Vaillant V 10-025 NHI, V 10-035 NHI Training Manual

V 10-025 NW
V 10-035 NW

Training Manual

Air-conditioner - climaVAIR

Split Type

EN

2

Contents

Installations-und Wartungsanleitung Split-Gerät, wandhängend

Contents

1 Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3

1.1 Indoor Unit dimensions . . . . . . . . . . . . . . . . . . . . . . . 3

1.2 Outdoor Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

1.3 General Installation Diagram . . . . . . . . . . . . . . . . . . 5

2 Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

3 Connecting Diagram . . . . . . . . . . . . . . . . . . . . . 6

4 Technical Specifications . . . . . . . . . . . . . . . . . . .7

5 Temperatures by Capacities . . . . . . . . . . . . . . . 9

5.1 V 10-025 NW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

5.2 V 10-035 NW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

6 Wiring Circuit Diagrams . . . . . . . . . . . . . . . . . . 11

6.1 Wiring Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

6.2 Circuit Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13

7 Service Diagnosis . . . . . . . . . . . . . . . . . . . . . . . 16

7.1 Caution for Diagnosis . . . . . . . . . . . . . . . . . . . . . . . 16

7.2 Problem Symptoms and Measures . . . . . . . . . . . . 16

7.3 Error Codes and Description indoor display . . . . .17

7.3.1

Thermistor or Related Abnormality (indoor unit) 18

7.3.2

Indoor fan motor malfunction . . . . . . . . . . . . . . . . . .19

7.3.3

IPM protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

7.3.4

The IPM and outdoor PCB don’t communicate or

Related Abnormality . . . . . . . . . . . . . . . . . . . . . . . . . .21

7.3.5 Thermistor or Related Abnormality

(outdoor unit) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

7.3.6

Overheat Protection For Exhaust Temperature . . 23

7.3.7

The EEPROM Abnormality

(Indoor or outdoor unit) . . . . . . . . . . . . . . . . . . . . . . 24

7.3.8

Communication error between the indoor and

outdoor units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

7.3.9

High work-intense protection . . . . . . . . . . . . . . . . . 26

7.3.10

Power Supply Over or under voltage fault . . . . . . . 27

7.3.11 Loop of the station detect error . . . . . . . . . . . . . . . 28

7.3.12 Over-current of the compressor . . . . . . . . . . . . . . 28

8 Photographs . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

8.1 Indoor PCB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

8.2 Outdoor PCB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

8.3 Inverter Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31

8.4 V 10-025 NW Compressor . . . . . . . . . . . . . . . . . . . . 32

8.5 V 10-035 NW Compressor . . . . . . . . . . . . . . . . . . . . 32

9 PCB Explanation . . . . . . . . . . . . . . . . . . . . . . . 33

9.1 Functions and Control . . . . . . . . . . . . . . . . . . . . . . . 33

9.1.1 Main functions and control specification of indoor

unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

9.1.2 Temperature Adjusting function . . . . . . . . . . . . . . 33

9.1.3 Main functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

9.1.4 Special functions . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

9.2 Main functions and control specification of

outdoor unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

9.2.1 Outdoor Unit Operation Frequency and Control 36

9.2.2 Outdoor fan control . . . . . . . . . . . . . . . . . . . . . . . . . 37

9.2.3 Four-way Valve Control . . . . . . . . . . . . . . . . . . . . . . 37

9.2.4 Outdoor Defrosting Control . . . . . . . . . . . . . . . . . . 37

9.2.5 PTC Output Control . . . . . . . . . . . . . . . . . . . . . . . . .

38

9.2.6 System Protection Function . . . . . . . . . . . . . . . . . . 38

9.3 Function of Main Thermistor . . . . . . . . . . . . . . . . . 39

9.4 Value of Thermistor . . . . . . . . . . . . . . . . . . . . . . . . .40

9.4.1 Indoor Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

9.4.2 Outdoor Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46

Split Type Installation Manual 3EN

1 Dimensions

1.1 Indoor Unit dimensions

The indoor unit provides acclimatised air inside the
room to be acclimatised.

The dimensions and weights of the indoor unit are
shown on Figure 5.3 and Table 5.1, depending on the
model (please consult the model nameplate).
The dimensions are given in mm.

Fig. 1.1 Dimensions of the indoor unit.

Legend

H Height
L Length
D Depth

MODEL H L D kg

V 10-025 NHI 250 758 198 8,8

V 10-035 NHI 250 758 198 8,8

Table 1.1 Dimensions and weights of the indoor unit.

Dimensions 1

Split Type Installation Manual4

1.2 Outdoor Unit

The outdoor unit ensures that the absorbed air is
released to the outside from the room during operation
in cooling mode and that the heat introduced into the
room during operation in heat pump mode is taken from
the outside.

The dimensions and weights of the outdoor unit are
shown on Figures 5.4, 5.5 and Table 5.2, depending on
the model (please consult the model nameplate).
The dimensions are given in mm.

Fig. 1.2 Dimensions of the outdoor unit. (MONO)

Legend

H Height
L Length
D Depth
A Length of valves
B Distance between valves
C Distance from the second valve to the floor
F Distance from the third valve to the floor
I Distance between fixing holes
J Distance between fixing supports

MODELO H L D A B C I J kg

V 10-025 NHO 543 783 255 43 55 74 256 500 30

V 10-035 NHO 543 783 255 43 55 74 256 500 34

Table 1.2 Dimensions and weights of the outdoor unit.

1 Dimensions

Split Type Installation Manual 5EN

1.3 General Installation Diagram

Fig. 1.3 General diagram of the installation and the minimum

assembly distances. (MONO).

Legend

1 Indoor Unit
2 Outdoor Unit
3 Pipe for draining the condensed water
A Front separation (minimum 10 cm)
B Top separation in relation to the ceiling (minimum 5 cm)
D Height in relation to the floor (minimum 2 m)
E Side separation opposite side connections (minimum 10 cm)
F Rear separation (minimum 10 cm)
G Side separation connections side (minimum 15 cm)
H Front separation (minimum 60 cm)

Dimensions 1
Accesories 2

2 Accessories

Nr. Accessory (Indoor Unit) Quantity

1

Remote 1

2

Remote Control bracket 1

3

Batteries 2

4

Mounting plate 1

Table 2.1 Accessories supplied with the outdoor unit.

Nr. Accessory (Outdoor unit) Quantity

1

Rubber caps 2

2

Drain - elbow 1

Table 2.2 Accessories supplied with the outdoor unit.

Split Type Installation Manual6

3 Connecting Diagram

Fig. 3.1 Wiring indoor unit.

Electric Characteristics

V 10-025 NW V 10-035 NW

Voltage (V/Ph/Hz) 230/1/50 230/1/50

Supply

Supply section up to 25 meters (in mm2) 1,5 2,5

Indoor / Outdoor Indoor Indoor

Thermal-magnetic circuit breaker, type D (A) 10 16

Interconnection section up to 25 meters (mm

2

) 1,5 2,5

Inteconnect Shield or not (YES/NO) NO NO

Immediatte residual current protector (A) 0,03 0,03

Table 3.1 Electric Characteristics.

3 Connecting Diagram

Split Type Installation Manual 7EN

4 Technical Specifications

Units V 10-025 NW V 10-035 NW

Indoor Unit V 10-025 NHI V 10-035 NHI

Outdoor Unit V 10-025 NHO VH 10-035 NHO

Cooling Capacity

kW 2,70 3,55

BTU 9.215 12.115

Fg/h 2.322 3.053

Power input kW 0,84 1,10

Min - Max cooling capacity kW 1,20 - 3,50 1,00 - 4,30

Min - Max cooling power input kW 0,28 - 1,25 0,25 - 1,55

Nominal capacity (UK conditions) kW 2,26 2,93

Power input (UK conditions) kW 0,74 0,97

Operating current A 4,10 5,35

EER 3,21 3,23

Energy level class A A

Annual consumption kWh 420 550

Heating capacity

kW 3,35 3,90

BTU 11.433 13.310

Kcal/h 2.881 3.354

Power input kW 0,92 1,08

Min - Max heating capacity kW 1,00 - 4,00 1,30 - 4,50

Min - Max heating power input kW 0,27 - 1,25 0,33 - 1,52

Nominal capacity (UK conditions) kW 2,82 2,99

Power input (UK conditions) kW 0,93 1,02

Operating current A 4,64 5,05

COP 3,63 3,61

Energy level class

Max power input kW 1,50 1,90

Max operating current A 8,00 10,00

Indoor Unit

Air Flow volume m3/h 350/400/450 360/410/470

Remote control type Wireless - Infrared Wireless - Infrared

Remote control reference YR-H76 YR-H76

Sound Power level dB(A) 44/46/49 44/48/52

Sound Pressure level dB(A) 34/36/39 34/38/42

Catalogue sound pressure dB(A) 26/32/38 28/35/40

Testing conditions for sound pressure

Microphone directivity,distance 1.0m

Dimensions (HxLxD) mm 250x758x198 250x758x198

Net Weight Kg 8,8 8,8

Packaged dimensions HxLxD mm 312x857x292 312x857x292

Volume m3 0,078 0,078

Packaged weight Kg 11 11

Technical specifications 4

Split Type Installation Manual8

Units V 10-025 NW V 10-035 NW

Outdoor Unit

Air flow volume m3/h 1.900 1.600

Sound power level dB(A) 63 63

Sound pressure level dB(A) 50 50

Number of fans 1 1

Refrigerant R410A R410A

Refrigerant charge heat pump gr 650 940

Inverter DC / AC Inverter DC Inverter DC

Compressor type Rotary Rotary

Compressor Model DA89X1C-20FZ DA108X1C-20FZ3

Compressor Brand Toshiba-MEIZHI Toshiba-MEIZHI

Expansion system Capillary Capillary

Electric_electronic protections Voltage protection; current

Dimensions HxLxD mm 543 x 738 x 255 543 x 783 x 255

Dimensions Valves A/B/C mm 43 / 55 / 74 43 / 55 / 74

Dimensions Installation I/J mm 256 / 500 256 / 500

Net Weight Kg 30 34

Packaged dimensions HxLxD mm 614 x 930 x 340 614 x 930 x 340

Volume m3 0,194 0,194

Packaged weight heat pump Kg 34 38

Installation

Pipe connection liq/gas inches 1/4" - 3/8" 1/4" - 3/8"

PM (Max pressure) bar 41,5 41,5

pm (min pressure) bar 20 20

Max. piping lenght m 15 15

Max. Height IU under OU m 7,5 7,5

Max. Height OU under IU m 10 10

Chargeless lenght m 5 5

Additional charge per meter gr 20 20

Table 4.1 Technical specifications V 10-025 / 035 NW

Note!
As part of its policy for ongoing improvements of its
products, Vaillant reserves the right to modify these
specifications without prior notice.

4 Technical specifications

Split Type Installation Manual 9EN

5 Temperatures by Capacities

5.1 V 10-025 NW

Cooling Outdoor Temperature Dry

Indoor Conditions 21ºC 25ºC 30ºC 35ºC 40ºC 45ºC 50ºC

21ºC D

15ºC W

Total capacity- kW 2,50 2,48 2,47 2,38 2,27 2,00 1,73

Sensitive capacity- kW 1,88 1,87 1,86 1,79 1,71 1,51 1,31

Input- kW 0,56 0,60 0,65 0,72 0,70 0,67 0,65

24ºC D
17ºC W

Total capacity- kW 2,67 2,66 2,64 2,54 2,42 2,15 1,87

Sensitive capacity- kW 2,01 2,00 1,99 1,91 1,73 1,62 1,41

Input- kW 0,59 0,65 0,71 0,78 0,76 0,73 0,71

27ºC D
19ºC W

Total capacity- kW 2,85 2,83 2,81 2,70 2,58 2,29 2,00

Sensitive capacity- kW 2,15 2,13 2,12 2,03 1,94 1,73 1,51

Input- kW 0,65 0,70 0,76 0,84 0,82 0,79 0,77

32ºC D

23ºC W

Total capacity- kW 3,13 3,12 3,10 2,95 2,82 2,54 2,24

Sensitive capacity- kW 2,36 2,35 2,33 2,22 2,12 1,91 1,69

Input- kW 0,72 0,79 0,85 0,93 0,90 0,89 0,86

Table 5.1.1 Cooling temperarures V 10-025 NW

Heating Outdoor Temperature Dry

Indoor
Conditions

24ºC D
18ºC W

12ºC D
11ºC W

7ºC D

6ºC W

4ºC D
3ºC W

0ºC D

-1ºC W

-5ºC D

-6ºC W

-7C D

-8ºC W

-15ºC D

-16ºC W

15ºC

Capacity- kW 3,99 2,33 2,13 2,79 2,56 2,48 2,44 2,40

Input- kW 0,72 0,75 0,78 0,70 0,67 0,64 0,62 0,57

18ºC

Capacity- kW 3,86 3,06 2,85 2,69 2,48 2,37 2,35 2,27

Input- kW 0,89 0,95 0,97 0,87 0,84 0,80 0,77 0,71

20ºC

Capacity- kW 3,78 3,56 3,35 2,62 2,41 2,29 2,27 2,18

Input- kW 0,85 0,89 0,92 0,82 0,78 0,75 0,73 0,67

22ºC

Capacity- kW 3,71 3,51 3,30 2,57 2,36 2,26 2,23 2,15

Input- kW 0,88 0,93 0,97 0,85 0,82 0,78 0,75 0,70

27ºC

Capacity- kW 3,57 3,36 3,17 2,47 2,24 2,15 2,14 2,06

Input- kW 0,96 1,00 1,04 0,93 0,89 0,85 0,82 0,75

Table 5.1.2 Heating temperarures

V 10-025 NW

Temperature by Capacities 5

Split Type Installation Manual10

5.2 V 10-035 NW

Cooling Outdoor Temperature Dry

Indoor Conditions 21ºC 25ºC 30ºC 35ºC 40ºC 45ºC 50ºC

21ºC D
15ºC W

Total capacity- kW 3,16 3,14 3,13 3,01 2,87 2,53 2,19

Sensitive capacity- kW 2,31 2,30 2,29 2,21 2,10 1,85 1,59

Input- kW 0,72 0,78 0,84 0,94 0,91 0,88 0,84

24ºC D
17ºC W

Total capacity- kW 3,37 3,37 3,34 3,21 3,06 2,72 2,36

Sensitive capacity- kW 2,47 2,47 2,45 2,36 2,24 1,98 1,72

Input- kW 0,77 0,84 0,92 1,02 0,99 0,96 0,92

27ºC D
19ºC W

Total capacity- kW 3,60 3,58 3,55 3,55 3,26 2,90 2,53

Sensitive capacity- kW 2,64 2,63 2,61 2,54 2,39 2,12 1,85

Input- kW 0,84 0,91 0,99 1,10 1,07 1,04 1,00

32ºC D
23ºC W

Total capacity- kW 3,95 3,95 3,91 3,72 3,57 3,21 2,81

Sensitive capacity- kW 2,91 2,91 2,88 2,74 2,62 2,36 2,06

Input- kW 0,94 1,04 1,12 1,23 1,18 1,16 1,13

Table 5.2.1 Cooling temperarures V 10-035 NW

Heating Outdoor Temperature Dry

Indoor
Conditions

24ºC D
18ºC W

12ºC D
11ºC W

7ºC D

6ºC W

4ºC D
3ºC W

0ºC D

-1ºC W

-5ºC D

-6ºC W

-7C D

-8ºC W

-15ºC D

-16ºC W

15ºC

Capacity- kW 4,58 2,60 2,36 3,15 2,89 2,77 2,73 2,68

Input- kW 1,17 1,22 1,27 1,13 1,08 1,03 1,00 0,91

18ºC

Capacity- kW 4,43 3,48 3,23 3,03 2,77 2,65 2,62 2,53

Input- kW 1,07 1,13 1,17 1,03 1,00 0,94 0,91 0,84

20ºC

Capacity- kW 4,33 4,07 3,90 2,95 2,70 2,56 2,53 2,42

Input- kW 1,01 1,07 1,08 0,98 0,93 0,89 0,86 0,79

22ºC

Capacity- kW 4,26 4,01 3,76 2,89 2,64 2,51 2,48 2,39

Input- kW 1,05 1,12 1,16 1,01 0,98 0,93 0,89 0,82

27ºC

Capacity- kW 4,08 3,84 3,60 2,76 2,50 2,39 2,37 2,28

Input- kW 1,15 1,20 1,25 1,12 1,07 1,01 0,98 0,89

Table 5.2.2 Heating temperarure

s V 10-035 NW

5 Temperature by Capacities

Split Type Installation Manual 11EN

6 Wiring Circuit Diagrams

6.1 Wiring Diagrams

Wiring Circuit Diagrams 6

Fig. 6.1.1 Wiring Indoor Diagram

Split Type Installation Manual12

6 Wiring Circuit Diagrams

Fig. 6.1.2 Wiring Outdoor Diagram

Split Type Installation Manual 13EN

6.2 Circuit Diagrams

Wiring Circuit Diagrams 6

Fig. 6.2.1 Circuit Indoor Diagram

Split Type Installation Manual14

6 Wiring Circuit Diagrams

Fig. 6.2.2 Circuit Outdoor Diagram

Split Type Installation Manual 15EN

Wiring Circuit Diagrams 6

Fig. 6.2.3 Circuit Outdoor Module Board

Split Type Installation Manual16

7 Service Diagnosis

7.1 Caution for Diagnosis

The operation lamp flashes when any of the following
errors is detected.

1. When a protection device of the indoor or outdoor

unit is activated or when the thermistor
malfunctions, disabling equipment operation.

2. When a signal transmission error occurs between the

indoor and outdoor units.In either case, conduct the
diagnostic procedure described in the following
pages.

7.2 Problem Symptoms and Measures

Symptom Check Item Details of Measure

None of the units operates

Check the power supply.

Check to make sure that the rated voltage is
supplied.

Check the indoor PCB Check to make sure that the indoor PCB is broken

Operation sometimes stops. Check the power supply.

A power failure of 2 to 10 cycles can stop air condi­tioner operation.

Equipment operates but does
not cool, or does not heat
(only for heat pump)

Check for faulty operation of
the electronic expansion valve.

Set the units to cooling operation, and compare
the temperatures of the liquid side connection
pipes of the connection section among rooms to
check the opening and closing operation of the
electronic expansion valves of the individual units.

Diagnosis by service port
pressure and operating
current.

Check for insufficient gas.

Large operating noise and
vibrations

Check the installation condition.

Check to make sure that the required spaces for
installation (specified in the Technical Guide, etc.)
are provided.

Table 7.1 Problem Symptoms and Measures

7 Service Diagnosis

Split Type Installation Manual 17EN

Code indication

Description

Indoor

Outdoor

(LED1 flash times)

Indoor and Outdoor

E7 15 Communication fault between indoor and outdoor units

Indoor
Malfunction

E1 Room temperature sensor failure
E2 Heat-exchange sensor failure
E4 Indoor EEPROM error

E14 Indoor fan motor malfunction

E9 High work-intense protection

Outdoor
Malfunction

F12 1 Outdoor EEPROM error

F11 2 The protection of IPM

F22 3

Overcurrent protection of AC electricity for the outdoor model

F11 4 Communication fault between the IPM and outdoor PCB

5

Over pressure or Overheat protection for the compressor
F11 6 Power voltage is too high or low
F4 8 Overheat protection for exhaust temperature

9 outdoor fan motor malfunction

F21 10 Frost-removing temperature sensor failure

F6 12 Ambient temperature sensor failure

F25 13 Exhaust temperature sensor failure

18 deviate from the normal for the compressor

F11 19 Loop of the station detect error

--- 24 Overcurrent of the compressor

--- 25

Overcurrent protection for single-phase of the compressor

Service Diagnosis 7

Table 7.2 Problem Symptoms and Measures

7.3 Error Codes and Description indoor display

Split Type Installation Manual18

7.3.1

Thermistor or Related Abnormality (indoor unit)

Indoor Display

E1: Room temperature sensor failure

E2: Heat-exchange sensor failure

Troubleshooting

Caution!

Be sure to turn off power switch before connect
or disconnect connector, or else parts damage
may be occurred.

Fig. 7.1.1 Flow chart.

Thermistor resistance check method

Remove the connector of the thermistor on the PCB, and
measure the resistance of thermistor using tester. The
relationship between normal temperature and resistance
is shown in the value of indoor thermistor.

Fig. 7.1.2 Thermistor.

7 Service Diagnosis

Split Type Installation Manual 19EN

Service Diagnosis 7

7.3.2

Indoor fan motor malfunction

Indoor Display E14

Fig. 7.2 Flow chart.

Split Type Installation Manual20

7.3.3

IPM protection

outdoor display

LED1 flash 2 times,Indoor display F11.

Caution!

Be sure to turn off power switch before connect
or disconnect connector, or else parts damage
may be occurred.

Fig. 7.3 Flow chart.

7 Service Diagnosis

Split Type Installation Manual 21EN

Check the IPM module method:

Disconnect the compressor harness connector from the
outdoor unit PCB.
To disengage the connector, press the protrusion on the
connector.
Then, to measure resistance between P(+) andN(-) and
the U, V and W terminals of the compressor connector
with a multi-tester. Evaluate the measurement results for
a pass/fail judgment

N(-)terminal of tester P+ (for digital tester) P(+) UVW P(-) UVW

P(+)terminal of tester N- (for digital tester) UVW P(+) UVW P(-)

Normal resistance Several k� to several M� (*)

Unacceptable resistance Short (0 �) or open

7.3.4

The IPM and outdoor PCB don’t communicate or
Related Abnormality

outdoor display

LED1 flash 4 times,Indoor display F11.

Service Diagnosis 7

Fig. 7.4 Flow chart.

Split Type Installation Manual22

7 Service Diagnosis

7.3.5 Thermistor or Related Abnormality
(outdoor unit)

Frost-removing temperature sensor failure

Indoor Display F21

outdoor display LED1 flash 10 times

Exhaust temperature sensor failure

Indoor Display F25

outdoor display LED1 flash 13 times

Exhaust temperature sensor failure

Indoor Display F6

outdoor display LED1 flash 12 times

Fig. 7.5 Flow chart.

Split Type Installation Manual 23EN

Service Diagnosis 7

7.3.6

Overheat Protection For Exhaust Temperature

Indoor display

F4

outdoor display

LED1 flash 8 times

Fig. 7.6 Flow chart.

Split Type Installation Manual24

7 Service Diagnosis

7.3.7

The EEPROM Abnormality
(Indoor or outdoor unit)

Indoor Display

E4: �Indoor EEPROM error

F12�Outdoor EEPROM error

Fig. 7.7 Flow chart.

7.3.8

Communication error between the indoor and
outdoor units

Indoor Display

E4: �Indoor EEPROM error

Indoor Display

F12�Outdoor EEPROM error

Split Type Installation Manual 25EN

Service Diagnosis 7

Fig. 7.8 Flow chart.

Split Type Installation Manual26

7.3.9

High work-intense protection

Indoor Display

E9

7 Service Diagnosis

Fig. 7.9 Flow chart.

Split Type Installation Manual 27EN

7.3.10

Power Supply Over or under voltage fault

Indoor Display F19

Outdoor display LED1 flash 6 times

Service Diagnosis 7

About how to check the IPM module,please refer to IPM
protection fault

Fig. 7.10 Flow chart.

Split Type Installation Manual28

7.3.11 Loop of the station detect error

Indoor Display

E9

7 Service Diagnosis





7.3.12 Over-current of the compressor

Outdoor Display

LED1 flash 24 or 25 times

Fig. 7.11 Flow chart.

Fig. 7.12 Flow chart.

Split Type Installation Manual 29EN

Photographs 8

8 Photographs

8.1 Indoor PCB

Fig. 8.1 Indoor PCB picture

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8 Photographs

8.2 Outdoor PCB

Fig. 8.2 Outdoor PCB picture

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Photographs 8

8.3 Inverter Module

Fig. 8.3 Inverter Module picture

Split Type Installation Manual32

8 Photographs

8.4 V 10-025 NW Compressor 8.5 V 10-035 NW Compressor

Fig. 8.4 V 10-025 NW Compressor picture

Fig. 8.5 V 10-035 NW Compressor picture

Split Type Installation Manual 33EN

PCB Explanation 9

9 PCB Explanation

9.1 Functions and Control

9.1.1 Main functions and control specification of
indoor unit

“Setting value” (express in parameter) in this
specification means is a parameter that is stored in
EEPROM. Refer to [EEPROM parameter table].

9.1.2 Temperature Adjusting function

The frequency kept when the frequency rises.

When the operation enters into the work mode, in order
to insure the full oil-returning, some frequency should
be kept for some time.

Indication time

Indication
frequency

Cooling & mois-

ture removing

Heating Frequency kept

60 seconds 60 seconds 58 Hz/88Hz

DASH operation

When the operation starts or the operation mode
changes (except when the compressor is switched on
after being off), the compressor is on and the indicated
maximum frequency should be as follows:

Cooling deviation to zero
Moisture removing deviation to level G
Heating deviation to level F

There will be no DASH operation under trial operation,
emergency operation and silent operation modes.

Temperature adjusting of different levels

(DASH operation conditions under different modes)

Select the wind volume when it is set automatic

When the wind volume is automatic, it can be switched
between strong, medium and weak according to the
temperature adjusting levels. Wind volume under the
automatic wind volume mode.

Temperature adjusting levels

A B C D E F G H I

Heating

Strong Strong Strong Strong Strong

Medium

Weak Weak

SLO

Cooling

Strong Strong Strong

Medium Medium

Weak Weak Weak

Moisture
Removing

Strong

Medium Medium Medium

Weak Weak

SLO SLO

Wind volume limit

When the compressor is working and the max setting for
indoor fan motor is medium or weak, the upper limit of
indicated frequency is as follows:

Frequency control form for wind volume

Limited frequency

variables

Limited

frequency

Medium wind volume FQLIMMD 80Hz

Weak wind volume FQLIMLO 52Hz

Limited frequency for

up/down health wind

FUPHEAL 40Hz

9.1.3 Main functions

Warm boot

When the heat running starts or the frost removing ends
and the compressor starts again, in order to avoid cold
wind, warm boot wind volume control should be done.
Heat exchange temperature

• To control the indoor fan motor as shown in the
table above according to the heat exchange temperature.

• The fan motor stops when the heat exchange tem­perature is below 28 ºC.

• The fan motor is working slightly weak when the
heat exchange temperature is above 28 ºC and below
35 ºC.

• The fan motor is working weak if the he heat
exchange temperature remains 35 ºC for less than 4
minutes.

Split Type Installation Manual34

• The fan motor works as set if the he heat exchange
temperature remains 35 ºC for more than 4 minutes

• The fan motor works as set if the he heat exchange
temperature remains above 38 ºC.

When the compressor stops and remains idle for 3
minutes

20 seconds after the compressor stops, the up wind
volume is weak (switching to SSLO in silent running
mode) and then slightly weak. While the down wind volume
is stoped. If the compressor stops when the heat running
starts, the wind volume is weak.

High Work-intense protection control

Under the heating mode, the high work-intense protection
will be carried out according to the heat-exchange tem­peratures as shown in the table below.

High Work-intense protection control:

9 PCB Explanation

•

High Work-intense protection alarm will start if
there are two times of high work-intense protection
within 30 minutes.

• If the heat-exchange temperature does not reach
THHEAT 2, it will resume to the normal temperature
level control

• The smaller one of the high work-intense frequency
and level frequency will be the operation data.

Low Work-intense protection control

Specification for heat-exchange temperature sensor

B fixed number=3700 R(25�)= 10K�

Under the cooling /moisture removing modes, the low
work-intense protection will be carried out according to
the heat-exchange temperatures as shown in the table
below.

Low Work-intense protection control will be neglected in
the trial running.

Low Work-intense protection control will be cancelled for
3 minutes temporarily after the powerful cooling starts
for 1 minute.

Dehumidification running

Under the dehumidification mode the fan motor stops as
the compressor stops.

The operation is weak after 3 minutes’ idle mode.

After stand by for 3 minutes, the compressor is on.

The compressor operates as the set wind volume when
the wind volume is set to be strong, medium or weak.

The wind volume is decided according to the temperature
adjusting when the wind volume is set to be automatic.

Automatic running

When the operation mode switches to automatic after
the unit is powered on, the system will choose the ope­ration mode according to the difference between the
current set temperature and the room temperature. And
then it will follow the selected mode to operate. The Tr
represents room temperature and Ts represents the set
temperature.

When entering into the automatic mode for the first time,
please select the operation mode with the conditions below.

Split Type Installation Manual 35EN

PCB Explanation 9

The operation mode may switch between the cooling
and heating according to the indoor temperature under
the automatic mode. If the unit is under the cooling
mode currently, when the temperature is enough for the
compressor to stop, the compressor stops. After 15
minutes the compressor will detect the temperature. If
Tr<Ts-3 ºC�,then the unit will start the heating mode,
otherwise it will remain in the cooling mode. If the unit is
under the heating mode currently, when the temperature
is enough for the compressor to stop, the compressor stops.
After 15 minutes the compressor will detect the tempe­rature. If Tr>Ts-3 ºC, then the unit will start the cooling
mode, otherwise it will remain in the heating mode.

There is timing function and sleeping function with this
mode. If the unit is under the cooling mode then it will
start the cooling sleep mode. If the unit is under the
heating mode then it will start the heating sleep mode.

The wind panels may sway or stay at a position. The
wind speed could be low, medium, high or automatic.

9.1.4 Special functions

Powerful running

Powerful running for 15 minutes.

The running stops or ends the powerful running after 15
minutes.

The mode switch ends the powerful running.

Enter into the silent mode, normal running mode or
timed switching on mode to end the powerful running.

When in automatic mode, there are powerful and silent
functions for your choice. When the main unit is in
cooling mode, it operates with powerful cooling or silent
cooling. When the main unit is in heating mode, it
operates with powerful heating or silent heating. When
the main unit is in wind-sending mode, there are no
powerful or silent modes.

There is no powerful mode for wind-sending and
moisture removing.

Powerful heating:

Change the set temperature. With temperature adjusting
function.

The wind volume is the automatic medium.

When in frost removing mode, the outdoor unit does not
accept the communication signal for powerful
running.

After 15 minutes of powerful running, the compressor
can not be off within 10 minutes.

Powerful cooling

Change the set temperature. With temperature adjusting
function.

The wind volume is the automatic strong.

After the compressor starts, there will be no low-intense
running protection within 3 minutes.

Silent running

Send the silent running signal to the outdoor unit.

Under the Silent hearing mode,The wind volume is SSLO
after the compressor is on,The wind volume will be kept
SSLO within 20 seconds after the compressor stops and
then changes to weak.

Under the Silent cooling mode the wind volume is
SSLO.

There is no silent mode for moisture removing and wind­sending.

Air cleaning

If the fan motor starts working after receiving the
remote-control order, the aion generator starts working
and sends out ions.

The ion generator stops as the fan motor stops.

When the ion generator is OFF and the air cleaning
function is on, the fan motor starts running and the ion
generator starts working again.

Timed running

Set the time duration according to the time difference
between the clock for timing and the current clock.

In timing mode, the display panel will flash the light at
fixed times.

Timed OFF

When this function is set, operation
modes on the panel display will not
change. The timing icon will show
and the operation stops when the set
time comes.

Timed ON

When this function is on, the panel
display will only display a question
mark.The unit will operate as the set
mode when the time comes.

Timed ON/OFF

The unit will start operating or stop
according to the order of your setting.

Split Type Installation Manual36

Sleeping function

a. After setting the sleeping function, the refrigerating

mode and dehumidification mode will run as per the
following rules:

9 PCB Explanation

b. After setting the sleeping function, the heating mode

will run as per the following rules:

As shown in the above diagram, after running for 1 hour
under refrigerating mode and dehumidification mode,
the setting temperature will increase 1 ºC; after another
1 hour, it will increase 1 ºC again, and after 6 hours, it will
cease; after running for 1 hour under heating mode, the
setting temperature will decrease 2 ºC, after another 1
hour, it will decrease the 2 ºC again, and after 3 hours, it
will increase 1 ºC, and after other 3 hours, it will cease.

Trial running

The indicated frequency for trial running is 58Hz, wind
volume is strong.

The trial running will last for 30 minutes and then the
unit will be powered off. The unit will exit the
trial running if it receives any remote-control signal
during the trial running period.

There is no low-intense running protection.

Power failure compensation

To enter into the function please press the sleep key 10
times with 4 beeps in 7 seconds.

Under the power failure compensation mode, unplug and
plug again ,the indoor unit will resume original operation.

Under the power failure compensation mode, unplug and
plug again, the unit will be on OFF state.

Mode, Fan speed, Healthy, Set temperature can be
memoried. Swing, Timer, Sleep cannot be memoried.

Press the sleep key for 10 times with 2 beeps in 7
seconds to exit.

Rated Operation

Rated

Cooling:

When receiving the instruction of indoor
unit rated operation, the unit will start
rated cooling operation.

Rated

Heating:

When receiving the instruction of indoor
unit rated operation, the unit will start
rated heating operation.

9.2 Main functions and control specification of
outdoor unit

Sensor Code Definition:

Indoor Ambient

Tao

Outdoor Ambient

Tc1 Indoor Coil,

Td Air Discharge,

Te Outdoor Coil,

Ts Air Intake

9.2.1 Outdoor Unit Operation Frequency and Control

Compressor Operation Frequency Range

Outdoor Temperature

≤ 4 4 ~ 8 ≥ 18
Heating (Hz) 20 ~ 80 20 ~ 80 20 ~ 50
Defrosting (Hz) 88
Outdoor Temperature

≤ 23 23 ~ 32 ≥ 32

Cooling (Hz) 20 ~ 50 20 ~ 80 20 ~ 80

Remark: The most operation frequency of compressor

is 90Hz for 18 unit.

Compressor Startup

Regardless of target frequency of indoor unit, each time
when compressor is from off to on, it must maintain
60Hz,90Hz for one minute (Frequency will be
immediately decreased under the condition that outdoor
unit air discharge temperature overheating protection is
activated or over current of compressor) then the
compressor will operate towards target frequency. This
process does not exist in normal operation of unit.

Heating

When completing compressor startup operation, it will
operate as per frequency of indoor unit.

After 2 minutes, compressor operation frequency will be
compensated as per relevant conditions.

Cooling & Dehumidification

When completing compressor startup operation, it will
operate as per frequency of indoor unit.

After 2 minutes, compressor operation frequency will be
compensated as per relevant conditions.

Split Type Installation Manual 37EN

PCB Explanation 9

Compressor Frequency Increase/Decrease Speed

Rapid Frequency Increase/
Decrease Speed 1

1Hz/s

Slow Frequency Increase/
Decrease Speed 2

1Hz/10s

9.2.2 Outdoor fan control

Compressor startup within 3min ,outdoor fan speed
control as follows:

Outdoor Temperature <10 10~25 ≥ 25
Cooling/Dehumidification

Low Low High

Heating High Low Low

After compressor runs 3min ,outdoor fan speed control
as follows:

Cooling/ Dehumidification:

Compressor Operation

Frequency (Hz)

<25 25~45 ≥ 45

Tao (ºC)

32~38 Low High High

23~32 Low Low High

<23 Low

≥ 38 High

Heating:

Compressor Operation

Frequency (Hz)

<25 25~45 ≥ 45

Tao (ºC)

� 4 Low High High

4~18 Low Low High

≥ 18 Low

Compressor shutdown and outdoor fan residual heat
blow process

When compressor shuts down in cooling mode, outdoor
fan automatically jumps to low speed and blows residual
heat for 30s and stop.

9.2.3 Four-way Valve Control

Defrosting Four-way Valve Control�(please see
defrosting process for details)

Time sequence of the defrosting operation is as follows:

Four-way Valve Work Status in Other Modes:

In heating mode, four-way valve is on. If compressor is
off or is switched to non-heating mode,

four-way valve ensures that it is off at least 2 minutes
after compressor shuts down.

9.2.4 Outdoor Defrosting Control

Defrosting Mode Entry Conditions

The unit will enter defrosting mode when compressor starts
up and operates for 10 minutes continuously in heating mode
or after compressor runs for an accumulated time of 45
minutes. (Upon completion of defrosting or when switched to
cooling mode, compressor accumulated operation time will
be cleared) and when 2 minutes’ continuous checking by
defrosting sensor TE (check frosting condition of outdoor
unit heat exchanger) and outdoor ambient temperature
sensor TA meets the following conditions:

Among

which:

TE�CxTA

_

α

C:TA<0ºC, C=0.8
TA�0ºC, C=0.6

For area prone to frost, the value is set at 6 when unit
leaves the factory.

Defrosting entry temperature control -15 ºC ≤ CxTA

_

α�-5ºC

Defrosting Time Interval

Time interval between two defrosting cycles is 45 minutes.

Defrosting Operation

When defrosting begins, compressor will stop for one
minute, external fan is running and 50s later, four-way
valve will be off.

When compressor starts, external fan will be off,
compressor will run at 60Hz for 60s then move on
to target frequency of 80Hz.

During defrosting, compressor current and air discharge
overheat protection features are effective. During
defrosting, if compressor shuts down due to activation
of protection feature or due to malfunction, it will
resume after 3 minutes. In the unit is still within
defrosting cycle, it will resume defrosting and startup of
compressor will be based on the rule for defrosting
startup. (The unit will exit defrosting mode and handle
fault in the event of 3 consecutive restart failures.)

On entering defrosting, it must guarantee that
compressor will operate for a minimum of 2 minutes
in defrosting mode before exit.

Defrosting Exit Condition

When one of the following conditions is met, defrosting
operation will be switched to heating operation.

1: Temperature of outdoor heat exchanger exceeds 7

ºC for 80s continuously

2: Temperature of outdoor heat exchanger exceeds 12

ºC for 5s continuously

3: Defrosting operation continues for 9 minutes.

Split Type Installation Manual38

9 PCB Explanation

When defrosting exit conditions are met, the unit will
operate as follows

Compressor stops and external fan starts, 50s later,
four-way valve will be on, 60s later, compressor will
operate as per startup process.

9.2.5 PTC Output Control

When outdoor unit is energized, PTC output value is 0,
10s later, output value is 1.

When compressor stops for 10 minutes continuously,
PTC output value is 0.

On receiving compressor startup instruction, initial PTC
output is 1, and compressor startup will be performed 5s
later.

9.2.6 System Protection Function

3 minutes stand-by time

Time interval between compressor shutdown and restart
is set at 3 minutes to ensure that compressor will only
restart after 3-minute shutdown and initial energization
valves are turned on to adequate opening position after
being fully turned off.

TD High Temperature Protections

As long as unit is on, the TD air discharge overheat
protection feature will be activated, yet air discharge sensor
fault must be alarmed 4 minutes after compressor starts.

When TD>117 ºC for 20s continuously air discharge
overheat protection will be activated and fault will be
reported to indoor unit.

It will not continue in other conditions.

Indoor Heat Exchanger Anti-freeze Protection

When TC < 5 ºC compressor frequency will drop at a
speed of 1HZ/10s.

When TC starts to rise and 6 ≤ TC ≤ 7 ºC compressor
frequency will remain unchanged.

When 7 < TC < 11 ºC, frequency will rise at a speed of
1HZ/10s.

If TC ≤ 0 ºC for 2 consecutive minutes, compressor will
shutdown and outdoor fault lamp blinks. Fault will not be
reported to indoor unit.

When compressor shuts down for more than3 minutes
and when TC>7 compressor will restart.

Outdoor Temperature Limit
Cooling:

When outdoor temperature is lower than 23 ºC,
cooling operation will start, compressor fre­quency is limited to less than 50 HZ, outdoor
wind speed is forced at level 1.

Heating:

When outdoor temperature is higher than 18 ºC,
heating operation will start, compressor frequency
is limited to less than 50 HZ, outdoor wind
speed is forced at level 1.

Special Features

1. Forced Cooling: When receiving indoor forced cooling
signal, cooling operation will start in a frequency sig­naled by indoor unit. Only air discharge temperature
and over current protection features are effective
and other protection features are invalid.

2. Rated, Middle and Minimum Capacity Operation:
When receiving indoor, rated, middle and minimum
capacity operation signal, outdoor unit will operate
as per wind speed and frequency set by EEPROM and
all the protection features are effective.

Fault Display and Treatment

In case outdoor unit faults, the alarm indicator lamp will
blink and blink frequency is 1HZ Time interval between
blink cycles is 3s.
Alarm indicator lamp is off when there is no fault.

Split Type Installation Manual 39EN

PCB Explanation 9

9.3 Function of Main Thermistor

Note:
A: Outdoor suction temperaturesensor
B: Exhaust temperature sensor
C: Indoor heat-exchangesensor

Outdoor Suction Temperature Sensor

The outdoor heat exchanger thermistor is used for
controlling target discharge temperature.

The system sets a target discharge temperature
according to the outdoor and indoor heat exchanger
temperature, and controls the electronic expansion valve
opening so that the target discharge temperature can be
obtained.

Exhaust Temperature Sensor

The discharge pipe thermistor is used for controlling
temperature of the discharge pipe.

If the temperature of discharge pipe (used in place of
the inner temperature of the compressor) rises
abnormally, the operating frequency drops or the
operation halts.

Indoor heat-exchange sensor

1. The indoor heat exchanger thermistor is used for

controlling target discharge temperature.

The system sets a target discharge temperature

according to the outdoor and indoor heat exchanger

temperature, and controls the electronic expansion

valve opening so that the target discharge

temperature can be obtained.

2. The indoor heat exchanger thermistor is used for
preventing freezing.During the cooling operation,
if the temperature drops abnormally, the operating
frequency becomes lower, then the operation halts.

3. The indoor heat exchanger thermistor is used for
anti-icing control.During the cooling operation, if the
heat exchanger temperature in the room where
operation is halted becomes -1°C, it is assumed as
icing.

Split Type Installation Manual40

9 PCB Explanation

9.4 Value of Thermistor

9.4.1 Indoor Unit

Split Type Installation Manual 41EN

PCB Explanation 9

Split Type Installation Manual42

9 PCB Explanation

Split Type Installation Manual 43EN

PCB Explanation 9

Split Type Installation Manual44

9 PCB Explanation

Split Type Installation Manual 45EN

PCB Explanation 9

Split Type Installation Manual46

9 PCB Explanation

9.4.2 Outdoor Unit

Split Type Installation Manual 47EN

PCB Explanation 9

Split Type Installation Manual48

9 PCB Explanation

Split Type Installation Manual 49EN

PCB Explanation 9

Split Type Installation Manual50

9 PCB Explanation

Split Type Installation Manual 51EN

PCB Explanation 9

Split Type Installation Manual52

9 PCB Explanation

Split Type Installation Manual 53EN

PCB Explanation 9

Notes

Installations-und Wartungsanleitung Split-Gerät, wandhängend54

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Vaillant si riserva il diritto di apportare modifiche senza preavviso.

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Vaillant se reserva el derecho de introducir modificaciones sin previo aviso.

Vaillant reserves the right to add modifications without prior notice.

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Vaillant önceden uyarı yapmaksızın değişiklik yapma hakkını saklı tutmaktadır.

V10_025-035_NW-TT 01/2009

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