York YU2E14YEEBMHO-X User manual

New ReleasedService Manual
Issue Date
Nov 27, 2019
Multi Inverter Outdoor
Form: MMULIT50-191127
Multi Inverter R-410A 50Hz Heat Pump
YU2E14YEEBMHO-X
YU2E18YEEBMHO-X
YU3E21YEEBMHO-X
YU3E27YEEBMHO-X
YU4E28YEEBMHO-X
YU4E36YEEBMHO-X
YU5E42YEEBMHO-X

1
CONTENTS
1. General information of Outdoor Units .......................................... 2
2. Features .......................................................................................... 3
3. Dimensions ..................................................................................... 4
4. Refrigeration Cycle Diagram ......................................................... 5
5. Wiring diagram ............................................................................... 7
6. Indoor units combination ............................................................ 12
7. Sound Levels ................................................................................ 14
8. Installation Details ....................................................................... 15
9. Electronic control function ........................................................ 25
10. Troubleshooting ........................................................................ 30

2
1. General information of Outdoor Units
Model name Dimension (mm) Compressor
YU2E14YEEBMHO-X 800x333x554 KSN140D21UFZ
YU2E18YEEBMHO-X 800x333x554 ASM135D23UFZ
YU3E21YEEBMHO-X 845x363x702 ASM135D23UFZ
YU3E27YEEBMHO-X 845x363x702 ATF235D22UMT
YU4E28YEEBMHO-X 946x410x810 ATF235D22UMT
YU4E36YEEBMHO-X 946x410x810 ATF310D43UMT
YU5E42YEEBMHO-X 946x410x810 ATF310D43UMT

3
2. Features
The hydrophilic fin can improve the heating efficiency at operation mode.
It protects the valves and prevents water from dripping.
4 way valve control
It is only operated in the heating operation mode except defrosting operation.
Outdoor unit
Power relay control
Hydrophilic aluminum fin
Anti-rust cabinet
Valve protection cover
Low noise air flow system
Discharge pipe temperature protection

4
3. Dimensions
Model Unit：mm
W D H W1 A B
YU2E14YEEBMHO-X 800 333 554 860 514 340
YU2E18YEEBMHO-X 800 333 554 860 514 340
YU3E21YEEBMHO-X 845 363 702 923 540 350
YU3E27YEEBMHO-X 845 363 702 923 540 350
YU4E28YEEBMHO-X 946 410 810 1034 673 403
YU4E36YEEBMHO-X 946 410 810 1034 673 403
YU5E42YEEBMHO-X 946 410 810 1034 673 403
A
B
D

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4. Refrigeration Cycle Diagram
4.1 Refrigeration circuit drawing of inverter 1 drive 2 type
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 CAPILLARY A
CHECK VALVE
CAPILLARY TUBE
EXV B CAPILLARY B
LIQUID VALVE B
GAS VALVE B
Accumulator
T2B-A Evaporator
temp. sensor outlet
T2B-B
4.2 Refrigeration circuit drawing of inverter 1 drive 3 type
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
EXV A CAPILLARY A
CHECK VALVE
CAPILLARY TUBE
EXV B CAPILLARY B
LIQUID VALVE B
GAS VALVE B
EXV C CAPILLARY C
LIQUID VALVE C
GAS VALVE C
Accumulator
T2B-A
Evaporator
temp. sensor outlet
T2B-B
T2B-C

6
4.3 Refrigeration circuit drawing of inverter 1 drive 4 type
LIQUID VALVE A
GAS VALVE A
HEAT
EXCH ANGE
(EVAP ORATOR)
HEAT
EXCH ANGE
(CONDEN SER)
Compressor
4-WAY V ALVE
COO LING
HEATING
T2 Evaporator
temp. sensor
middle
T1 Room
temp. sensor
T3
Condenser
temp. sensor
T5 Discharge
temp. sensor
T4 A mbient
temp. sensor
INDOOR OUTDOOR
EXV A CAPILLARY A
CHECK VALVE
CAPILLARY TUBE
EXV B CAPILLARY B
LIQUID VALVE B
GAS VALVE B
EXV C CAPILLARY C
LIQ UID VALVE C
GAS VALVE C
EXV D CAPILLARY D
LIQ UID VALVE D
GAS VALVE D
Accumulator
High pressure
switch
Low pressure
switch
T2B-A Evapora tor
temp. sensor outlet
T2B-B
T2B-C
T2B-D
4.4 Refrigeration circuit drawing of inverter 1 drive 5 type
LIQUID VALVE A
GAS VALVE A
HEAT
EXCHANGE
(EVAPORATOR)
HEAT
EXCHANGE
(CONDENSER)
COOLING
HEATING
T2 Evaporator
temp. sensor
middle
T1 Room
temp. sensor
T3
Condenser
temp. sensor
T4 Ambient
temp. sensor
INDOOR OUTDOOR
EXV A CAPILLARY A
CHECK VALVE
CAPILLARY TUBE
EXV B CAPILLARY B
LIQUID VALVE B
GAS VALVE B
EXV C CAPILLARY C
LIQUID VALVE C
GAS VALVE C
EXV D CAPILLARY D
LIQUID VALVE D
GAS VALVE D
EXV E CAPILLARY E
LIQUID VALVE E
GAS VALVE E
Compressor
4-WAY VALVE
T5 Discharge
temp. sensor
Accumulator
High pressure
switch
Low pressure
switch
T2B-A Evaporator
temp. sensor outlet
T2B-B
T2B-C
T2B-D
T2B-E

7
5. Wiring diagram
YU2E14YEEBMHO-X, YU2E18YEEBMHO-X

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Note: S(1)&S(2) are used in other type of models. They don't need to be connected in multi
models.
YU3E21YEEBMHO-X, YU3E27YEEBMHO-X

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