Mitsubishi Electric City Multi Series PCFY-P15NKMU-E Operating manual

TECHNICAL & SERVICE MANUAL
CONTENTS
1. TECHNICAL CHANGES.........................2
2. PART NAMES AND FUNCTIONS..........2
3. SPECIFICATION.....................................4
4. OUTLINES AND DIMENSIONS..............8
5. WIRING DIAGRAM...............................11
6. REFRIGERANT SYSTEM DIAGRAM........13
7. MICROPROCESSOR CONTROL...............14
8. TROUBLESHOOTING..........................21
9. DISASSEMBLY PROCEDURE.............30
Indoor unit
[Model names] [Service Ref.]
No. OCH500
REVISED EDITION-A
INDOOR UNIT
R22R410A
Note:
•This manual describes only
service data of the indoor
units.
•RoHS compliant products
have <G> mark on the spec
name plate.
April 2012
PARTS CATALOG (OCB500)
Model name
indication
SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS
PCFY-P15NKMU-E
PCFY-P24NKMU-E
PCFY-P30NKMU-E
PCFY-P36NKMU-E
PCFY-P15NKMU-E.TH
PCFY-P15NKMU-ER1.TH
PCFY-P24NKMU-E.TH
PCFY-P24NKMU-ER1.TH
PCFY-P30NKMU-E.TH
PCFY-P30NKMU-ER1.TH
PCFY-P36NKMU-E.TH
PCFY-P36NKMU-ER1.TH
Revision:
•
PCFY-P15/24/30/36NKMU-
ER1 have been added in
REVISED EDITION-A.
• Some descriptions have
been modified.
• Please void OCH500.

Indoor unit
2PART NAMES AND FUNCTIONS
Air outlet
Louver
Vane
Air intake Filter
(Inside of Air intake)
2
1TECHNICAL CHANGES
PCFY-P15NKMU-E PCFY-P15NKMU-ER1
PCFY-P24NKMU-E PCFY-P24NKMU-ER1
PCFY-P30NKMU-E PCFY-P30NKMU-ER1
PCFY-P36NKMU-E PCFY-P36NKMU-ER1
INDOOR CONTROLLER BOARD (I.B.) has been changed (S/W version up).
Use the specified refrigerant only
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.
OCH500A

3
°F°C
°F°C
ERROR CODE
AFTER
TIMER
TIME SUN MON TUE WED THU FRI SAT
ON
OFF
Hr
AFTER
FILTER
FUNCTION
ONLY1Hr.
WEEKLY
SIMPLE
AUTO OFF
PAR-21MAA
ON/OFF
FILTER
CHECK
OPERATION
CLEAR
TEST
TEMP.
MENU
BACK DAY
MONITOR/SET
CLOCK
ON/OFF
Display Section
For purposes of this explanation,
all parts of the display are shown.
During actual operation, only
the relevant items will be lit.
Identifies the current operation
Shows the operating mode, etc.
*Multilanguage display is available.
“Centrally Controlled” indicator
Indicates that operation from the
remote controller has been prohib-
ited by a master controller.
“Timer is Off” indicator
Indicates that the timer is off.
Temperature Setting
Shows the target temperature.
Day-of-Week
Shows the current day of the week.
Time/Timer Display
Shows the current time, unless the simple or Auto Off
timer is set.
If the simple or Auto Off timer is set, the time to be
switched off is shown.
“Sensor” indication
Displays when the remote controller
sensor is used.
“Locked” indicator
Indicates that remote controller but-
tons have been locked.
“Clean The Filter” indicator
To be displayed on when it is time to
clean the filter.
Timer indicators
The indicator comes on if the corre-
sponding timer is set.
Up/Down Air Direction indica-
tor
The indicator shows the direc-
tion of the outcoming airflow.
“One Hour Only” indicator
Room Temperature display
Shows the room temperature. The room
temperature display range is 46–102°F.
The display blinks if the temperature
is less than 46°F or 102°F or more.
Louver display
Indicates the action of the swing louver.
Does not appear if the louver is not
running.
(Power On indicator)
Indicates that the power is on.
Fan Speed indicator
Shows the selected fan speed.
Ventilation indicator
Appears when the unit is running in
Ventilation mode.
Operation Section
Temperature setting buttons
Down
Up
Timer Menu button
(Monitor/Set button)
Mode button (Return button)
Set Time buttons
Back
Ahead
Timer On/Off button
(Set Day button)
Opening the
cover
ON/OFF button
Fan Speed button
Filter button
(<Enter> button)
Test Run button
Check button (Clear button)
Airflow Up/Down button
Louver button
( Operation button)
To return operation
number
Ventilation button
( Operation button)
To go to next operation
number
Built-in temperature sensor
Displays if the airflow is set to
Low or downward during COOL
or DRY mode. (Operation varies
according to model.)
The indicator goes off in one hour,
at which time the airflow direction
also changes.
Wired remote controller
Note:
The phrase "Wired remote controller" in this manual refers only to the PAR-21MAA.
If you need any information for the other remote controller, please refer to either the installation manual or initial setting manual which are included in
remote controller's box.
OCH500A

4
3SPECIFICATION
3-1. SPECIFICATIONS
*1 Nominal cooling conditions
Note : Indoor :
Outdoor :
Pipe length :
Level difference :
80°FDB/67°FWB (26.7°CDB/19.4°CWB)
95°FDB (35°CDB)
25 ft. (7.6 m)
0 ft (0 m)
*2 Nominal heating conditions
70°FDB(21°CDB)
47°FDB/43°FWB (8.3°CDB/6.1°CWB)
25 ft. (7.6 m)
0 ft (0 m)
*3 Connect the joint
(purchased locally) for R22 Unit converter
* Due to continuing improvement, above specification may be subject to change without notice.
kcal/h = kW
×860
Btu/h = kW × 3,412
cfm = m3/min × 35.31
lb = kg/0.4536
*Above specification data is
subject to rounding variation.
Details on foundation work, insulation work, electrical wiring, power source switch, and other items shall be referred to the
Installation Manual.
Service ref. PCFY-P15NKMU-E.TH
PCFY-P15NKMU-ER1.TH PCFY-P24NKMU-E.TH PCFY-P24NKMU-ER1.TH PCFY-P30NKMU-E.TH PCFY-P30NKMU-ER1.TH PCFY-P36NKMU-E.TH PCFY-P36NKMU-ER1.TH
Power source 1-phase 208/230V 60Hz
Cooling capacity *1 kW 4.4 7.0 8.8 10.6
(Nominal)*1 Btu/h 15,000 24,000 30,000 36,000
Power input kW 0.03 0.04 0.09 0.11
Current input A 0.35 0.41 0.83 0.97
Heating capacity *2 kW 5.0 7.9 10.0 11.7
(Nominal ) *2 Btu/h 17,000 27,000 34,000 40,000
Power input kW 0.03 0.04 0.09 0.11
Current input A 0.35 0.41 0.83 0.97
External finish MUNSELL (6.4Y 8.9/0.4)
External dimensions H x W x D mm 230×960×680 230×1280×680 230×1600×680
in. 9-1/16×37-13/16×26-3/4 9-1/16×50-3/8×26-3/4 9-1/16×63×26-3/4
Net weight kg (lb) 24 (53)32 (71)36 (79)38 (84)
Heat exchanger Cross fin (Aluminum fin and copper tube)
FAN Type x quantity Sirocco fan × 2 Sirocco fan × 3 Sirocco fan × 4
External Pa 0
static press. mmH2O0
Motor type DC motor
Motor output kW 0.090 0.095 0.160
Driving mechanism Direct-driven by motor
Airflow rate m3/min 10-11-12-13 14-15-16-18 20-22-25-28 21-24-27-31
(Low-Mid2-Mid1-High)L/s 167-183-200-217 233-250-267-300 333-367-417-467 350-400-450-517
cfm 353-388-424-459 494-530-565-636 703-777-883-989 742-847-953-1095
Noise level (Low-Mid2-Mid1-High)
dB <A> 29-32-34-36 31-33-35-37 34-37-40-43 36-39-42-44
(measured in anechoic room)
Insulation material Polyethylene sheet
Air filter PP honeycomb
Protection device Fuse
Refrigerant control device LEV
Connectable outdoor unit R410A,R22 CITY MULTI
Diameter of Liquid (R410A)mm(in.)ø6.35 (ø1/4)Flare ø9.52 (ø3/8)Flare ø9.52 (ø3/8)Flare ø9.52 (ø3/8)Flare
refrigerant pipe (R22)ø6.35 (ø1/4)Flare ø9.52 (ø3/8)Flare ø9.52 (ø3/8)Flare ø9.52 (ø3/8)Flare
Gas (R410A)mm(in.)ø12.7 (ø1/2)Flare ø15.88 (ø5/8)Flare ø15.88 (ø5/8)Flare ø15.88 (ø5/8)Flare
(R22)ø12.7 (ø1/2)Flare ø15.88 (ø5/8)Flare ø15.88 (ø5/8)Flare ø19.05(ø3/4)Flare*3
Field drain pipe size mm(in.)O.D. 26mm (1)
Standard
attachment Document
Accessory
Installation Manual,Instruction Book
Drain joint socket
Optional parts
Remarks
Drain pump kit PAC-SH83DM-E PAC-SH84DM-E
High efficiency filter
External heater adapter
i-see Sensor
Wireless remote controller with i-see Sensor
PAC-SH88KF-E PAC-SH89KF-E PAC-SH90KF-E
Wireless remote controller kit
Installation PAR-SL93B-E
PAR-SA92MW-E
PAC-SH91MK-E
PAC-YU25HT
OCH500A

5
Parts name
Symbol
TH21
TH22
TH23
FUSE
MF
MV
DP
FS
LEV
TB2
TB5
TB15
Resistance 30°F/15.8k, 50°F/9.6k, 70°F/6.0k, 80°F/4.8k, 90°F/3.9k, 100°F/3.2k
Resistance 30°F/15.8k, 50°F/9.6k, 70°F/6.0k, 80°F/4.8k, 90°F/3.9k, 100°F/3.2k
Resistance 30°F/15.8k, 50°F/9.6k, 70°F/6.0k, 80°F/4.8k, 90°F/3.9k, 100°F/3.2k
250V 6.3A
(L1, L2, GR) Rated to 330V 30A
(M1, M2, S) Rated to 250V 20A
(1, 2) Rated to 250V 10A
Liquid pipe thermistor
Gas pipe thermistor
Vane motor
Drain float switch
Linear expansion valve
PCFY-P24NKMU-E.TH
PCFY-P24NKMU-ER1.TH
PCFY-P15NKMU-E.TH
PCFY-P15NKMU-ER1.TH
PCFY-P30NKMU-E.TH
PCFY-P30NKMU-ER1.TH
PCFY-P36NKMU-E.TH
PCFY-P36NKMU-ER1.TH
Room temperature
thermistor
Fuse
(Indoor controller board)
Drain-pump
(Option)
Fan motor
Power supply terminal
block
Transmission terminal
block
MA remote controller
terminal block
8-pole OUTPUT 90W 8-pole OUTPUT 95W 8-pole OUTPUT 160W
MSBPC20
DC12V 300/phase
INPUT 10.8W 24 /Hr
Open / Short detection DC 5V
DC12V Stepping motor drive
Port dimension ø5.2 (0~2000pulse)
EFM-80YGME
DC12V Stepping motor drive
Port dimension ø3.2 (0~2000pulse)
EFM-40YGME
Note : Refer to WIRING DIAGRAM for the supplied voltage.
Service Ref.
3-3. SOUND LEVEL
* Measured in anechoic room.
PCFY-P•NKMU-E.TH
PCFY-P15NKMU-E.TH
PCFY-P15NKMU-ER1.TH
Service Ref.
29-32-34-36
PCFY-P24NKMU-E.TH
PCFY-P24NKMU-ER1.TH 31-33-35-37
PCFY-P30NKMU-E.TH
PCFY-P30NKMU-ER1.TH 34-37-40-43
PCFY-P36NKMU-E.TH
PCFY-P36NKMU-ER1.TH 36-39-42-44
Sound level dB (A)
Sound level at anechoic room : Low-Mid2-Mid1-High
Measurement
3.3ft
(1m)
3.3ft
(1m)
location
3-2. ELECTRICAL PARTS SPECIFICATIONS
OCH500A