Mitsubishi city multi PKFY-08NAMU-A Operating manual

TECHNICAL & SERVICE MANUAL
No. OC291
SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS
Wall Mounted Type
CITY MULTI Series
[Models]PKFY-08NAMU-A
PKFY-12NGMU-A
PKFY-20NFMU-A
PKFY-32NFMU-A
CONTENTS
1. PKFY-•MU-A Type ····················OC292-1
2. PLFY-•NAMU-A Type ···············OC290-1
L
I
S
T
E
D
CUS
Ceiling Cassettes Type
CITY MULTI Series
[Models]PLFY-12NAMU-A
PLFY-20NAMU-A
PLFY-24NAMU-A
PLFY-32NAMU-A
PLFY-40NAMU-A
• Connected outdoor unit is
PURY-80TMU or PURY-100TMU.
CITY MULTI Indoor Unit
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OC292-1
CONTENTS
1. DIFFERENCES····························································································OC292- 3
2. FEATURES ··································································································OC292- 4
3. PART NAMES AND FUNCTIONS·······························································OC292- 7
4. SPECIFICATIONS ·······················································································OC292-10
5. OUTLINES AND DIMENSIONS···································································OC292-17
6. WIRING DIAGRAM······················································································OC292-21
7. REFRIGERANT SYSTEM DIAGRAM ····························································OC292-24
8. MICROPROCESSOR CONTROL ·······························································OC292-25
9. TROUBLESHOOTING·················································································OC292-33
10. DISASSEMBLY PROCEDURE ···································································OC292-42
11. PARTS LIST·································································································OC292-51
PKFY-08NAMU-A
PKFY-12NGMU-A
PKFY-20NFMU-A
PKFY-32NFMU-A
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OC292-3
DIFFERENCES1
Lineflow fan ✕2
13-3/8
9-1/4
5/8"
3/8"
O.D. 13/16"
Item Model
Fan
Fan speed
Air flow
Noise level
Out dimension
Controller board
Pipe dimension
—
—
CFM
CFM
CFM
CFM
dB
dB
dB
dB
in.
in.
in.
—
—
—
—
—
—
in.
in.
in.
1
2
3
4
5
6
High
Medium 1
Medium 2
Low
High
Medium 1
Medium 2
Low
Height
Width
Depth
SW2
Gas side
Liquid side
Drain(unit side)
08NAMU-A
Lineflow fan ✕1
4 speeds type
36
35
33
32
11-5/8
32-3/32
6-7/32
OFF
OFF
ON
OFF
—
—
1/2"
1/4"
O.D. 5/8"
12NGMU-A
Lineflow fan ✕1
4 speeds type
42
40
36
32
13-3/8
39
9-1/4
OFF
ON
ON
OFF
OFF
OFF
1/2"
1/4"
O.D. 13/16"
20NFMU-A
2 speeds type
45
—
—
39
55-1/8
OFF
ON
OFF
ON
OFF
OFF
32NFMU-A
2 speeds type
49
—
—
46
66-1/8
OFF
OFF
OFF
OFF
ON
OFF
PKFY-
210
200
180
170
190
180
170
160
D
R
Y
W
E
T
410
370
340
280
370
330
300
250
D
R
Y
W
E
T
640
—
—
490
570
—
—
440
D
R
Y
W
E
T
990
—
—
780
890
—
—
700
D
R
Y
W
E
T
Differences among the models of PKFY series.
PKFY-08NAMU-A
Indoor Unit PKFY-12NGMU-A
Indoor Unit
PKFY-20NFMU-A
Indoor Unit PKFY-32NFMU-A
Indoor Unit
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OC292-4
2FEATURES
2-1. New Compact Design
• Compact 11-5/8 inch (29.5cm) high body fits snugly in even limited spaces.
• Light weight 19lbs (8.5kg) unit easy to transport and install.
2-2. Auto-flap shutter Enhances good Looks
With a simple flick of the OFF switch the air outlet can be closed off with a shutter. The shutter also functions as a flap
during operation to adjust the air flow angle, with “Auto Angle” securing a comfortable air flow.
2-3. Front power supply box for easier wiring even after installation
The front power supply box allows electrical wiring work to be done after the indoor unit has been installed. For easier
installation, all the screws required for securing the indoor unit to the wall are accessible from the front of the unit.
2-4. 4-way piping provides more flexibility in selecting installation sites
All piping including drainage can be connected from the rear, right, base, and left of the unit, providing much greater
flexibility out piping and selecting installation site.
Model Cooling capacity / Heating capacity
PKFY-08NAMU-A 8,000/9,000 Btu/h
Indoor Unit Microprocessor
Remote controller
PKFY-08NAMU-A
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OC292-5
2-1. New Compact Design
Units have now been downsized to require minimal wall space.
A20% reduction in width 38-31/32 inch (990mm) compared to previous models means that installation is possible in very nar-
row spaces.
2-2. Auto-flap shutter Enhances Good Looks
With a simple flick of the OFF switch the air outlet can be closed off with a with a shutter. The shutter also functions as a flap
during operation to adjust the air flow angle, with “Auto Angle” securing a comfortable air flow.
2-3. The Intake Grille Filter Can be Completely Removed Allowing Easy Cleaning
(Can be washed in water)
• Front grille
opens out
2-4. Quiet Operation
•Airflow passage configuration that assures quiet operation
1The unit incorporates a randompitch cycling fan.
By changing fan intervals, quiet operation is achieved
without reduction in airflow. Optimal design of the
airflow passage gives a shortened fan diameter
and allows a highly compact installation.
2Thanks to a highly practical casing configuration,
airflow generated by the fan is distributed uniformly.
3Due to careful positioning of the vertical vane axis,
air is blown evenly from the outlet. This prevents mixing
with secondary air and also suppresses condensation.
2-5. 4-way Piping Provides more Flexibility in Selecting Installation Sites
Model Cooling capacity / Heating capacity
PKFY-12NGMU-A 12,000 / 12,500 Btu/h
Indoor Unit Microprocessor
Remote controller
PKFY-12NGMU-A
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OC292-6
2-1. COMPACT DESIGN
The PKFY series models have been downsized and now require such minimal wall space that they can even be
installed above windows. For the PKFY series models, 14-9/16 inch (37 cm) of wall space between the ceiling and the
window allows “above window” installation.
2-2. A FURTHER REFINEMENT OF COMFORT WITH NISE SUPPRESSION
Remarkably tow-noise operation has been achieved through the development of a “near -silent” fan and the design
which minimises air flow resistance.
2-3. AUTO FLAP SHUTTER
With a simple flick of the OFF switch the air outlet can be closed off with a shutter. The shutter also functions as a flap
during operation to adjust the air flow angle, with “Auto Angle” securing a comfortable air flow.
2-4. INSTALLATION : FAST AND ENDLESSLY ADAPTABLE
(1) Multi-directional piping
Multi directional drain and refrigerant piping radically improves flexibility in selecting installation layouts.
PKFY- • NFMU-A models boast refrigerant piping in 4 directions and drain piping 2 directions.
(2) Back plate installation guide
The back plate installation guide gives clear instructions on installation positions. The enlarged back plate secures the
unit firmly to the wall, while the support piece which lifts the unit makes left side piping work much easier.
(3) Easily removable filter
The presence of thumbscrews on the filters means that the filters can be quickly and smoothly removed.
Models Cooling capacity / Heating capacity
PKFY-20NFMU-A 20,000 / 22,500 Btu/h
PKFY-32NFMU-A 32,000 / 35,500 Btu/h
Indoor Unit
Microprocessor
Remote controller
PKFY-20NFMU-A
PKFY-32NFMU-A
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OC292-7
PART NAMES AND FUNCTIONS
3
● Indoor Unit
[PKFY-08NAMU-A]
Air intake Air intake grille
Filter
Air outlet
Guide vane Auto vane
[PKFY-12NGMU-A]
Air intake
Room air is
suctioned in here.
Removes dust and dirt
from the intake air.
Filter Air intake grilles
Air outletAir outlet
Auto vane
Air flow can be changed to
horizontally by moving the
Guide vane to the left or right.
Guide vane
[PKFY-20NFMU-A]
[PKFY-32NFMU-A]
Air intake grille Air intake
Filter Auto vane
Air outlet
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OC292-8
Press this button to switch the cooler,
electronic dry (dehumidify), automatic
and heater modes.
OPERATION SWITCH button
This sets the room temperature. The
temperature setting can be performed
in 2_F units
Setting range
Cooler 67_F to 87_F
Heater 63_F to 83_F
TEMP. ADJUSTMENT button
This switches between continuous
operation and the timer operation.
TIMER button
This switches between the operation
and stop modes each time it is pressed.
The lamp on this button lights during
operation.
ON/OFF button
Only press this button to perform an
inspection check or test operation.
Do not use it for normal operation.
CHECK-TEST RUN button
This switch the horizontal fan motion
ON and OFF.
(Not available for this model.)
LOUVER button
This adjusts the vertical angle of the
ventilation.
AIR DIRECTION button
This resets the filter service indication
display
FILTER button
This sets the current time, start time
and stop time.
TIME SETTING button
This sets the ventilation fan speed.
AIR SPEED button
● Operation buttons
● Remote controller
● Once the operation of the unit is set, subsequent operations can only be performed by pressing the ON/OFF button
repeatedly.
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