Chigo CHV Mini Series User manual

Commercial Air Conditioners
Service
Manual
R410A
Series

CHV Mini VRF 50/60Hz
201908 1
CONTENTS
CONTENTS
Part 1General Information ................................................................................. 3
Part 2Outdoor Units ……………………................................................................... 12
Part 3Installation .............................................................................................. 65
Part 4 Troubleshooting ...................................................................................... 81

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Part 1
General Information
1Indoor and Outdoor Unit Capacities ......................................................4
Part 1 -General Information
3Nomenclature…………………..................................................................... 7
2External Appearance..............................................................................5
4Combination Ratio................................................................................. 7
5Features……………................................................................................... 8

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CHV Mini VRF 50/60Hz
1. Indoor and Outdoor Unit Capacities
1.1 Indoor Units
Table 1-1.1: Standard indoor unit abbreviation codes
Abbreviation
code Type
GWall-mounted
LD Floor & Ceiling
TA Low ESP Short Ducted
TB Medium ESP Ducted
TH High ESP Ducted
Abbreviation
code Type
Q1 One-way Cassette
Q2 Two-way Cassette
Q4 Compact four-way Cassette
QFour-way Cassette
QR Round-flow Cassette
FFloor Standing
Table 1-1.2: Standard indoor unit capacity range
Capacity Capacity
kW index Q1 Q2 Q4
Q
QR
F
G
LD
TA TB TH
2.2 22 22 —22 ———22 —22 ——
2.8 28 28 —28 ———28 —28 ——
3.6 36 36 —36 ———36 —36 ——
4.5 45 45 45 45 ———45 45 45 ——
5.6 56 56 56 —56 56 —56 56 56 ——
7.1 71 71 71 —71 71 —71 71 71 71 71
8.0 80 —80 —80 80 —80 80 —80 80
9.0 90 — — — 90 90 ——90 —90 90
10.0 100 — — — 100 100 100 — — — 100 100
11.2 112 — — — 112 112 112 —112 — — —
12.0 120 — — — — — — — — — 120 120
12.5 125 — — — 125 125 125 — — — — —
14.0 140 ———140 140 140 —140 — — —
15.0 150 — — — — — — — — — 150 150
16.0 160 — — — 160 160 160 —160 — — —
1.2Outdoor Units
Table 1-1.3: Outdoor unit capacity range
Capacity 8kW 10kW 12.5kW 14kW 16kW
Model CHV-DH080W/R1 CHV-DH100W/R1 CHV-DH125W/R1 CHV-DH140W/R1 CHV-DH160W/R1

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Part 1 -General Information
2. External Appearance
2.1 Indoor Units
Table 1-2.1: Standard indoor unit appearance
One-way Cassette
Q1
Two-way Cassette
Q2
Compact Four-way Cassette
Q4
Four-way Cassette
Q
Round-flow Cassette
QR
Floor Standing
F
Wall-mounted
G
Floor & Ceiling
LD
Low ESP Short Ducted
TA
Medium ESP Ducted
TB
High ESP Ducted
TH

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2.2 Outdoor Units
Table 1-2.2: Outdoor unit appearance
8kW 10kW 12.5/14/16kW
Model name Net dimension(mm)Net/Gross weight (kg) Power supply
CHV-DH080W/R1
Width:935
Height: 702
Depth:383
47/50 220~240V/1N/50Hz
CHV-DH100W/R1
Width:1032
Height: 810
Depth:445
60/65220~240V/1N/50Hz
CHV-DH125W/R1
Width:1100
Height: 870
Depth:528
85/95 220~240V/1N/50Hz
CHV-DH140W/R1
Width:1100
Height: 870
Depth:528
90/100 220~240V/1N/50Hz
CHV-DH160W/R1
Width:1100
Height: 870
Depth:528
90/100 220~240V/1N/50Hz
Table 1-2.3: Outdoor unit specification

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Part 1 -General Information
4. Combination Ratio
Table 1-4.1: Indoor and outdoor unit combination ratio limitations
Type Minimum combination ratio Maximum combination ratio
(Standard indoor units)
CHV Mini
Series outdoor units 50% 130%
Sum of capacity indexes of the indoor units
Combination ratio =Capacity index of the outdoor units
3. Nomenclature
Cooling Capacity (×100W )
Side Discharge Outdoor Unit
All DC Inverter
Chigo VRF
Refrigerant Type
R1: R410A
Power Supply
-- 220~240V, 50Hz, 1ph
Z380~415V, 50Hz, 3ph
CHV-DH100W/R1
Outdoor Unit

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5. Features
5.1 Wide application
The All DC Inverter Mini VRF system is a highly efficient solution for small commercial buildings requiring heating and
cooling of up to 9 zones with one outdoor unit. Such as villa, restaurant, school etc.
Chigo offers various indoor units, more than 100 models of 11 types.Capacity ranges are from 2.2kW to 16kW. It is all
compliance with residential and light commercial place.Our systems can be operated up to 130%of capacity which
allows any system to be designed to the customers’ and applications’ needs.

Compressor
(Twin Rotary) structure
5.3 High performance heat exchanger
The new designed window fins enlarge the heat-exchanging area, which
decrease the air resistance, save more power and enhance heat exchange
performance.
Hydrophilic film fins and inner-grooved copper pipes optimize heat
exchange efficiency.
5.5 Quick warm-up & cool-down design and less temperature fluctuation
Utilizing the inverter compressor benefits,
the system can reach All load quickly and
shorten warm-up or cool-down time for an
immediate comfortable air solution.
Less temperature fluctuation will create a
better living environment.
5.4 Low-operating sound design
Optimally design fan shape and new designed discharge air grille and air deflector, auxiliary with DC fan motor and
world-famous compressor, making higher air volume and lower operation sound.
5.2 High efficient DC inverter compressor
All DC inverter Mini VRF adopts highly intelligent inverter-driven compressor. This advanced technology enables the
output of the outdoor unit to be modulated by the real heat load demands.
This advanced system ensures precise temperature regulation and highly efficient energy usage, making a significant
contribution to the limiting the impact on the environment.
Highly Efficient DC Motor:
-Creative motor core design
-High density neodymium magnet
-Concentrated type stator
-Wider operating frequency range
Better balance and Extremely Low Vibration:
-Twin eccentric cams
-2 balance weights
Highly Stable Moving Parts:
-Optimal material matching rollers and vanes
-Optimize compressor drive technology
-Highly robust bearings
-Compact structure
Fluctuation of room temperature
1
2
Temp.
Time
Notn-inverter
Cooling operation
Inverter
New design Original design
High efficiency inner-thread pipe,
enhance heat transfer.
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CHV Mini Series Service Manual
5.6 Wide operation temperature range
No matter in extremely cold winter when outdoor
temperature gets as low as -15°C or in hot summer
when temperature is up to 55°C, the Mini VRF system
will keep stable performance.
5.7 Flexible piping design
5.8 Simple signal line connection
Installation is much easier as the communication wiring between indoor & outdoor units can be shared.
The Pand the Q are non-polarity terminals, this is capable to reduce the risk of communication problems and simplify
the connecting operation.
Piping Length Permitted Value
Total pipelength 100/120m
Longest pipelength Actual 60m
Equivalent 70m
The first distributor to the last IDU 20m
Height difference between
IDU~ODU
ODU above 30m
ODU below 20m
Height difference between IDU~IDU 8m
5.9 Auto address setting function
The addresses of indoor units can be set automatically by outdoor unit. It has capability to reduce artificial faults and
manual works.
Wireless controller can enquire and modify the address of each indoor unit.
Outdoor unit can
distribute address
for indoor unit
automatically.Shield signal wire
Wireless controller can enquire
and modify address of each IDU.
Table 1-5.1: Piping parameters

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5.12 Easy installation
The Mini VRF can be transported by elevator which makes
installation dramatically easy, and effectively reduces time and
labor thanks to the small size.
The Mini VRF units are more compact, resulting in significant
savings in installation space. It is particularly suitable for small
offices, villas, shops, etc.
5.13 Easy maintenance
Forced cooling button makes outdoor unit run in cooling mode at any
condition, so it is very easy for you to charge refrigerant to the system
when it needs to be done. The self-diagnosis function detects
malfunctions in major locations in the system and displays the type of
malfunction and location. This allows service and maintenance to be
performed more efficiently.
5.11 Easy piping connection
Offering four directions to connect pipes and wirings to meet
various installation requests.
Also there is a cover protecting the valves.
Easy to transport
Right side
Upper side
Back side
Front side
Bottom side
5.10 Smart electronic control design
The radiation fin is made of aluminum panels fitting together seamlessly. This helps to cool down the IPM, it has better
performance compared to air cooling for PCB.
With PFC(Power Factor Corrector) module, the power utilization rate is increased, the power factor is capable to be 98%,
lead to higher efficiency.

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Part 2 -Outdoor Units
Part 2
Outdoor Units
1Specifications ...................................................................................... 14
2Dimensions ......................................................................................... 16
3Service Space ...................................................................................... 17
4Piping Diagrams .................................................................................. 18
5Wiring Diagrams ................................................................................. 19
6Field Wiring ........................................................................................ 21
7Capacity Tables ................................................................................... 22
8Electric Characteristics ........................................................................ 62
9Sound Levels ....................................................................................... 63
10 Operation Limits ................................................................................. 64

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1. Specifications
Model name CHV-DH080W/R1 CHV-DH100W/R1
CHV-DH080W/NR1 CHV-DH100W/NR1
Power supply 220~240V/1N/50Hz 220~240V/1N/50Hz
220~240V/1N/60Hz 220~240V/1N/60Hz
Condition T1 T3 T1 T3
Performance data
Cooling
Capacity
HP 33.6
kW 87.2 10 9
Btu/h 27300 24570 34100 30690
RT 2.27 2.04 2.84 2.56
Power input kW 2.60 2.81 3.00 3.25
Rated current A11.8 14.2 13.6 16.4
EER W/W 3.08 2.56 3.33 2.77
Heating
Capacity
kW 911
Btu/h 30700 37500
RT 2.56 3.13
Power input kW 2.65 3.10
Rated current A12.0 14.0
COP W/W 3.39 3.55
Max. input consumption kW 3.96 4.40
Max. current A18 20
Capacity adjustment range 50%~130% 50%~130%
Compressor data
DC Inverter compressor
Quantity 1 1
Type Twin-rotary Compressor Twin-rotary Compressor
Brand Mitsubishi GMCC
Model SNB200FGMMC ATM240D57UMT
frequency range Hz 10~120 10~120
Crankcase heater W25 35
Compressor oil Model FV50S VG74
Original oil volume ml 400 670
Fan data
Fan motor
Type DC DC
Brand Yongan Yongan
Model DRN-310-75-8 DRN-310-90-8
Quantity 1 1
Insulation class B B
Protection class IPX4 IPX4
Power output W75 90
Fan blade
Material ASG20 ASG20
Type Axial Axial
Drive Direct-driven Direct-driven
Fan Quantity 1 1
Air flow m3/h 3300 4000
Physical data
Outdoor coil
Fin type Hydrophilic Aluminum Hydrophilic Aluminum
Tube diameter mm Ø7 Ø9.52
Number of rows 3 2
Coil length x height x width mm 784×630×40.11 1003×750×43.3
Tube type Inner-grooved copper tube Inner-grooved copper tube
Refrigerant
Type R410a R410a
Volume kg 2.0 2.6
Throttle type EXV EXV
Dimension (W*H*D) Net mm 935×702×383 1032x810x445
Packing mm 975×770×420 1075×875×495
Weight Net kg 47 60
Gross kg 50 65
Outdoor sound level dB(A) ≤54 ≤56
Maximum operating pressure MPa 4.5 4.5
Piping & wiring data
Pipe size Liquid pipe mm Ø9.52 Ø9.52
Gas pipe mm Ø15.88 Ø15.88
Connection wire
Power wire size mm23×4.0 3×4.0
Signal wire type 3-core shielded cable 3-core shielded cable
Signal wire size mm21.0 1.0
Operation temperature range
Cooling Outdoor side °C -5~55 -5~55
Indoor side °C 16~32 16~32
Heating Outdoor side °C -15~30 -15~30
Indoor side °C 16~32 16~32

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CHV Mini VRF 50/60Hz
Part 2 -Outdoor Units
Model name CHV-DH125W/R1 CHV-DH140W/R1 CHV-DH160W/R1
CHV-DH125W/NR1 CHV-DH140W/NR1 CHV-DH160W/NR1
Power supply 220~240V/1N/50Hz 220~240V/1N/50Hz 220~240V/1N/50Hz
220~240V/1N/60Hz 220~240V/1N/60Hz 220~240V/1N/60Hz
Condition T1 T3 T1 T3 T1 T3
Performance data
Cooling
Capacity
HP 4.5 55.7
kW 12.5 11.3 14 12.7 16 14.5
Btu/h 42600 38340 47800 43020 54600 49140
RT 3.55 3.20 3.98 3.58 4.55 4.10
Power input kW 3.20 3.46 3.75 4.06 4.75 5.14
Rated current A14.5 17.5 17.0 20.5 21.8 25.96
EER W/W 3.74 3.27 3.55 3.13 3.5 2.82
Heating
Capacity
kW 14 16 17
Btu/h 47800 54600 58000
RT 3.98 4.55 4.83
Power input kW 3.52 4.00 4.40
Rated current A16.1 18.2 20.0
COP W/W 3.83 3.72 3.61
Max. input consumption kW 7.48 7.48 7.48
Max. current A34 34 34
Capacity adjustment range 50%~130% 50%~130% 50%~130%
Compressor data
DC Inverter compressor
Quantity 1 1 1
Type Twin-rotary Compressor Twin-rotary Compressor Twin-rotary Compressor
Brand Mitsubishi Mitsubishi Mitsubishi
Model MNB40FEQMC MNB40FEQMC MNB40FEQMC
frequency range Hz 10~120 10~120 10~120
Crankcase heater W35 35 35
Compressor oil Model FV50S FV50S FV50S
Original oil volume ml 1100 1100 1100
Fan data
Fan motor
Type DC DC DC
Brand Nidec Nidec Nidec
Model DR-310-180-8 DR-310-180-8 DR-310-180-8
Quantity 1 1 1
Insulation class E E E
Protection class IP44 IP44 IP44
Power output W180 180 180
Fan blade
Material ASG20 ASG20 ASG20
Type Axial Axial Axial
Drive Direct-driven Direct-driven Direct-driven
Fan Quantity 1 1 1
Air flow m3/h 8000 8000 8000
Physical data
Outdoor coil
Fin type Hydrophilic Aluminum Hydrophilic Aluminum Hydrophilic Aluminum
Tube diameter mm Ø7 Ø7 Ø7
Number of rows 2 3 3
Coil length x height x width mm 1145×798×38.8 1145×798×58.2 1145×798×58.2
Tube type Inner-grooved copper Inner-grooved copper Inner-grooved copper
Refrigerant
Type R410a R410a R410a
Volume kg 3.0 3.8 3.8
Throttle type EXV EXV EXV
Dimension (W*H*D) Net mm 1100×870×528 1100×870×528 1100×870×528
Packing mm 1140×965×540 1140×965×540 1140×965×540
Weight Net kg 85 90 90
Gross kg 95 100 100
Outdoor sound level dB(A) ≤56 ≤57 ≤57
Maximum operating pressure MPa 4.5 4.5 4.5
Piping & wiring data
Pipe size Liquid pipe mm Ø9.52 Ø9.52 Ø9.52
Gas pipe mm Ø15.88 Ø15.88 Ø15.88
Connection wire
Power wire size mm23×6.0 3×6.0 3×6.0
Signal wire type 3-core shielded cable 3-core shielded cable 3-core shielded cable
Signal wire size mm21.0 1.0 1.0
Operation temperature range
Cooling Outdoor side °C -5~55 -5~55 -5~55
Indoor side °C 16~32 16~32 16~32
Heating Outdoor side °C -15~30 -15~30 -15~30
Indoor side °C 16~32 16~32 16~32
Notes:
1. The cooling conditions: indoor side 27°C(80.6°F) DB, 19°C(60°F)WB outdoor side 35°C(95°F) DB.
2. The heating conditions: indoor side 20°C(68°F) DB, 15°C(44.6°F)WB outdoor side 7°C(42.8°F)DB.
3. Sound level: measured at a point 1 m in front of the unit at a height of 1.5 m. During actual operation, these values are normally somewhat higher
as a result of ambient conditions.
4. The company reserves the right to revise product technical parameter without having to notify the clients individually.

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2. Dimensions
CHV-DH080W/R1
CHV-DH100W/R1
CHV-DH125W/R1
CHV-DH140W/R1
CHV-DH160W/R1

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3. Service Space
Part 2 -Outdoor Units
3.1 Single unit installation
>300
>600
>2000
Air outlet
Air inlet
Air inlet
>300
3.2 Parallel connect the two units or above
>600

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CHV Mini Series Service Manual
Oil separator: It is used to separate oil from high pressure & temperature gas refrigerant that is pumped out from
compressor. The separation efficiency is up to 99%, it makes the oil return back to each compressor very soon.
Gas-liquid separator: It is used to store the liquid refrigerant and oil, it can protect the compressor from liquid hammer.
4-way valve: Closed in cooling mode and open in heating mode.
Electronic expansion valve: The opening is of the valve is regulated according to the discharge air temperature of
compressor, used to regulating refrigerant flow.
High Pressure Switch: When the discharge pressure of compressor is 4.5Mpa or higher, the protection
switch will be triggered, and if the discharge pressure is down to 3.5MPa, the protection switch will be recovered.
Low Pressure Switch:When the gas pressure back to compressor is 0.05Mpa or lower, the protection switch will be
triggered, and if the discharge pressure is down to 0.15MPa, the protection switch will be recovered.
4. Piping Diagrams
Electronic
expansion Evaporator
valve
High pressure
switch Electronic
expansion
Condensor valve
Oil seperator
Oil return
capilary
Compressor
Low Low
pressure pressure
switch liquid
accumulator can

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Part 2 -Outdoor Units
5. Wiring Diagrams
CN25
CN3
PEQX E Y CR Y W G
CN5
4
Failure and Protection
E2
E6
EA
E9
E10
H0
H4
H5
H6
H10
P3
P4
Frequency conversion overcurrent protection
P5
P6
E1 Phase sequence failure
0 2 3
4
5
6
7
8
9
16
18
19
20
21
22
23
24
25
Outdoor after correction demand
26
10
12
13
17
27
14
15
Electronic expansion valve opening
28 29
30
Priority mode: 0:automatic selection; 1:Heating mode is preferred;
- - -
S1 Description
2Outdoor units type:10KW 3Outdoor units type:11.2KW 4Outdoor units type:12KW 5Outdoor units type:14KW
6Outdoor units type:16KW
SW2 Description (NO.1 & NO.2 & NO.3)
ON
123
Automatically select mode is preferred
ON
123
ON
123
Refrigeration mode is preferred
Heating mode is preferred
MOTOR
CN20
4-WAY
N
CN1(PFC2)
CN2(PFC1)
COMP1(U)
COMP2(V)
COMP3(W)
CN19
CN13
HEATY
CN5
P1(GND)
CN4(L)
CN3(N)
DC
CN21
VAL
CN10
Outdoor controller
Comp.
Inductor
EXV
U
P2(GND)
power supply
LN
BL
BR
H
L
BL
BR
BK CN23
HP
C
P7
P6
P5
T3
RD
(For DC motor
type only)
BL BL
RD
ELECTRICAL WIRING DIAGRAM
E4
E8
Eb
EC
EE
H7 The decrease in the number of indoor
H9
H11
P1
P2
P9 DC fan protection
P10 Protected against typhoons
P11 Refrigeration T2 high temperature protection
P13 The current detect abnormal protection
L0 DC compressor module fault
L1 DC low voltage protection
L2 DC high voltage protection
L4 MCE fault/synchronous/closed loop L5 Zero speed protection
L6
L7 Deficiency Protection of Compressor
L8 A moment before and after the speed change
＞ 15 Hz
L9
Pb
Set speed and the actual speed difference ＞ 15 Hz
1
11
2:Refrigeration mode preferred; 3:Only heating mode; 4:Only refrigeration mode;
1Outdoor units type:8KW
ON
123
Only heating mode
ON
123
ON
123
VIP+Automatically select mode is preferred
ON
123
According to the first mode SW1 Description (NO.1 & NO.2) SW1 Description
（ NO.3 & NO.4）
ON
12
ON
12
ON
12
ON
12
Standard silence mode
Nocturnal silence mode
High hydrostatic mode
Strong mute mode
ON
34
ON
34
ON
34
ON
34
Nighttime 6/10 Nighttime 8/10
Nighttime 8/12
Nighttime 6/12
To Indoor To centralized controller
Check Table
NUM Display content
Frequency, the number of indoor units
Outdoor power
Indoor demand
Run mode (0: shutdown; 2: refrigeration;
Actual operation ability
Fan speed state (0-8) T2 average temp.
T3 condensing temp.
T4 outdoor ambient temp. 3: heating; 4: forced refrigeration)
TP exhaust temp.
AC current
DC current
AC voltage
DC voltage
The expansion valve of indoor A
Sof version Memorizer version
Last failure or protection code
The rest
Comm. failure between indoor and outdoor units
Environment temperature sensor failure
Condensate temperature sensor failure
AC overvoltage/undervoltage protection
EEPROM failure
The protection of three times P6 in 30 minutes
High pressure protection
Low pressure protection
Excessive exhaust temperature protection
IPM modules protection
Comm. failure between master chip and DSP The protection of three times P2 in 30 minutes
The protection of three times P4 in 100 minutes
TP temperature sensor failure
Reserved
Reserved
Reserved
The number of indoor units
Reserved
Display content
NUM
Code Code
Failure or protection definition Failure or protection definition
Reserved
Reserved
Reserved
Reserved
The protection of two times P9 in 10 minutes
The protection of three times P3 in 60 minutes
The protection of two times P13 in 10 minutes
Reserved
Only refrigeration mode
Exhaust temp.
temp.
Outdoor ambient temp.
Crankcase heater
Outdoor Display Board
T4 TP
W
V
RD RD
WH
BL
CN24
LP
HP
LP
CN6 CN2CN1
YE/GN
YE/GN
OR
MOTOR
AC
YE/GN
Reserved Reserved Reserved
Reserved Reserved Reserved
5:VIP+Automatic mode priority; 6:According to the first mode
Frequency limit display: 0:unlimited frequency; 1:T3B frequency limits; 2:T4 frequency limits; 4:T5 frequency limits; 8:Voltage limiting frequency;
16:current limiting frequency; 32:T6 restrictions; 64:mute frequency limit
YE/GN
YE/GN
YE/GN
(For heat pump
type only)
(For AC motor type only)
(For certain
type only)
(For certain
type only)
The wire should be made a
circle around the magnetic loop.
The wire should be made a circle around
the magnetic loop.
(For certain
type only)
5.1 For 8/10kW