Pioneer YN018GMFI16M2D User manual

CONDENSING UNITS
RevisionB:ODMI‐C1‐1310
ModelNumbers:
YN018GMFI16M2D(Dual) YN030GMFI16M3D(Trio)
YN027GMFI16M3D(Trio) YN036GMFI16M4D(Quad)
WARNING
 Installation MUST conform with local building codes or, in the absence of local
codes, with the National Electrical Code NFPA70/ANSI C1-1993 or current edition
and Canadian Electrical Code Part1 CSA C.22.1.
 The information contained in the manual is intended for use by a qualified service
technician familiar with safety procedures and equipped with the proper tools and
test instruments
 Installation or repairs made by unqualified persons can result in hazards to you
and others.
 Failure to carefully read and follow all instructions in this manual can result in
equipment malfunction, property damage, personal injury and/or death.
Table of Contents
1. Product Specifications
2. Indoor Unit Combination
3. Suggested Indoor Unit Model Numbers
4. Dimension Of Outdoor Unit
5. Refrigerant Cycle Diagram
6. Installation Details
7. Electronic Function
8. Wiring Diagrams And Electrical Trouble Shooting
9. Disassembly Instructions
10. Exploded View
YN-M SERIES MULTI SPLIT SYSTEM
MULTI CIRCUIT OUTDOOR UNITS
(2, 3 AND 4 ZONES) SERVICE MANUAL 
2014ANDNEWERMODELS(50130070AND
NEWERSerials)
Parker Davis HVAC International, Inc.
2260 NW 102nd Place, Doral, FL 33172
Ph: [phone] [email protected]

CONTENTS
1. Product Specifications ................................................................................................................................................................. 3
2. Indoor Unit Combination .............................................................................................................................................................. 4
3. Suggested Indoor Unit Model Numbers ...................................................................................................................................... 5
4. Dimension Of Outdoor Unit ......................................................................................................................................................... 6
5. Refrigerant Cycle Diagram .......................................................................................................................................................... 7
6. Installation Details ....................................................................................................................................................................... 8
6.1 Wrench torque sheet for installation ..................................................................................................................................... 8
6.2 Connecting the cables .......................................................................................................................................................... 8
6.3 Pipe length and the elevation ................................................................................................................................................ 8
6.4 Installation for the first time ................................................................................................................................................... 8
6.5 Adding the refrigerant after running the system for many years ......................................................................................... 10
6.6 Re-installation while the indoor unit need to be repaired .................................................................................................... 11
6.7 Re-installation while the outdoor unit need to be repaired .................................................................................................. 12
7. Electronic Function .................................................................................................................................................................... 13
7.1 Abbreviation ........................................................................................................................................................................ 13
7.2 Electric control working environment. ................................................................................................................................. 13
7.3 Main Protection ................................................................................................................................................................... 13
7.4 Control and Functions ......................................................................................................................................................... 15
8. Wiring Diagrams ........................................................................................................................................................................ 19
9. Troubleshooting ........................................................................................................................................................................ 31
9.1Safety ................................................................................................................................................................................... 31
9.2 Indoor Unit Error Display ..................................................................................................................................................... 32
9.3 Outdoor Unit Display ...........................................................................................................................................................
34
9.4 Diagnosis and Solution ....................................................................................................................................................... 38
9.5 Trouble Criterion Of Main Parts. ......................................................................................................................................... 82
10. Disassembly Instructions ...................................................................................................................................................... 93
 Model: YN018GMFI16M2D (Dual Split) .......................................................................................................................... 93
 Model: YN027GMFI16M3D (Triple Split) ...................................................................................................................... 100
 Model: YN030GMFI16M3D (Triple Split) ...................................................................................................................... 107
 Model: YN036GMFI16M4D (Quad Split) ....................................................................................................................... 115
11. Exploded View .................................................................................................................................................................... 122

ProductSpecifications
Model YN018GMFI16M2D YN027GMFI16M3D YN030GMFI16M3D YN036GMFI16M4D
Power supply Ph-V-Hz 230V~ 60Hz, 1Ph 230V~ 60Hz, 1Ph 230V~ 60Hz, 1Ph 230V~ 60Hz, 1Ph
MINIMUM CIRCUIT AMPACITY A 11.0 18.0 18.0 27.0
MAX.FUSE A 15.0 30.0 30.0 40.0
Starting current A ---- ---- ---- -----
Compressor
Model DA130S1C-20FZ DA150S1C-20FZ DA250S2C-30MT TNB306FPGMC-L
Type Twin-rotary Twin-rotary Twin-rotary Twin-rotary
Brand GMCC GMCC GMCC MITSUBISHI
Capacity Btu/h 13170 15286 26289 33711
Input W 990 1150 2120 3010
Rated current(RLA) A 4.97 9.7 8.85 13.5
Locked rotor Amp(LRA) A ---- ---- ---- -----
Thermal protector 1NT01L-4639 or KSD301 KSD301 ---- -----
Thermal protector position ---- EXTERNAL ---- -----
Capacitor uF - - - - - - - -
Refrigerant oil/oil charge ml ESTER OIL VG74/500 ESTER OIL VG74/500 ESTER OIL VG74/820 FV50S/1070
Outdoor fan motor
Model WZDK50-38G YDK53-6FB(B) WZDK72-38G WZDK180-38G
Brand PANASONIC Welling Panasonic Shibaura
Input W 50(Output) 136/130 72(Output) 180(Output)
RLA
A 0.74 0.74 0.7 1.3
LRA / 0.9 / /
Winding Resistance / 88.5/138 / /
Capacitor uF - - 2.5 - - - -
Speed r/min 750 930 / -- / 830 800 850
Outdoor air flow m3/h 2500 2700 3500 3800
Outdoor noise level dB(A) 57 60 63 65
Outdoor unit
Dimension(W*D*H) mm 845x320x700 845x320x700 900x315x860 990x345x965
Dimension(W*D*H) inch 33.27x12.6x27.56 33.27x12.6x27.56 35.43x12.40x33.86 38.98x13.58x37.99
Packing (W*D*H) mm 965x395x755 965x395x755 1043x395x915 1120x435x1100
Packing (W*D*H) inch 37.99x15.55x29.72 37.99x15.55x29.72 41.06x15.55x36.02 44.09x17.13x43.31
Net/Gross weight Kg 53.5 / 57 54 / 57.5 62/67 77 / 81
Net/Gross weight Pound 117.95/125.66 119.05/126.77 136.69/147.71 169.76/178.57
Refrigerant type oz R410A/51 R410A/92 R410A/88.2 R410A/95
Design pressure PSIG 540/300 540/300 540/300 540/340
Refrigerant piping
Liquid side/ Gas side mm(inch) 2 X Φ6.35/Φ9.52(1/4"/3/8") 3 x Φ6.35/Φ9.52(1/4"/3/8") 3 X Φ6.35/Φ9.52(1/4"/3/8") 4 x Φ6.35/Φ9.52(1/4"/3/8")
Max. length for all rooms m 30 45 45 60
Max. length for all rooms ft 98 148 148 197
Max. length for one indoor unit m 20 25 25 30
Max. length for one indoor unit ft 66 82 82 98
Max. height difference between
indoor and outdoor unit
OU higher than IU m 10 10 10 10
OU higher than IU ft 33 33 33 33
OU lower than IU m 15 15 15 15
OU lower than IU ft 49 49 49 49
Max. height difference between indoor units m 10 10 10 10
Max. height difference between indoor units ft 33 33 33 33
Connection wiring NO NO NO NO
Plug type NO NO NO NO
Thermostat type Remote control Remote control Remote control Remote control
Operation
temperature
cooling ℃ 0～50 0～50 0～50 -15～50
cooling ℉ 32～122 32～122 32～122 5～122
heating ℃ -15～24 -15～24 -15～24 -15～24
heating ℉ 5～76 5～75.2 5～75.2 5～75.2

1. Indoor Unit Combination
Multi DC
Outdoor Unit
Nominal
capacity
Suggested
Combination Limit
DUAL ZONE
(18K Nominal) 5.2kW
9
None
12
9+9
9+12
12+12(*)
Multi DC
Outdoor Unit
Nominal
capacity
Suggested
Combination Limit
TRIPLE ZONE
(27K Nominal) 7.5kW
9
There should be
only one Floor
Ceiling or Duct
unit.
12
18
9+9
9+12
9+18
12+12
12+18
9+9+9
9+9+12
9+12+12
12+12+12(*)
Multi DC
Outdoor Unit
Nominal
capacity
Suggested
Combination Limit
TRIPLE ZONE
(30K Nominal) 8.0kW
9
There should be
only one Floor
Ceiling or Duct
unit.
12
18
9+9
9+12
9+18
12+12
12+18
18+18
9+9+9
9+9+12
9+9+18
9+12+12
9+12+18
12+12+12
Multi DC
Outdoor Unit
Nominal
capacity
Suggested
Combination Limit
QUAD ZONE
(36K Nominal) 10.5kW
9
None
12
18
9+9
9+12
9+18
12+12
12+18
18+18
9+9+9
9+9+12
9+9+18
9+12+12
9+12+18
9+18+18
12+12+12
12+12+18
12+18+18
9+9+9+9
9+9+9+12
9+9+9+18
9+9+12+12
9+9+12+18
9+12+12+12
9+12+12+18
12+12+12+12
(*): NOTICE: This combination results in slightly reduced
performance. We recommend going one size up for the
outdoor section for obtaining fully rated performance.


2. Suggested Indoor Unit Model
Numbers
SUGGESTED INDOOR UNIT
YN018GMFI
16M2D
9K WB009GMFI16MLD
12K
WB012GMFI16MLD
CB012GLFI16MLD
RB012GMFI16MLD
UB012GMFI16MLD
FB012CMFI16MLD
SUGGESTED INDOOR UNIT
YN027GMFI 16M3D
9K WB009GMFI16MLD
12K
WB012GMFI16MLD
CB012GLFI16MLD
RB012GMFI16MLD
UB012GMFI16MLD
FB012CMFI16MLD
18K
WB018GMFI16MLD
CB018GLFI16MLD
RB018GMFI16MLD
UB018GMFI16MLD
SUGGESTED INDOOR UNIT
YN030GMFI 16M3D
9K WB009GMFI16MLD
12K
WB012GMFI16MLD
CB012GLFI16MLD
RB012GMFI16MLD
UB012GMFI16MLD
FB012CMFI16MLD
18K
WB018GMFI16MLD
CB018GLFI16MLD
RB018GMFI16MLD
UB018GMFI16MLD
SUGGESTED INDOOR UNIT
YN036GMFI 16M4D
9K WB009GMFI16MLD
12K
WB012GMFI16MLD
CB012GLFI16MLD
RB012GMFI16MLD
UB012GMFI16MLD
FB012CMFI16MLD
18K
WB018GMFI16MLD
CB018GLFI16MLD
RB018GMFI16MLD
UB018GMFI16MLD

3. Dimensions Of the Outdoor Units:
Model
Dimension mm (In.)
W D H W1
A
B
YN018GMFI16M2D
845 (33.3) 320 (12.6) 700 (27.6) 908 (35.7) 560 (22) 335 (13.2)
YN027GMFI16M3D
YN030GMFI16M3D 900 (35.4) 315 (12.4) 860 (33.9) 980 (38.6) 590 (23.2) 333 (13.1)
YN036GMFI16M4D 990 (39) 345 (13.6) 965 (38) 1075 (42.3) 624 (24.6) 366 (14.4)

4. Refrigerant Cycle Diagram
5.1Refrigeration circuit drawing of inverter dual zone (2 zones)
LIQUID VALVE A
GAS VALVE A
HEAT
EXCHANGE
(EVAPORATOR)
HEAT
EXCHANGE
(CONDENSER)
Compressor
4-WAY VALVE
COOLING
HEATING
T2 Evaporator
temp. sensor
middle
T1 Room
temp. sensor
T3
Condenser
temp. sensor
T5 Discharge
temp. sensor
T4 Ambient
temp. sensor
INDOOR OUTDOOR
EXV A CAPILIARY A
CHECK VALVE
CAPILIARY TUBE
EXV B CAPILIARY B
LIQUID VALVE B
GAS VALVE B
Accumulator
T2B-A Evaporator
temp. sensor outlet
T2B-B
5.2 Refrigeration circuit drawing of inverter triple zone (3 zones)
LIQUID VALVE A
GAS VALVE A
HEAT
EXCHANGE
(EVAPORATOR)
HEAT
EXCHANGE
(CONDENSER)
Compressor
4-WAY VALVE
COOLING
HEATING
T2 Evaporator
temp. sensor
middle
T1 Room
temp. sensor
T3
Condenser
temp. sensor
T5 Discharge
temp. sensor
T4 Ambient
temp. sensor
INDOOR OUTDOOR
EXV A CAPILIARY A
CHECK VALVE
CAPILIARY TUBE
EXV B CAPILIARY B
LIQUID VALVE B
GAS VALVE B
EXV C CAPILIARY C
LIQUID VALVE C
GAS VALVE C
Accumulator
T2B-A Evaporator
temp. sensor outlet
T2B-B
T2B-C

5.3 Refrigeration circuit drawing of inverter quad zone (4 zones)
LIQUID VALVE A
GAS VALVE A
HEAT
EXCHANGE
(EVAPORATOR)
HEAT
EXCHANGE
(CONDENSER)
Compressor
4-WAY VALVE
COOLING
HEATING
T2 Evaporator
temp. sensor
middle
T1 Room
temp. sensor
T3
Condenser
temp. sensor
T5 Discharge
temp. sensor
T4 Ambient
temp. sensor
INDOOR OUTDOOR
EXV A CAPILIARY A
CHECK VALVE
CAPILIARY TUBE
EXV B CAPILIARY B
LIQUID VALVE B
GAS VALVE B
EXV C CAPILIARY C
LIQUID VALVE C
GAS VALVE C
EXV D CAPILIARY D
LIQUID VALVE D
GAS VALVE D
Accumulator
High pressure
switch
Low pressure
switch
T2B-A Evaporator
temp. sensor outlet
T2B-B
T2B-C
T2B-D

5. Installation Details
6.1 Wrench torque sheet for installation
Outside diameter Torque Additional tightening
torque
Ф6.35mm 1/4in 1500N.cm (11 Lbf.Ft). 1600N.cm (12 Lbf.Ft.)
Ф9.52mm 3/8in 2500N.cm (18 Lbf.Ft.) 2600N.cm (19 Lbf.Ft)
Ф12.7mm 1/2in 3500N.cm (26 Lbf.Ft) 3600N.cm (27 Lbf.Ft)
6.2 Connecting the cables
The power cord connection should be
selected according to the following
specifications sheet.
Unit AWG
Dual-zone (18K outdoor unit) 14
Tri-zone (27K/30K outdoor unit). 14
Quad-zone (36K outdoor unit) 12
For indoor unit and outdoor unit connection
wire, 16AWG is used for all connections.
6.3 Pipe length and the elevation
Maximum piping length and height difference
Dual Trio Quad
Max. length for all zones 30 (100ft) 45 (150ft) 60 (200ft)
Max. length for each zone 20 (65ft) 25 (80ft) 30 (100ft)
Max. height
difference
between IU
and OU
OU higher
than IU 10 (33ft) 10 (33ft) 10 (33ft)
OU lower
than IU 15 (50ft) 15 (50ft) 15 (50ft)
Max. height difference
between Indoor Units 10 (33ft) 10 (33ft) 10 (33ft)
Additional refrigerant charge
Dual Triple Quad
Pre-charged for
total pipe length 15 (50ft) 22.5 (75ft) 30 (100ft)
Additional
refrigerant
charge
g 15g per
Additional
Meter
15g per
Additional
Meter
15 x (length
for all rooms -
30)
oz 0.16 Ozs per
Additional
Foot
0.16 Ozs per
Additional
Foot)
0.16 Ozs per
Additional
Foot
Caution:
● Refrigerant pipe diameter differs according to
indoor unit connected. When extending the
pipes, refer to the tables below.
● When refrigerant pipe diameter is different
from that of outdoor unit union (for 12K and
18K indoor units), additional brass adapter
union (supplied) needs to be used on outdoor
unit union to change the size.
Indoor unit Extension pipe diameter
(mm/inch)
Model Pipe diameter
(mm/inch)
9K Liquid 6.35 (1/4) Liquid 6.35 (1/4)
Gas 9.52 (3/8) Gas 9.52 (3/8)
12K 18K Liquid 6.35 (1/4) Liquid 6.35 (1/4)
Gas 12.7 (1/2) Gas 12.7 (1/2)
Outdoor unit union diameter (mm/inch)
Indoor unit A/B/C/D Liquid 6.35 (1/4)
Gas 9.52 (3/8)
6.4 Installation for the first time
Air and moisture in the refrigerant system will
create undesirable effects as listed below:
● Pressure in the system rises.
● Operating current rises.
● Cooling or heating efficiency drops.
● Moisture in the refrigerant circuit may freeze
and block capillary tubing.
● Moisture may lead to corrosion of parts in the
refrigerant system (compressor failure!).
Therefore, the indoor units and the pipes
between indoor and outdoor units must be leak
tested and fully evacuated to remove the air and
moisture from the system.
Leak Check (Soap and Water Method):
Apply soap water or a liquid natural
detergent on the indoor unit connections and
outdoor unit connections by a soft brush to check
for leakage of the connecting points of the piping.
If bubbles exist, the pipes have leakage.

1. Evacuation using a vacuum pump
1. Completely tighten the flare nuts of the indoor
and outdoor units, confirm that both the 2-way
and 3-way valves are set to the fully closed
position.
2. Connect the low side hose of the charging
manifold set to the 3-way valve's gas service
port.
3. Connect the Middle hose of the charging
manifold set to the vacuum pump.
4. Fully open the Low side valve of the charging
manifold set.
5. Operate the vacuum pump to evacuate.
6. Make evacuation for 30 minutes and check
whether the pressure gauge indicates as low as
-0.1Mpa (14.5Psi). If the meter does not indicate
-0.1Mpa (14.5Psi) after pumping 30 minutes,
keep the pump on for 20 minutes more. If the
pressure reading can not be obtained as low as
-0.1Mpa (14.5Psi) after pumping for 50 minutes,
please check if there is any leakage points.
After vacuuming, fully close the low side valve
of the charging manifold set and than turn off
the vacuum pump. Confirm that the pressure
gauge needle does not move (within
approximately 15 minutes after turning off the
vacuum pump).
7. Turn on the core of the 3-way valve (using a
properly sized Allen Wrench) about 45°
counterclockwise for 6 or 7seconds and
observe the sound of the refrigerant coming
out. Than re-tighten the valve core. Make
sure the pressure indicated on the low side
pressure gauge is a little higher than the
atmospheric pressure. Then remove the
charging hose from the service port of the 3
way valve.
8. Fully open the valve cores of both 2 way
valve and 3 way valves and then securely
tighten the brass valve cover caps.
2. Air purging by refrigerant
Procedure:
1). Confirm that both the 2-way and 3-way
service valves are set to the closed
position.
2). Connect the charging set and a charging
cylinder to the service port of the 3-way
valve.
3). Air purging:
Open the valves on the charging cylinder and
the charging manifold set. Purge the air by
loosening the flare nut on the 2-way valve
approximately 45’ for 3 seconds then
closing it for 1 minute; repeat this for 3
additional times.
After purging the air, use a torque wrench to
tighten the flare nut on the 2-way valve.
4). Check for any gas leakage:
Check all flare connections for gas leakage.
5). Discharge the refrigerant:
Close the valve on the charging cylinder and
discharge the refrigerant by loosening the
flare nut on the 2-way valve approximately
45’ until the gauge indicates approximately
0.3Mpa (45Psi) to 0.5 Mpa (70Psi)..
Tighten the flare nut fully.
6). Disconnect the charge set and the
charging cylinder and open both cores of
the the 2-way and 3-way valves to fully
open position.
Be sure to use a proper size hexagonal (Allen)
wrench to operate the valve stems.
7). Mount the valve stem caps and the
service port cap.
Be sure to use a torque wrench to tighten the
service port cap to a torque 18N·m.
Be sure to check the for gas leakages.

3. Adding refrigerant if the pipe length
exceeds length for factory pre-charge pipe
length value.
Procedure:
1). Connect the charging hose to the
charging cylinder, open both the 2-way
valve and the 3-way valve.
Connect the charging hose which you
disconnected from the vacuum pump to the valve
at the bottom of the cylinder. If the refrigerant is
R410A, make sure the cylinder is upside down to
ensure liquid charge.
2). Purge the air from the charging hose.
Open the valve at the bottom of the cylinder and
press the check valve on the charge set to purge
the air (be careful of the liquid refrigerant).
3) Put the charging cylinder onto an electronic
scale and record the weight.
4) Operate the air conditioner at the cooling
mode.
5) Open the valves (Low side) on the
charging set and charge the system with
liquid refrigerant.
6).When the electronic scale displays the
proper weight (refer to the table),
disconnect the charge hose from the 3-way
valve’s service port immediately and turn
off the air conditioner
7). Mount the valve stem caps and the
service port cap.
Be sure to use a torque wrench to tighten the
service port cap to a torque 18N·m.
Be sure to check the gas leakages.
6.5 Adding the refrigerant after running
the system for many years
(Recommended only if the refrigerant
being added does not exceed 10% of the
total refrigerant amount. Otherwise,
remove the remaining refrigerant entirely
and recharge fully).
Procedure
1). Connect the charging hose to the 3-way
service port, open the 2-way valve and the
3-way valve.
Connect the charge hose to the valve at the
bottom of the cylinder. If the refrigerant is R410A,
make the cylinder is upside down to ensure liquid
charge.
2). Purge the air from the charge hose.
Open the valve at the bottom of the cylinder and
press the check valve on the charge set to purge
the air (be careful of the liquid refrigerant).
3) Put the charging cylinder onto an electronic
scale and record the weight.
4) Operate the system at the cooling mode.
5) Open the valve (Low side) on the charging
set and charge the system with liquid
refrigerant.
6).When the electronic scale displays the
proper weight (refer to the gauge and the
pressure of the low side), disconnect the
charging hose from the 3-way valve’s
service port immediately and turn off the air
conditioner before disconnecting the hose.
7). Mount the valve stem caps and the
service port cap. Use torque wrench to
tighten the service port cap to a torque of
18N.m.
Be sure to check for any gas leakages.