM-ER1
PCFY-P125VKM-E PCFY-P125VKM-ER1
• INDOOR CONTROLLER BOARD (I.B.) has been changed. (S/W version up)
Cautions for units utilizing refrigerant R410A
Charge refrigerant from liquid phase of gas
cylinder.
If the refrigerant is charged from gas phase, composition
change may occur in refrigerant and the efficiency will be
lowered.
Do not use refrigerant other than R410A.
If other refrigerant (R22 etc.) is used, chlorine in refrige-
rant can cause deterioration of refrigerant oil etc.
Use a vacuum pump with a reverse flow check
valve.
Vacuum pump oil may flow back into refrigerant cycle and
that can cause deterioration of refrigerant oil etc.
Use the following tools specifically designed for
use with R410A refrigerant.
The following tools are necessary to use R410A refrigerant.
Handle tools with care.
If dirt, dust or moisture enters into refrigerant cycle, that can
cause deterioration of refrigerant oil or malfunction of com-
pressor.
Do not use a charging cylinder.
If a charging cylinder is used, the composition of refrigera-
nt will change and the efficiency will be lowered.
Flare tool
Electronic refrigerant
charging scale
Vacuum pump adaptor
Size adjustment gauge
Gauge manifold
Torque wrench
Gas leak detector
Charge hose
Tools for R410A
If dirt, dust or moisture enters into refrigerant cycle, that can
cause deterioration of refrigerant oil or malfunction of com-
pressor.
If large amount of mineral oil enters, that can cause deterio-
ration of refrigerant oil etc.
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 deterioration of the new unit.
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.
Never use any refrigerant other than that specified.
Doing so may cause a burst, an explosion, or fire when the
unit is being used, serviced, or disposed of.
Correct refrigerant is specified in the manuals and on the
spec labels provided with our products.
We will not be held responsible for mechanical failure,
system malfunction, unit breakdown or accidents caused
by failure to follow the instructions.
Use the specified refrigerant only.
Store the piping indoors, and both ends of the
piping sealed until just before brazing.
(Leave elbow joints, etc. in their packaging.)
The refrigerant oil applied to flare and flange
connections must be ester oil, ether oil or
alkylbenzene oil in a small amount.
Ventilate the room if refrigerant leaks during
operation. If refrigerant comes into contact with
a flame, poisonous gases will be released.
OCH449A

33
Gravimeter
Unit
[3] Service tools
Use the below service tools as exclusive tools for R410A refrigerant.
[1] Cautions for service
(1) Perform service after recovering the refrigerant left in unit completely.
(2) Do not release refrigerant in the air.
(3) After completing service, charge the cycle with specified amount of refrigerant.
(4) When performing service, install a filter drier simultaneously.
Be sure to use a filter drier for new refrigerant.
[2] Additional refrigerant charge
When charging directly from cylinder
· Check that cylinder for R410A on the market is syphon type.
· Charging should be performed with the cylinder of syphon standing vertically. (Refrigerant is charged from liquid phase.)
No. Tool name Specifications
1Gauge manifold
· Only for R410A
· Use the existing fitting specifications. (UNF1/2)
· Use high-tension side pressure of 5.3MPa·G or over.
2Charge hose · Only for R410A
· Use pressure performance of 5.09MPa·G or over.
3Electronic scale
4Gas leak detector · Use the detector for R134a, R407C or R410A.
5Adaptor for reverse flow check · Attach on vacuum pump.
6Refrigerant charge base
7Refrigerant cylinder · Only for R410A · Top of cylinder (Pink)
· Cylinder with syphon
8Refrigerant recovery equipment
OCH449A

4
3-1. INDOOR UNIT
3PART NAMES AND FUNCTIONS
Air outlet
Louver
Vane
Air intake Filter
(Inside of Air intake)
OCH449A

55
Function buttons
F1 F2 F3 F4
Press to turn ON/OFF the indoor unit.
ON / OFF button
When the backlight is off, pressing any button turns
the backlight on and does not perform its function.
(except for the (ON / OFF) button)
The functions of the function buttons change depending on
the screen. Refer to the button function guide that appears
at the bottom of the LCD for the functions they serve on a
given screen.
When the system is centrally controlled, the button function
guide that corresponds to the locked button will not appear.
Press to save the setting.
SELECT button
Press to return to the previous screen.
RETURN button
Press to bring up the Main menu.
MENU button
Operation settings will appear.
When the backlight is off, pressing any button turns the
backlight on and it will stay lit for a certain period of time
depending on the screen.
Backlit LCD
This lamp lights up in green while the unit is in operation.
It blinks while the remote controller is starting up or when
there is an error.
ON / OFF lamp
Main display : Press to change the operation mode.
Main menu : Press to move the cursor down.
Function button F1
Main display : Press to decrease temperature.
Main menu : Press to move the cursor up.
Function button F2
Main display : Press to increase temperature.
Main menu : Press to go to the previous page.
Function button F3
Main display : Press to change the fan speed.
Main menu : Press to go to the next page.
Function button F4
Fri
Room
Set temp.
Mode Temp. Fan
Cool Auto
Main
Main display:
Cursor Page
Main menu
Vane·Louver·Vent. (Lossnay)
High power
Timer
Weekly timer
OU silent mode
<Main display> <Main menu>
Function guide
3-2. WIRED REMOTE CONTROLLER <PAR-30MAA/PAR-31MAA>
* The functions which can be used are restricted according to the model.
: Supported : Unsupported
Function PAR-30MAA/PAR-31MAA PAR-21MAA
Slim City multi
Body Product size H × W × D (mm) 120 × 120 × 19 120 × 130 × 19
LCD Full Dot LCD Partial Dot LCD
Backlight
Energy-saving Energy-saving operation schedule
Automatic return to the preset temperature
Restriction Setting the temperature range restriction
Function Operation lock function
Weekly timer
On / Off timer
High Power
Manual vane angle
Wired remote controller function
OCH449A