Airwell GC 12 DCI Nordic Service manual
Airwell GC 12 DCI Nordic is a wall mounted split system air conditioner with a variety of features to keep you comfortable all year round. With its powerful cooling and heating capabilities, you can enjoy a consistent temperature in your home, even in extreme weather conditions. The GC 12 DCI Nordic is also incredibly efficient, thanks to its inverter technology and R410A refrigerant. This means you can save money on your energy bills while still enjoying a comfortable home environment.
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PNX DCI Nordic
Indoor Units
PNX009 DCI
PNX012 DCI
Outdoor Units
GC 9 DCI Nordic
GC 12 DCI Nordic
REFRIGERANT
R410A
SM PNXDCI 1-A.1 GB
SEPTEMBER – 2009
CONTENTS
HEAT PUMP
LIST OF EFFECTIVE PAGES
LIST OF EFFECTIVE PAGES
Note: Changes in the pages are indicated by a “Revision#” in the footer of each effected page
(when none indicates no changes in the relevant page). All pages in the following list represent effected/ non effected pages divided by chapters.
Dates of issue for original and changed pages are:
Original ....... 0 ........September 2009
Total number of pages in this publication is 50 consisting of the following:
Page
No.
Revision
No. #
Page
No.
Title ....................... 1
A ........................... 1 i ............................. 1
1-1 - 1-3 ................ 1
2-1 - 2-2 ................ 1
3-1 ........................ 1
4-1 ........................ 1
5-1 - 5-10 .............. 1
6-1 - 6-2 ................ 1
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11-1-11-12 ............. 1
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● Zero in this column indicates an original page.
Revision
No. #
Page
No.
Revision
No. #
*Due to constant improvements please note that the data on this service manual can be modified with out notice.
**Photos are not contractual
A
SM PNXDCI 1-A.1 GB
CONTENTS
TABLE OF CONTENTS
Table of Contents
5. PERFORMANCE DATA & PRESSURE CURVES ...............................................5-1
6. SOUND LEVEL CHARACTERISTICS ..................................................................6-1
EXPLODED VIEWS AND SPARE PARTS LISTS .................................................13-1
SM PNXDCI 1-A.1 GB
i
INTRODUCTION
1.
INTRODUCTION
1.1 General
The new PNX DCI INVERTER split wall mounted range has expanded, comprising the following RC (heat pump) models:
● PNX009
● PNX012
The indoor PNX DCI units are available as LED display types, featuring esthetic design, compact dimensions, and low noise operation.
The PNX DCI series benefits from the most advanced technological innovations, namely:
● DC inverter technology.
● R410A.
● High COP.
● Lego concept.
● Pre-Charged units up to the max’ allowing tubing distance.
● Networking system connectivity.
● A dry contact for clock or power shedding functions (configurable).
● Base heater connection.
● Cooling operation at outdoor temperature down to -10°C.
● Heating operation at outdoor temperature down to -15°C.
● Supports Indoor Air Quality features, such as – Ionizer and Active Electrostatic Filter.
● Indoor large diameter cross flow fan, allowing low noise level operation.
● Bended indoor coil with treated aluminum fins and coating for improved efficiency.
● Easy access to the interconnecting tubing and wiring connections, so that removing the front grill or casing is not necessary.
● Refrigerant pipes can be connected to the indoor unit from 5 different optional directions.
● Water condensate tray is equipped with two optional drain connections
● Automatic treated air sweep.
● Low indoor and outdoor noise levels.
● Easy installation and service.
SM PNXDCI 1-A.1 GB
CONTENTS
1-1
INTRODUCTION
The indoor unit is wall mounted, and can be easily fitted to many types of residential and commercials applications.
New design is available in LED version.
Indoor Unit features:
Feature
Display
Ionizer
ESF
Fresh air
Indoor fan motor
Horizontal motorized louver
Vertical motorized louver
Heating element
M2L Cable port
Dry contact
PNX009 PNX012
LED
YES
YES
Optional
Variable speed (PG)
YES
Optional
NO
YES
Presence detector or (jumper selected) power shedding
1.4 Filtration
The PNX DCI INV series presents several types of air filters:
● Easily accessible, and re-usable pre-filters (mesh)
● Pre-charged electrostatic filter (disposable)
● Active carbon filter (disposable)
● ESF. Active Electro Static re-usable filter (optional)
A special design Ionizer protected by unique patents integrated into the indoor unit, generating negative ions to the room providing comfort and upgraded indoor air quality.
1.6 Control
The microprocessor indoor controller, and an infrared remote control, supplied as standard, provides complete operating function and programming.
Remote controllers: RC-2/3/4/5/7, RC-4i-1, RCW, μBMS.
Networking system Airconet version 4.2 and up, MIU SW version H8 and up.
For further details please refer to the Operational Manual.
1-2
CONTENTS
SM PNXDCI 1-A.1 GB
INTRODUCTION
The PNX DCI INV outdoor units can be installed as floor or wall mounted units by using a wall supporting bracket. The metal sheets are protected from corrosion paint work allowing long life resistance. All outdoor units are pre-charged. For further information please refer to the Product Data Sheet, Chapter 2.
● GC 9 DCI Nordic
● GC 12 DCI Nordic
Outdoor Unit Feature
Feature
Display
Base Heater
Outdoor Fan
M2L cable Port
GC 9 DCI Nordic GC 12 DCI Nordic
3 LED’s
Optional
Variable speed DC Inverter
No
Flare type interconnecting tubing to be produced on site.
For further details please refer to the Installation Manual.
1.9 Accessories
Item
MIU (PNX)
RS485 Adapter
Description
MODBUS interface unit
To be used as an interface with RCW or μBMS remote controllers
M2L cable Port
Each unit is supplied with its own installation and operation manuals.
1.11.1 R410A
INDOOR UNITS
OUTDOOR UNITS
MODEL
GC 9 DCI Nordic
GC 12 DCI Nordic
REFR” PNX009 PNX012
√
R410A
√
The above tables lists outdoor units and PNX indoor units which can be matched together.
For further information please refer to the relevant Service Manual.
SM PNXDCI 1-A.1 GB
CONTENTS
1-3
PRODUCT DATA SHEET
2.
2.1
Model
Item
Capacity
PRODUCT DATA SHEET
PNX009 / GC 9 DCI Nordic
Total Input (Cooling / Heating)
E.E.R(Cooling) / C.O.P(Heating)
Running Current(Cooling/Heating)
Starting Current
Power Supply (ph, cy, voltage)
PNX009 DCI / GC 9 DCI Nordic
Cooling Heating
Btu/hr 8530 (3750-122800) 11600 (5290-17060)
Kcal/hr 2150(950-3100) 2920(1330-4300)
W
W
W/W
A
A
2500 (1100-3600)
600 (350-1000)
3400 (1550-5000)
830 (350-1500)
4.10
2.7
4.05
3.7
10.50 single phase 50HZ 220-240V
External finish
Noise level(Lo-Hi)
Pressure (4)
High Polish
Ionizer Yes(Optional)
Electrostatic Filter dB(A) Yes(Optional)
Heat exchanger
Fan (drive)
Hydrophilic louver fin coil
Crossflow * 1
Fan motor output
Airflow (Hi-Me-Lo)
W m 3/hr 530-430-330
20
570-460-350
Operation control type Remote control
26-38 26-39
Condensate drain I.D.
Dimensions W*D*H mm(in) 16(5/8)
810*202*285
Packing dimensions W*D*H
Unit stacking
Refrigerant control
Compressor type
Compressor Model
Starter type
Protection device
Heat exchanger Hydrophilic louver fin
Fan (drive)* No.
Motor output
Defrost method Reverse cycle
Noise level
Pressure (4)
Dimensions W*D*H mm units
W mm
885*285*360
7
Electronic Expansion Valve
Scroll DC Inverter
Matsushita 5CS102XDA04
---
Outdoor SW control
Propeller * 1
50
49 49
795*290*610
Packing dimensions W*D*H mm. 945*395*655
Unit stacking units 3
Refrigerant R410A
Charge(20m connection tube) g 1100
Fresh Air
Tube size O.D. liquid mm(in) suction mm(in) indoor & outdoor
No
6.35
9.53
Flared
Connection method between the indoor and outdoor unit height difference tubing length additonal charge m m
Max. 10m
Max. 20m
No need
(1) Rating conditions in accordance with ISO 5151 and ISO 13253 (for ducted units) and EN 14511.
(2) Airflow in ducted units; at nominal external static pressure.
(3) Sound power in ducted units is measured at air discharge.
(4) Sound pressure level measured at 1 meter distance from unit.
SM PNXDCI 1-A.1 GB
2-1
CONTENTS
PRODUCT DATA SHEET
2.2
Model
Item
PNX012 / GC 12 DCI Nordic
PNX012 DCI / GC 12 DCI Nordic
Cooling Heating
Kcal/hr 3010(950-3700) 3610(1330-4730) Capacity
Total Input (Cooling / Heating)
E.E.R(Cooling) / C.O.P(Heating)
Running Current(Cooling/Heating)
Starting Current
Power Supply (ph, cy, voltage)
W
W/W
A
A
0.97 (350-1400)
3.60
4.3
1140(310-1750)
3.65
5.1
10.50 single phase 50HZ 220-240V
External finish High Polish
Ionizer Yes(Optional)
Electrostatic Filter Yes(Optional)
Heat exchanger
Fan (drive)
Fan motor output
Airflow (Hi-Me-Lo)
Operation control type
Noise level(Lo-Hi)
Condensate drain I.D.
Dimensions W*D*H
W m3/hr
Hydrophilic louver fin coil
Crossflow * 1
550-450-350
20
580-480-370
Remote control
Pressure (4) dB(A)
26-39 26-40
39-52 mm(in) 16(5/8)
810*202*285
Packing dimensions
Unit stacking
Refrigerant control
Compressor type
Compressor Model
W*D*H
Starter type
Protection device
Heat exchanger Hydrophilic louver fin
Fan (drive)* No.
Motor output mm units
885*285*360
7
Electronical Expansion Valve
Scroll DC Inverter
Matsushita 5CS102XDA04
---
Outdoor SW control
W
Propeller * 1
40
Defrost method Reverse cycle
Noise level
Pressure (4) dB(A)
50 50
60
Dimensions W*D*H mm 795*290*610
Packing dimensions W*D*H
Unit stacking units 3
Refrigerant R410A
Charge(20m connection tube)
Fresh Air mm. g
945*395*655
1100
No liquid mm(in) 6.35
Tube size O.D. suction mm(in) 9.53
Connection method between the indoor and outdoor unit additonal charge indoor & outdoor height difference tubing length
Additional charge m m
Flared
Max. 10m
Max. 20m
No need
(1) Rating conditions in accordance with ISO 5151 and ISO 13253 (for ducted units) and EN 14511.
(2) Airflow in ducted units; at nominal external static pressure.
(3) Sound power in ducted units is measured at air discharge.
(4) Sound pressure level measured at 1 meter distance from unit.
2-2
SM PNXDCI 1-A.1 GB
CONTENTS
RATING CONDITIONS
Rating conditions in accordance with ISO 5151 and ISO 13253 (for ducted units).
Cooling:
Indoor: 27 o C DB 19 o C WB
Outdoor: 35 o C DB
Heating:
Indoor: 20 o C DB
Outdoor: 7 o C DB 6 o C WB
3.1.1 R410A
Cooling
Indoor
Upper limit 32 o C DB 23 o C WB
Lower limit 21 o C DB 15 o C WB
Upper limit
Heating
Lower limit
Voltage
27 o C DB
10 o C DB
Outdoor
46 o C DB
-10 o C DB
24 o C DB 18 o C WB
-15 o C DB -16 o C WB
198 – 264 V
SM PNXDCI 1-A.1 GB
CONTENTS
3-1
OUTLINE DIMENSIONS
4.1
Indoor Unit: PNX009 / PNX012 DCI
MOUNTING TEMPLATE
TO BE USED FOR LOCATION
OF INDOOR UNIT ON THE WALL
30.0
810.0
MOUTING PLATE OUTLINE
167.5
167.5
CEELING
8.0
INDOOR UNIT OUTLINE
AIR INTAKE
210
93.0
70.0
TUBING WALL OPENING
(FOR REAR ROUTING)
TUBING WALL OPENING
(FOR REAR LEFT ROUTING)
811
70.0
93.0
4.2
AIR INTAKE
AIR OUTLET
Outdoor Unit: GC 9 DCI Nordic / GC 12 DCI Nordic
SM PNXDCI 1-A.1 GB
CONTENTS
4-1
PERFORMANCE DATA & PRESSURE CURVES
5.1
5.1.1
PNX009 / GC 9 DCI NordicI
Cooling Capacity (kW) - Run Mode
OD COIL
ENTERING AIR DB
TEMPERATURE [ 0 C]
-10 - 20
(protection range)
DATA
ID COIL ENTERING AIR DB/WB TEMPERATURE [ 0 C]
22/15 24/17 27/19 29/21 32/23
25
30
35
40
46
TC
SC
PI
TC
SC
PI
TC
SC
PI
TC
SC
PI
TC
SC
PI
TC
SC
PI
2.46
1.71
0.47
2.34
1.65
0.53
2.21
1.58
0.60
2.08
1.51
0.66
1.93
1.43
0.74
1.60
0.61
2.23
1.54
0.67
2.08
1.46
0.75
80 - 110 % of nominal
2.61
1.74
80 - 105 % of nominal
25 - 50 % of nominal
2.75
1.76
2.90
1.79
0.48
2.48
1.67
0.54
0.49
2.63
1.70
0.55
0.50
2.77
1072
0.57
2.36
2.65
2.50
1.63
0.62
2.37
1.56
0.69
2.22
1.48
0.76
1.66
0.63
2.52
1.59
0.70
2.37
1.51
0.77
3.04
1.81
0.51
2.92
1.75
0.58
2.79
1.68
0.64
2.66
1.61
0.71
2.51
1.53
0.78
LEGEND
TC – Total Cooling Capacity, kW
SC – Sensible Capacity, kW
PI – Power Input, kW
WB – Wet Bulb Temp., ( o C)
DB – Dry Bulb Temp., ( o C)
ID – Indoor
OD – Outdoor
5.1.2 Capacity Correction Factors
Cooling Capacity Ratio Vs. Outdoor Temperature
1.20
1.10
1.00
0.90
0.80
0.70
0.60
0.50
20 25 30 35
Outdoor DB Temperature [ºC]
40 45
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CONTENTS
5-1
PERFORMANCE DATA & PRESSURE CURVES
5.1.3 Heating Capacity (kW) - Run Mode)
ID COIL ENTERING AIR DB TEMPERATURE [ 0 C]
OD COIL ENTERING
AIR DB/WB
TEMPERATURE [ 0 C]
DATA
-15/-16
-10/-12
-7/-8
-1/-2
2/1
7/6
10/9
15/12
15-24
(Protection Range)
TC
PI
TC
PI
TC
PI
TC
PI
TC
PI
TC
PI
TC
PI
TC
PI
TC
PI
15
1.55
0.58
2.04
0.66
2.41
0.71
2.60
0.74
2.72
0.76
3.62
0.79
3.81
0.80
4.00
0.82
20
1.32
0.62
1.82
0.70
2.19
0.75
2.38
0.78
2.50
0.80
3.40
0.83
3.59
0.86
3.78
0.86
85 - 105 % of nominal
80 - 120 % of nominal
25
1.10
0.66
1.60
0.74
1.97
0.80
2.15
0.82
2.28
0.84
3.18
0.87
3.36
0.89
3.55
0.90
LEGEND
TC – Total Heating Capacity, kW
PI – Power Input, kW
WB – Wet Bulb Temp., ( o C)
DB – Dry Bulb Temp., ( o C)
ID – Indoor
OD – Outdoor
5.1.4 Capacity Correction Factors
5-2
1.20
1.10
1.00
0.90
0.80
0.70
0.60
0.50
0.40
-15
Heating Capacity Ratio Vs. Outdoor Temperature
-10 -5 0 5
Outdoor WB Temperature [ºC]
10 15
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CONTENTS
PERFORMANCE DATA & PRESSURE CURVES
5.2 Capacity Correction Factor Due to Tubing Length
5.2.1 Cooling
1.01
1.00
0.99
0.98
0.97
0.96
0.95
0.94
0.93
0.92
0.91
3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
Tubing Length [m]
5.2.2 Heating
1.02
1.00
0.98
0.96
0.94
0.92
0.90
3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
Tubing Length [m]
SM PNXDCI 1-A.1 GB
CONTENTS
5-3
PERFORMANCE DATA & PRESSURE CURVES
5.3
5.3.1
PNX012 / GC 12 DCI Nordic
Cooling Capacity (kW) - Run Mode
OD COIL
ENTERING AIR DB
TEMPERATURE [ 0 C]
-10 - 20
(protection range)
DATA
ID COIL ENTERING AIR DB/WB TEMPERATURE [ 0 C]
22/15 24/17 27/19 29/21 32/23
25
30
35
40
46
SC
PI
TC
SC
PI
TC
SC
PI
SC
PI
TC
SC
TC
SC
PI
TC
PI
TC
2.31
1.00
2.92
2.21
1.11
2.71
2.09
1.24
3.45
2.50
0.79
3.27
2.40
0.90
3.09
3.12
2.25
1.13
2.91
2.13
1.26
80 - 110 % of nominal
80 - 105 % of nominal
3.65
25 - 50 % of nominal
3.85
4.06
2.54
0.80
3.47
2.44
0.91
3.30
2.34
1.02
2.58
0.82
3.68
2.48
0.93
3.50
2.38
1.04
2.61
0.84
3.88
2.51
0.95
3.70
2.42
1.06
3.32
2.28
1.15
3.11
2.17
1.28
3.53
2.32
1.17
3.31
2.20
1.30
2.45
1.08
3.73
2.36
1.18
3.52
2.24
1.32
4.26
2.65
0.66
4.08
2.55
0.97
3.91
LEGEND
TC – Total Cooling Capacity, kW
SC – Sensible Capacity, kW
PI – Power Input, kW
WB – Wet Bulb Temp., ( o C)
DB – Dry Bulb Temp., ( o C)
ID – Indoor
OD – Outdoor
5.3.2 Capacity Correction Factors
1.20
1.10
1.00
0.90
0.80
0.70
0.60
0.50
20
Cooling Capacity Ratio Vs. Outdoor Temperature
25 30 35
Outdoor DB Temperature [ºC]
40 45
5-4
SM PNXDCI 1-A.1 GB
CONTENTS
5.3.3
PERFORMANCE DATA & PRESSURE CURVES
Heating Capacity (kW) - Run Mode
ID COIL ENTERING AIR DB TEMPERATURE [ 0 C]
OD COIL ENTERING
AIR DB/WB
TEMPERATURE [ 0 C]
DATA
-15/-16
-10/-12
-7/-8
-1/-2
2/1
7/6
10/9
15/12
15-24
(Protection Range)
TC
PI
TC
PI
TC
PI
TC
PI
TC
PI
TC
PI
TC
PI
TC
PI
TC
PI
15
4.48
1.08
4.71
1.10
4.94
1.12
1.91
0.80
2.52
0.90
2.98
0.98
3.21
1.02
3.36
1.04
LEGEND
TC – Total Cooling Capacity, kW
SC – Sensible Capacity, kW
PI – Power Input, kW
WB – Wet Bulb Temp., ( o C)
DB – Dry Bulb Temp., ( o C)
ID – Indoor
OD – Outdoor
20
1.64
0.85
2.25
0.96
2.71
1.04
2.94
1.08
3.09
1.10
4.20
1.14
4.43
1.16
4.66
1.18
85 - 105 % of nominal
80 - 120 % of nominal
25
3.92
1.20
4.16
1.22
4.39
1.24
1.36
0.91
1.974
1.02
2.43
1.09
2.66
1.13
2.81
1.16
5.3.4 Capacity Correction Factors
1.20
1.10
1.00
0.90
0.80
0.70
0.60
0.50
0.40
-15
Heating Capacity Ratio Vs. Outdoor Temperature
-10 -5 0 5
Outdoor WB Temperature [ºC]
10 15
SM PNXDCI 1-A.1 GB
5-5
CONTENTS
PERFORMANCE DATA & PRESSURE CURVES
5.4 Capacity Correction Factor Due to TUbing Length
5.4.1 Cooling
1.01
1.00
0.99
0.98
0.97
0.96
0.95
0.94
0.93
0.92
0.91
3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
Tubing Length [m]
5.4.2 Heating
1.02
1.00
0.98
0.96
0.94
0.92
0.90
3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
Tubing Length [m]
5-6
CONTENTS
SM PNXDCI 1-A.1 GB
PERFORMANCE DATA & PRESSURE CURVES
5.5.1. Model: PNX009 / GC 9 DCI Nordic
Cooling - Test Mode
SM PNXDCI 1-A.1 GB
CONTENTS
5-7
PERFORMANCE DATA & PRESSURE CURVES
5.5.2 Cooling - Test Mode
5-8
CONTENTS
SM PNXDCI 1-A.1 GB
PERFORMANCE DATA & PRESSURE CURVES
5.6.1. Model: PNX012 / GC 12 DCI Nordic
Cooling - Test Mode
SM PNXDCI 1-A.1 GB
CONTENTS
5-9
PERFORMANCE DATA & PRESSURE CURVES
5.6.2 Heating - Test Mode
5-10
CONTENTS
SM PNXDCI 1-A.1 GB
6.
6.1
6.2
SOUND LEVEL CHARACTERISTICS
SOUND LEVEL CHARACTERISTICS
Sound Pressure Level
Unit
1m
Wall
0.8m
Mic.
Figure 1
Sound Pressure Level Spectrum
(Measured as Figure 1)
PNX 9 PNX 12
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
Hz, AND CE TER FREQUENC ES
-70NC
-60NC
-50NC
-40NC
-30NC
-20NC
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
Hz, AND CE TER FREQUENC ES
-70NC
-60NC
-50NC
-40NC
-30NC
-20NC
FAN SPEED
HI
ME
LO
LINE
SM PNXDCI 1-A.1 GB
CONTENTS
6-1
SOUND LEVEL CHARACTERISTICS
6.4
Unit
1m
Mic.
Ground
Figure 2
Sound Pressure Level Spectrum
(Measured as Figure 2)
GC 9 DCI Cooling GC 9 DCI Heating
GC 12 DCI Cooling GC 12 DCI Heating
6-2
CONTENTS
SM PNXDCI 1-A.1 GB
ELECTRICAL DATA
7.
7.1
ELECTRICAL DATA
Single Phase Unit
Model
Power Supply
Connected to
Maximum Current
Inrush Current \ (a)
Starting Current\ (b)
Circuit Breaker
Power Supply wiring no. x cross section
Interconnecting cable no. x cross section
PNX009 DCI PNX012 DCI
1 PH ,220-240VAC ,50HZ
To indoor
10A
35A
10A
16A
3 X 1.5 mm²
4 X 1.5 mm²
(a) Inrush current is the current when power is up (charging the DC capacitors at outdoor unit controller).
(b) Starting current is the current at compressor start up.
NOTE
Power wiring cord should comply with local lows and electrical regulations requirements.
SM PNXDCI 1-A.1 GB
CONTENTS
7-1
WIRING DIAGRAMS
8.1 Indoor & Outdoor Units: PNX009, PNX012 / GC 9 DCI Nordic,
GC 12 DCI Nordic
SM PNXDCI 1-A.1 GB
CONTENTS
8-1
REFRIGERATION DIAGRAMS
9.1
9.1.1
Heat Pump Models
PNX009 / GC 9 DCI Nordic, PNX012 / GC 12 DCI Nordic => Cooling Mode
EEV
9.1.2 PNX009 / GC 9 DCI Nordic, PNX012 / GC 12 DCI Nordic => Heating Mode
EEV
SM PNXDCI 1-A.1 GB
CONTENTS
9-1
TUBING CONNECTIONS
TUBE (Inch)
¼” ⅜” ½” ⅝” ¾”
TORQUE (Nm)
Flare Nuts
Valve Cap
11-13 40-45 60-65 70-75 80-85
13-20 13-20 18-25 18-25 40-50
Service Port Cap 11-13 11-13 11-13 11-13 11-13
1. Valve Protection Cap-end
2. Refrigerant Valve Port (use Allen wrench to open/close)
3. Valve Protection Cap
5. Service Port Cap
7. Unit Back Side
When the outdoor unit is installed above the indoor unit an oil trap is required every 5m along the suction line at the lowest point of the riser. Incase the indoor unit is installed above the outdoor, no trap is required.
SM PNXDCI 1-A.1 GB
CONTENTS
10-1
CONTROL SYSTEM
11.1 General Functions and Operating Rules
The DCI software is fully parametric.
All the model dependent parameters are shown in Italic style [ parameter].
The parameters values are given in the last section of this control logic chapter of the service manual.
11.1.1
System Operation Concept
The control function is divided between indoor and outdoor unit controllers. Indoor unit is the System ‘Master’, requesting the outdoor unit for cooling/heating capacity supply. The outdoor unit is the system ‘Slave’ and it must supply the required capacity nless it enters into a protection mode avoiding it from supplying the requested capacity.
The capacity request is transferred via indoor to outdoor communication, and is represented by a parameter called
‘NLOAD’. NLOAD is an integer number with values between 0 and 127, and it represents the heat or cool load felt by the indoor unit.
11.1.2
Compressor Frequency Control
11.1.2.1 NLOAD setting
The NLOAD setting is done by the indoor unit controller, based on a PI control scheme. The actual NLOAD to be sent to the outdoor unit controller is based on the preliminary LOAD calculation, the indoor fan speed, and the power shedding function.
NLOAD limits as a function of indoor fan speed:
Indoor Fan Speed
Low
Medium
High
Turbo
Auto
Maximum NLOAD Cooling
Max NLOADIF1C
Max NLOADIF2C
Max NLOADIF3C
Max NLOADIF4C
Max NLOADIF5C
Maximum NLOAD Heating
127
127
127
127
127
NLOAD limits as a function of power shedding:
Mode
Cool
Heat
Power Shedding OFF
No limit
No limit
Power Shedding ON
Nominal Cooling
Nominal Heating
NLOAD limits as a function of indoor fan speed:
NLOAD
0
0<NLOAD≤MinFreq
>MinFreq
Target Frequency [Hz]
0
MiniFreq
MaxFreq ─ MinFreq
127 ─ MinFreq
Target frequency limits as a function of outdoor air temperature (OAT):
OAT Range
O AT < 6
6 < O AT < 1 5
15 < OAT < 24
24 < OAT
Cool mode limits
MaxFreqAsOATC
No limit
Heat mode limits
No limit
MaxFreqAsOATIH
MaxFreqAsOAT2H
SM PNXDCI 1-A.1 GB 11-1
CONTENTS
CONTROL SYSTEM
11.1.4
Frequency Changes Control
.Frequency change rate is 1 Hz/sec
11.1.5
Compressor Starting Control
Frequency
Step 3
Step 2
Step 1
1
Minute
1
Minute
Time
Min 10 Minutes
11.1.6
3 minutes.
11.1.7
Minimum On and Off Time
Indoor Fan Control
10 Indoor fan speeds are determined for each model. 5 speeds for cool/dry/fan modes and 5 speeds for heat mode.
When user sets the indoor fan speed to a fixed speed (Low/ Medium/ High), unit will operate constantly at set speed.
When Auto Fan is selected, indoor unit controller can operate in all speeds. The actual speed is set according to the cool/ heat load.
The Turbo speed is activated during the first 30 minutes of unit operation when auto fan speed is selected and under the following conditions:
Difference between set point and actual room temperature is bigger then 3 degrees.
Room temperature > 22 for cooling, or < 25 for heating.
11.1.8
Heating Element Control
Heating element can be started if LOAD > 0.8* MaximumNLOAD AND Indoor Coil temperature <45.
The heating element will be stopped when LOAD < 0.5* MaximumNLOAD OR if Indoor Coil Temperature > 50.
11.1.9
Outdoor Fan Control
In cooling mode:
The OFAN speed is controlled according to the following objectives:
Mode
Cool Mode
Ofan Target
Keep the condensation temperature to the minimum possibly value
Implementation
Keep OMT as low as possible down to 27 O C
The target OFAN speed is the sum of open loop value (OLs) and a result of the accumulative correction values (CV).
OFAN
Target
= OFAN
OL
+ ∑OFAN
CV
OFAN Open Loop
During 2 minutes after the compressor start up
Yes, Continuously according to the software timer
OFAN Corrections No
After 2 minutes
No
Yes, every 40 seconds
When OMT or OCT is faulty there will be no OFAN connections, and the OFAN will operate according to the open loop table.
11-2 SM PNXDCI 1-A.1 GB
CONTENTS
CONTROL SYSTEM
The following table describes the open loop of outdoor fan speed, at cool mode, related to outdoor air temperature and the frequency (ROM table):
Freq
0
20
40
60
80
100~
~ - 10 0
0 0
80
Outdoor air temperature (OAT)
10
0
20
0
120 220 460
30 or fauly
0
600
130 210 330 730
250 310 550 730
300 400 730 730
350 490 730 730
730
730
730
730
40
0
50~
0
730 780
780 780
780 780
780 780
780 780
Notes
1.
2.
Linear interpolation will be used for values in between the outdoor temperature and the compressor frequencies.
The speed values, of the above table, are of 10 RPM resolution.
3. OFAN speeds are less than OFMinRPM, OFMinRPM will be used, and the OFMinRPM can’t be set less than 10rpm at lest.
11.1.10 EEV (electronic Expansion valve) Control
EEV opening determination in normal run mode
The Target EEV value is the sum of open loop value (OL) and a result of the accumulative collection values (CV). Tlie EEV collections are calculated every 30 seconds.
EEV = EEV
0L
+ 2 EEV
CP
EEV open loop setting [EEV
0
Lpart)
The EEV initial value (open loop) is determined according to the operation mode, the actual frequency and ODU model.
The values are determined according to the “ EEV
OL
EEV correction setting (EEVcvpart)
Parameters Table ”
EEV cv
is a collection EEV value, it’s calculated as follows:
•
•
EEV cv
After
= 0 during the first 1 minutes after the compressor starts.
The EEV cv
1 minutes are over, the EEV cv
is updated and calculated every 30 seconds.
is based only on discharge super heat correction:
EEV cv
= EEV
SH Discharge
EEV
SH Discharge
is function of *SH
Discharge
* and Der SH
Dischaige
, where:
For COoling. SH
DischargeC
= CTT- OMT
For Heating. SH
Discharge
= CTT- ICT
Der SH
Discharge
: SH
Dlscharge
(current) - SH
Discharge
(previous)
11.1.11 Reversing Valve (RV) Control
Reversing valve is on in heat mode.
Switching of RV state is done only after compressor is off for over 3 minutes.
Ioniser is on when unit is on AND indoor fan is on AND Ionizer power switch (on Ionizer) is on.
11.1.13 Electro Static Filter )ESF( Control
ESF is on when ESF switch is on, Safety switch is pressed, unit is on, AND indoor fan is on.
11.1.14 Base Heater Control
When OAT is connected, Base Heater will be on when unit is in heating and OAT<2 O
When OAT is disconnected, Base Heater will be on when unit is in heating.
C.
In high/ medium/ low indoor fan user setting, unit will operate fan in selected speed.
In AutoFan user setting, fan speed will be adjusting automatically according to the difference between actual room temperature and user set point temperature.
SM PNXDCI 1-A.1 GB 11-3
CONTENTS
CONTROL SYSTEM
NLOAD is calculated according to the difference between actual room temperature and user set point temperature by PI control.
In high / medium / low indoor fan user setting, unit will operate fan in selected speed.
In AutoFan user setting, fan speed will be ad8usted automatically according to the calculated NLOAD.
NLOAD is calculated according to the difference between actual room temperature and user set point temperature by PI control.
In high / medium / low indoor fan user setting, unit will operate fan in selected speed.
In AutoFan user setting, fan speed will be adng to the calculated NLOAD.
In wall mounted models, 3 degrees are reduced from room temperature reading (except when in I-Feel mode), to compensate for temperature difference between high and low areas in the heated room, and for coil heat radiation on room thermistor.
The temperature compensation can be enabled/disabled by shortening of J2 on the indoor unit controller .
Model
Wall Mounted (PNX)
J2 Shorted J2 Opened
Compensation Disable Compensational Enabled
11.4.2 Indoor Fan Control in Heat Mode
Indoor fan speed depends on the indoor coil temperature:
ICTST ICTVL ICTL ICTH ICTT
11.5 Auto Cool/Heat Mode
When in auto cool heat mode unit will automatically select between cool and heat mode according to the difference between actual room temperature and user set point temperature (ΔT).
Unit will switch from cool to heat when compressor is off for 3 minutes, and ΔT < -3.
Unit will switch from heat to cool when compressor is off for 5 minutes, and ΔT < -3.
As long as room temperature is higher then the set point, indoor fan will work in low speed and compressor will work between 0 and MaxNLOADIF1C Hz.
When the room temperature is lower than the set point, compressor will be switched OFF and indoor fan will cycle 3 minutes OFF, 1 minute ON.
11.7 Protections
There are 5 protection codes.
Normal (Norm) – unit operate normally.
Stop Rise (SR) – compressor frequency can not be raised but does not have to be decreased.
HzDown1 (D1) – Compressor frequency is reduced by 2 to 5 Hz per minute.
HzDown2 (D2) – Compressor frequency is reduced by 5 to 10 Hz per minute.
Stop Compressor (SC) – Compressor is stopped.
11-4 SM PNXDCI 1-A.1 GB
CONTENTS
CONTROL SYSTEM
11.7.1
ICT
ICT < -2
-2 ≤ ICT < 0
0 ≤ ICT < 2
2 ≤ ICT < 4
4 ≤ ICT < 6
6 ≤ ICT < 8
8 ≤ ICT
Indoor Coil Defrost Protection
Fast
Increasing
SC
D1
SR
SR
Norm
Norm
ICT Trend
Increasing No change Decreasing
SC
D1
SR
SR
Norm
Norm
SC
D2
D1
SR
SR
Norm
Normal
SC
D2
D2
D1
SR
SR
Fast
Decreasing
SC
D2
D2
D2
D1
SR
1.7.2 Indoor Coil over Heating Protection
ICT
ICT > 55
53 < ICT ≤ 55
49 < ICT ≤ 53
47 < ICT ≤ 49
45 < ICT ≤ 47
43 < ICT ≤ 45
ICT ≤ 43
Fast
Decreasing
SC
D1
SR
SR
Norm
Norm
Decreasing
SC
D1
SR
SR
Norm
Norm
ICT Trend
No Change
SC
D2
D1
SR
SR
Norm
Normal
Increasing
SC
D2
D2
D1
SR
SR
Fast
Increasing
SC
D2
D2
D2
D1
SR
11.7.3 Compressor over Heating Protection
Compressor temperature can be in one of 5 control zones (4 in protection, and 1 normal), according to the following chart.
CTT
Stop-Compresor
CTTOH4
P3
CTTOH3
P2
CTTOH2
CTTOH1
P1
Normal
Control Status
P1
P2
P3
Stop Compressor
Compressor
Temperature Increases
Norm
D1
D2
SC
Else
SR
SR
D1
SM PNXDCI 1-A.1 GB 11-5
CONTENTS
CONTROL SYSTEM
11.7.4 Compressor over Current Protection
CCR
Stop-Compresor
CCROC4
HzDown2
CCROC3
HzDown1
CCROC2
CCROC1
Normal
Stop-Rise
11.7.5
HST
HST > 90
85 < HST ≤ 90
82 < HST ≤ 85
80 < HST ≤ 82
78 < HST ≤ 80
HST ≤ 78
Heat Sink Over Heating Protection (NA for DCI 25 and 35)
Decreasing
SC
D1
SR
SR
Norm
HST Trend
No Change
SC
D2
D1
SR
Norm
Normal
Increasing
SC
D2
D2
D1
SR
11.7.6 Outdoor Coil Deicing Protection
11.7.6.1 Deicing Starting Conditions
Deicing operation will start when either one of the following conditions exist:
• Case 1: OCT < - DST – AND TLD > DI
• Case 2: OCT < OAT – 12 AND TLD > 30 minutes.
• Case 3: OCT < - AND TLD > 75 minutes
• OCT is Invalid AND OCT < 0
• Compressor ON Time > 15 minutes
OCT – Outdoor Coil Temperature
OAT – Outdoor Air Temperature
TLD – Time from Last Deicing
DI – Deicing Interval (Time Interval Between Two Deicing)
DST – Deicing static threshold (Temperature)
Where DST is defined as:
When OAT > 0 or OAT is invalid, then DST = 8
When OAT ≤ 0 then DST = round down (- 0.7*OAT)+8
11-6
CONTENTS
SM PNXDCI 1-A.1 GB
CONTROL SYSTEM
11.7.6.2 Deicing Protection Procedure
OCT
12
0
Threshold
COMP
ON T1
RV
HEAT
COOL
OFAN
ON
OFF
EEVDeicerOpen
EEV
T3 max. 12 minutes
DT
Any
T2
T3
T1 =60 seconds, T2 = 36 seconds, T3 = 6 seconds
11.8 Condensate Water Over Flow Protection
T1
Each of the pins P1, P2, P3 can have two options:
1 – When it is shorted with P4
0 – When it is not shorted to P4
11.8.1 3 Levels Logic (used in floor/ceiling models)
P2
0
1
1
0
P3
0
0
1
1
Level
L0
L1
L2&3
L4
SM PNXDCI 1-A.1 GB
CONTENTS
11-7
CONTROL SYSTEM
Water Level
LEVEL4
LEVEL 3
LEVEL1
Pump
ON
OFF
NLOAD
ANY
0
BLINK
OPER LED
NORMAL
11.8.2 1Level Logic (used in all models except for floor / ceiling models)
P2
Don't care
Don't care
P3
1
0
Level
Normal
Overflow
Water Level
Overflow
Normal
OPER
LED
ON
OFF
BLINK
NLOAD
ANY
0
Overflow when unit is ON
NLOAD is forced to 0
Overflow when unit is OFF
PUMP
ON
OFF
8 min 8 min 8 min
11.9 Indoor Unit Dry Contact
Indoor unit Dry contact has two alternative functions that are selected by J8.
Function Contact = Open Contact = Short
J8 = Open Presence Detector Connection No Limit Forced to STBY
J8 = Open Power Shedding Function No Limit Limit NLOAD
11.10 Operating the Unit from the Mode Button
Forced operation allows to start, stop and operate in Cooling or Heating, in pre-set temperature according to the following table:
Forced operation Mode Pre-set Temperature
Cooling
Heating
20 O C
28 O C
11-8 SM PNXDCI 1-A.1 GB
CONTENTS
CONTROL SYSTEM
11.11 On Unit Controls and Indicators
11.11.1 Indoor Unit Controller Controls and Indicators.
STAND BY INDICATOR
OPERATION INDICATOR
TIMER INDICATOR
FILTER INDICATOR
COOLING INDICATOR
Lights up when the Air Conditioner is connected to power and ready toreceive the R/C commands
Lights up during operation.
Blinks for 300 msec., to announce that a R/C infrared signal has been received and stored.
Blinks continuously during protections (according to the relevant spec section).
Lights up during Timer and Sleep operation.
Lights up when Air Filter needs to be cleaned.
Lights up when system is switched to Cool Mode by using the Mode Switch on the unit.
HEATING INDICATOR Lights up when system is switched Heat Mode by using the Mode Switch on the unit.
Mode SWITCH
(COOL/HEAT/OFF)
RESET / FILTER SWITCH
Every short pressing , the next operation mode is selected, in this order:
SB → Cool Mode → Heat Mode → SB →
In long pressing system enters diagnostic mode.
For short pressing:
When Filter LED is on - turn off the FILTER INDICATOR after a clean filter has been reinstalled.
When Filter LED is off able/disable the buzzer announcer, if selected.
11.11.2 Outdoor Unit Controller Indicators
Unit has three LED
SB LED is ON when power is ON (230 VAC, even when no communication).
STATUS LED is ON when COMP is ON, and Blinks according to diagnostics mode definitions when either fault or protection occurs.
FAULT LED Blinks according to diagnostics mode definitions when either fault or protection occurs.
11.12.1 Indoor Unit Controller
0 = Open Jumper (disconnect jumper).
1 = Close Jumper (connect jumper).
Self test Jumper – J1
OPERATION
SELF-TEST
NORMAL
J1
1
0
Compensation Jumper –J2
Model
Wall Mounted (PNX)
J2 (Default) Compensation
0
Family selection Jumper – J3, J4 and J5
Activated
Family
Reserved
Reserved
Reserved
Wall Mounted (PNX)
J5
0
0
0
0
1
1
J4
0
0
J3
0
1
1
1
SM PNXDCI 1-A.1 GB 11-9
CONTENTS
CONTROL SYSTEM
IDU Model
PNX009
PNX012
J8
0
0
J7
0
1
Jumper Setting
J6 J5
0
0
0
0
J4
1
1
J3
1
1
For wall mounted units Jumper J7, J8 can be configured by service. All other Jumpers on the above table and factory default (cannot be changed by service.
Model selection Jumper – J7, J8
Model
C
D
A
B
J7 J8
0 0
0 1
1 0
1 1
J9 ─ Presence Detector / Power Shedding
OPERATION
Presence Detector
Power Shedding
Jumper ─ J10
J9
0
1
OPERATION
PNX
J1
1
11.12.2 Outdoor Unit Controller
J9 ─ Jumper Layout
Reserved (PIN 9) ODU3 (PIN 7)
GND (PIN 10) GND (PIN 8)
ODU2 (PIN 5)
GND (PIN 6)
ODU Model Selection
ODU1 (PIN 3)
GND (PIN 4)
ODU0 (PIN 1)
GND (PIN 2)
11-10
CONTENTS
SM PNXDCI 1-A.1 GB
CONTROL SYSTEM
11.13.1 Entering Test Mode
System can enter Test mode in two ways:
Automatically when the following conditions exists for 30 minutes continuously:
Mode = Cool, Set point =16, Room temperature = 27±1, Outdoor temperature = 35±1
Or
Mode = Heat, Set point = 30, Room temperature = 20±1, Outdoor temperature = 7±1
Manually when entering diagnostics with the following settings:
Mode = Cool, Set point = 1 6
Mode = Heat, Set point = 30
11.13.2 Unit Operation in Test Mode
In test mode, the unit will operate in fixed settings according to the indoor fan speed setting:
Indoor Fan Speed Setting Unit Setting
Low Minimum Capacity Setting
High
Auto
Nominal Capacity Setting
Maximum Capacity Setting
11.14.1 Indoor Units SW Parameters
General Parameters for All Models:
Parameters defining the indoor fan speed as a function of Indoor Coil temperature in heat mode (ICT):
ICTST Speed
ICTVLSpeed
ICTLSpeed
ICTHSpeed
ICTTSpeed
ICT to stop indoor fan
ICT to go down to very low speed
ICT to start in very low speed
ICT to start in increase speed from very low
ICT to enable Turbo fan speed
25
28
30
32
40
Model Depended Parameters:
Parameter name
Wall Mounted Models
PNX009 PNX012
NLOAD limits as a function of selected indoor fan speed
MaxNLOADIF1C
MaxNLOADIF2C
MaxNLOADIF3C
MaxNLOADIF4C
MaxNLOADIF5C
IFVLOWC
IFLOWC
IFMEDC
IFHIGHC
IFTURBOC
IFVLOWH
IFLOWH
IFMEDH
40
53
120
127
127
Indoor Fan speeds
700
800
900
1050
1150
700
800
950
IFHIGHH
IFTURBOH
1100
1200
NomLoadC
Nominal Compressor Frequency
40
NomLoadH 55
40
53
120
127
127
700
850
950
1100
1200
700
850
1000
1150
1300
62
67
SM PNXDCI 1-A.1 GB 11-11
CONTENTS
CONTROL SYSTEM
11.14.2 Outdoor Units SW Parameters
Parameter Name
MinFreqC
MaxFreqC
MinFreqH
MaxFreqH
Step1Freq
Step2Freq
GC 9 DCI Nordic GC 12 DCI Nordic
Compressor Parameters
20
60
30
78
35
20
80
30
88
35
50 55
Step3Freq 90 90
Frequency limits as a function of outdoor air temperature
MaxFreqAsOATC 40 50
MaxFreqAsOAT1H 65
MaxFreqAsOAT2H
CTTOH1
CTTOH2
CTTOH3
CTTOH4
CCR01
CCR02
CCR03
CCR04
50
Compressor Over Heating Protection
90
95
100
105
Compressor Over Current Protection [A]
7.1
7.5
7.9
8.3
75
60
90
95
100
105
7.1
7.5
7.9
8.3
11-12
CONTENTS
SM PNXDCI 1-A.1 GB
TROUBLESHOOTING
12. TROUBLESHOOTING
12.1 Troubleshooting GC 9 DCI Nordic, GC 12 DCI Nordic
WARNING!!!
When Power Up – the whole outdoor unit controller, including the wiring, is under HIGH
VOLTAGE!!!
Never open the Outdoor unit before turning off the Power!!!
When turned off, the system is still charged (400V)!!!
It takes about 3 Min. to discharge the system.
Touching the controller before discharging may cause an electrical shock!!!
12.1.1 Single Split System failures and Corrective Actions
No
1
2
3
4
5
6
7
8
Symptom
Power supply indicator
(Red LED) does not light up.
Unit does not respond to remote control message
Probable Cause
No power supply
Remote control message not reached the indoor unit
Corrective Action
Check power supply. If power supply is OK, check display and display wiring. if OK, replace controller.
Check remote control batteries, if batteries are OK, check display and display wiring, if OK, replace display PCB.
If still not OK replace controller.
Unit responds to remote control message but
Operate indicator (Green
LED) does not light up
Problem with display
PCB
Replace display PCB.
If still not OK replace controller.
Unit in heat mode and coil is still not warm.
Change to cool mode and check.
Indoor fan does not start
(louvers are opened and
Green LED does light up)
Problem with PCB or capacitor
Change to high speed and Check power supply to motor is higher than 130VAC (for triack controlled motor) or higher than 220VAC for fixed speed motors, if OK replace capacitor, if not OK replace controller.
Indoor fan works when unit is OFF, and indoor fan speed is not changed by remote control command.
Compressor does not start
Compressor stops during operation and Green LED remains on
PCB problem
Electronics control problem or protection
Electronic control or power supply problem
Compressor is on but outdoor fan does not work
Replace controller
Perform diagnostics and follow the actions described.
Perform diagnostics and follow the actions described.
Problem with outdoor electronics or outdoor fan
Check outdoor fan motor according to the procedure below, if not OK replace controller.
SM PNXDCI 1-A.1 GB 12-1
CONTENTS
TROUBLESHOOTING
No
9
10
11
12
13
14
15
16
Symptom Probable Cause
Unit works in wrong mode
(cool instead of heat or heat instead of cool)
Electronics or power connection to RV
Corrective Action
Check RV power connections, if
OK, check RV operation with direct
230VAC power supply, if OK, replace outdoor controller.
All components are operating properly but no cooling or no heating
Compressor is over heated and unit does not generate capacity
Units goes into protections and compressor is stopped with no clear reason
Compressor motor is generating noise and no suction occurs
Water leakage from indoor unit
Freezing of outdoor unit in heat mode and outdoor unit base is blocked with ice
Refrigerant leak
EEV problem
Control problem or refrigeration system problem
Phase order to compressor is wrong
Indoor unit drainage tube is blocked
Unit operates with wrong fan speeds or wrong frequency
Wrong jumper settings
Check refrigeration system.
Check EEV.
Perform diagnostics , and follow the actions described.
Check compressor phase order.
Check and open drainage tube.
Connect base heater.
Perform diagnostics, and check if units is operating by EEPROM parameters.
12.2 Checking the refrigeration system
Checking system pressures and other thermodynamic measures should be done when system is in
Test Mode (in Test mode, system operates in fixed settings). The performance curves given in this manual are given for unit performance in test mode when high indoor fan speed is selected.
Entering test mode:
Set unit to Cool/16 degrees/High indoor fan speed, or Heat/30 degrees/High indoor fan speed, and enter diagnostics.
12-2
CONTENTS
SM PNXDCI 1-A.1 GB
TROUBLESHOOTING
12.3 Judgment by Indoor/Outdoor Unit Diagnostics
Enter diagnostics mode - press for five seconds Mode button in any operation mode. Acknowledgment is by 3 short beeps and lights of COOL and HEAT LED’s. Then, every short pressing of Mode button will scroll between Indoor and Outdoor unit diagnostic modes by the acknowledgment of 3 short beeps and lighting of COOL and HEAT LED’s.
During the Outdoor unit diagnostics all four Indoor LED’s (STBY, Operate, Filter and Timer) are blinking. When Indoor diagnostics is displayed, all four LED’s (STBY, Operate, Filter and Timer) are
ON.
When system enters diagnostics mode, only one fault code is shown. Order of priority is from the lower to the higher number. Diagnostics is continuously ON as long as power is ON. The current system operation mode will not be changed.
If no fault occurred in the system, no fault code will be displayed during normal operation mode. The last fault code will be displayed even if the system has recovered from that fault. The last fault will be deleted from the EEPROM after the system has exit diagnostics mode.
In diagnostics mode, system fault / status will be indicated by blinking of Heat & Cool LEDs.
The coding method will be as follows:
Heat LED will blink 5 times in 5 seconds, and then will be shut off for the next 5 seconds. Cool LED will blink during the same 5 seconds according to the following Indoor / Outdoor unit tables:
Note: 0 – OFF, 1-ON
12.3.1 Indoor Unit Diagnostics
No Problem
1 RT-1 is disconnected
2 RT-1 is shorted
3 RT-2 is disconnected
4 RT-2 is shorted
5 Reserved
7 Communication mismatch
8 No Communication
9 No Encoder
10 Reserved
11 Outdoor Unit Fault
… Reserved
17 Defrost protection
18 Deicing Protection
19 Outdoor Unit Protection
20 Indoor Coil HP Protection
21 Overflow Protection
22 Reserved
24 EEPROM Not Updated
25 Bad EEPROM
26 Bad Communication
27 Using EEPROM data
28 Model A
29 Model B
30 Model C
31 Model D
1
0
1
1
1
0
1
1
0
1
0
2
0
0
0
1
1
1
0
1
1
0
3
0
0
1
1
0
0
0
0
0
1
4
1
1
0
0
1
1
0
0
0
0
5
0
0
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
0
1
1
1
1
0
1
0
0
1
0
0
1
1
0
0
1
1
1
0
0
1
0
0
1
0
1
0
1
0
1
1
0
1
0
1
SM PNXDCI 1-A.1 GB 12-3
CONTENTS
TROUBLESHOOTING
12.3.2 Indoor Unit Diagnostics and Corrective Actions
No.
1
2
3
4
5
6
7
8
9
Fault
Sensor failures of all types
Probable Cause Corrective Action
Check sensor connections or replace sensor
Communication mismatch
No Communication
Indoor and Outdoor controllers are with different versions
Communication or grounding wiring is not good.
Replace Indoor controller
Check Indoor to Outdoor wiring and grounding
No Encoder
Using EEPROM data
Indoor electronics or motor
Outdoor Unit Fault Outdoor controller problem
EEPROM Not
Updated
Bad EEPROM
Bad
Communication
System is using ROM parameters and not
EEPROM parameters
Communication quality is low reliability
No problem. System is using EEPRRRROM parameters
Check motor wiring, if ok, replace motor, if still not ok, replace Indoor controller.
Switch to Outdoor diagnostics.
No action, unless special parameters are required for unit operation.
No action, unless special parameters are required for unit operation.
Check Indoor to Outdoor wiring and grounding
12-4
CONTENTS
SM PNXDCI 1-A.1 GB
TROUBLESHOOTING
12.3.3 Outdoor Unit Diagnosits
No Problem
1 OCT is disconnected
2 OCT is shorted
3 CTT is disconnected
4 CTT is shorted
5 HST is disconnected (when enabled)
6 HST is shorted (when enabled)
7 OAT is disconnected (when enabled)
8 OAT is shorted (when enabled)
9 TSUC is disconnected (when enabled)
10 TSUC is shorted (when enabled)
11 IPM Fault
12 Bad EEPROM
13 DC under voltage
14 DC over voltage
15 AC under voltage
16 Indoor / Outdoor unit Communication mismatch
17 No Communication
18 Reserved
20 Heat sink Over Heating
21 Deicing
22 Compressor Over Heating
23 Compressor Over Current
24 No OFAN Feedback
25 OFAN locked
26 Compressor Lock
27 Bad Communication
30 Outdoor Coil Overheating
31 Operation Condition Is Exceeded
5
1
1
1
1
1
1
1
1
1
1
0
0
1
1
1
0
0
0
0
0
0
0
0
0
0
0
0
0
4
0
1
1
0
0
0
1
1
1
1
1
1
0
0
0
1
1
1
1
1
0
0
1
0
0
0
0
0
3
1
0
0
1
1
1
0
0
1
1
1
1
0
0
0
0
0
0
1
1
1
1
0
0
0
0
1
1
2
1
0
0
0
0
1
1
1
1
1
1
1
0
0
1
0
1
1
0
0
1
1
0
0
1
1
0
0
1 - ON
0 - OFF
Only one code is shown. Order of priority is 1-31. Diagnostics is continuously ON as long power is on.
12.3.4 Outdoor Unit Diagnostics and Corrective Actions
No
1
2
3
Fault
Sensors failures of all types
IPM Fault
Bad EEPROM
Probable Cause
Electronics HW problem
Corrective Action
Check sensors connections or replace sensors.
Check all wiring and jumper settings, if OK, replace electronics.
No action, unless special parameters are required for unit operation.
1
1
0
1
0
1
0
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
SM PNXDCI 1-A.1 GB 12-5
CONTENTS
TROUBLESHOOTING
No
4
5
6
7
8
9
Fault
DC under/over Voltage
AC under Voltage
Indoor / Outdoor unit
Communication mismatch
No Communication
Compressor Lock
Bad Communication
Electronics HW problem
Probable Cause Corrective Action
Check outdoor unit power supply voltage
Check outdoor unit power supply voltage
Indoor and Outdoor controllers are with different versions
Communication or grounding wiring is not good.
Communication quality is low reliability
Replace Indoor controller
Check Indoor to Outdoor wiring and grounding
Switch unit to STBY and restart
Check Indoor to Outdoor wiring and grounding
12.4 Judgment by MegaTool
MegaTool is a special tool to monitor the system states.
Using MegaTool requires:
•
•
•
•
•
•
A computer with RS232C port.
A connection wire for MegaTool.
A special MegaTool software.
Use MegaTool according to following procedure:
Setup MegaTool software: copy the software to the computer.
•
•
Connect RS232C port in computer with MegaTool port in Indoor/Outdoor unit controller by the connection wire.
Run the software and choose the COM port, you can monitor the A/C system state
In monitor tab
12.5 Simple procedures for checking the Main Parts
12.5.1 Checking Mains Voltage.
Confirm that the Mains voltage is between 198 and 264 VAC. If Mains voltage is out of this range, abnormal operation of the system is expected. If in range check the Power (Circuit) Breaker and look for broken or loosed cable lugs or wiring mistake(s).
12.5.2 Checking Power Input.
If Indoor unit power LED is unlighted, power down the system and check the fuse of the Indoor unit.
If the fuse is OK replace the Indoor unit controller. If the fuse has blown, replace the fuse and power up again.
Checking Power Input procedure for the Outdoor unit is the same as with the Indoor unit.
12.5.3 Checking the Outdoor Fan Motor.
Enter Test Mode (where the OFAN speed is high)
Check the voltage between lead wires according to the normal value as following:
Between red wire and black wire: 310VDC +/- 20V
Between orange wire and black wire: 15VDC +/- 1V
Between yellow wire and black wire: 2-6VDC
12-6 SM PNXDCI 1-A.1 GB
CONTENTS
TROUBLESHOOTING
12.5.4 Checking the Compressor.
The compressor is brushless permanence magnetic DC motor. Three coil resistance is same. Check the resistance between three poles. The normal value should be below 0.5 ohm (TBD).
12.5.5 Checking the Reverse Valve (RV).
Running in heating mode, check the voltage between two pins of reverse valve connector, normal voltage is 220VAC.
12.5.6 Checking the electrical expansion valve (EEV).
The EEV has two parts, drive part and valve. The drive part is a step motor; it is ringed on the valve.
Check the drive voltage (12VDC). When Outdoor unit is power on, EEV shall run and have click and vibration.
12.6 Precaution, Advise and Notice Items
12.6.1 High voltage in Outdoor unit controller.
Whole controller, including the wires that are connected to the Outdoor unit controller may have the potential hazard voltage when power is on. Touching the Outdoor unit controller may cause an electrical shock.
Advise: Don’t touch the naked lead wire and don’t insert finger, conductor or anything else into the controller when power is on.
Three large-capacity electrolytic capacitors are used in the Outdoor unit controller. Therefore, charging voltage (380VDC) remains after power down. Discharging takes about four minutes after power is off. Touching the Outdoor unit controller before discharging may cause an electrical shock.
When disassemble the controller or the front panel, turn off the power supply.
When connecting or disconnecting the connectors on the PCB, hold the whole housing, don’t pull the wire.
There are sharp fringes and sting on shell. Use gloves when disassemble the A/C units.
SM PNXDCI 1-A.1 GB
CONTENTS
12-7
EXPLODED VIEWS AND SPARE PARTS LISTS
13. EXPLODED VIEWS AND SPARE PARTS LISTS
13.1 Indoor Unit: PNX009, PNX012 DCI
SM PNXDCI 1-A.1 GB
CONTENTS
13-1
EXPLODED VIEWS AND SPARE PARTS LISTS
13.2 Indoor Unit: PNX009 DCI, PNX012 DCI
No. PN Description
1 465800009
465800016
2 4518655
3 4519132
4
4519744
465720059
5 4526952
6 4526389
7 4518664
Grill A Assy./ LEX7/9/12/14 for Airwell
Grill A Assy./ LEX7/9/12/14 for Electra
Active Carbon Static Fiber filter
Low Temperature Catalyst Fiber Filter
Front Frame Assy./ LEX7/9/12/14
R410A EVAPORATOR ASSY HPI DC WNG9/12
4522754 Draining Aust.)
8 4527434
9 4518638
9 4526953
10 4518640
4518641
11
12
4518662
4518661
13 465700000
14 4518670
15 4518654
Vert. Louver B
Bearing assy fan
Fan assy plastic D91
Rear panel assy
WNG INSTALLATION PLATE
16 4519864R
17 4518650
Motor (LEX DCI25/35 and LEX7/9/12/14 with new function)
18 452969400 Step A
19
452969500
4521158R
4520061R
4520278R
Step Motor B
Power cord cable (Euro.)
Power cord cable(Israel)
Power cord cable(Without plug)
20 4519147
465320006
21 467300079R
22 4518666
Power Cord Clip
Wire Fixing Block
Display Board Assy./ LEX25/35DCI With new function
23 467300067R
24 438082
25 4519813
LEX DCI Indoor Controller With Vertical Louver EHK: 916A512-03
Thermistor Indoor coil BLACK
26 465340012 Terminal
27 4518663 ELECTROSTATIC FLITER WNG-1
28 none
29 453042500
30 4518651
31 none
32 4518682
33 4518646
34 452867800R
35 4518657
36 4518656
37
38
39
40
4519900
467430000
467480001
4526951
465800018 none
Remote controller/RC4-I-1 EHK P/N 974-710-00
Cover Side Motor none
Gear ASSY
Transformer For LEX DCI25/35 (Optional)
IONIZER CABLE A (Optional)
Power Supply Unit /Ionizer(Optional)
Ionizer/WNG NWNG SERIES(Optional)
Ionizer Cover (Optional)
Air Inlet Frame A Assy.
Qty
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
2
1
1
1
2
1
1
1
1
1
1
2
10
1
1
1
1
1
1
1
1
1
1
1
1
1
2
1
1
1
0
1
1
0
1
13-2
SM PNXDCI 1-A.1 GB
CONTENTS
EXPLODED VIEWS AND SPARE PARTS LISTS
13.4 Outdoor Unit: GC 9 DCI Nordic, GC 12 DCI Nordic
SM PNXDCI 1-A.1 GB
CONTENTS
13-3
EXPLODED VIEWS AND SPARE PARTS LISTS
13.5 Outdoor Unit: GC 9 DCI Nordic, GC 12 DCI Nordic
P/N
467400030
467400031
461600048
4522509
4518951
433229
4519606
4519188
464800002
462300055
4519614
4524510
433225
4526298
4519607
433223
453225500
461040000
461050000
467300024R
4526396
433218
4526340
464600009
4526299
4519300
4524177
4526301
204107
452808700
452889600R
433215
4510677
4526221
460150007R
469100006
469120009
469100005
469100007
467300194R
467400027
4526775
No.
58
60
61
41
44
57
36
36
37
38
40
28
29
33
34
35
24
24
25
26
27
22
22
23
24
24
19
20
21
22
22
7
10
11
14
15
16
17
1
2
3
6
Description
Front panel A
Air inlet ring-420
Base Painting Assy.
Partition Plate
Nut for Fan Motor
Gas Valve
Liqiud Valve
Cable clip Nylon
Therminal Plate Assy.
Fan Motor
Motor support
Nut With Flange M8 -D=24 GB6137-S6
Compressor Wire Assy
Compressor Assy.
Compressor Jacket
Compressor Jacket
Compressor Jacket
Compressor Jacket
Controller
Outside air thermistor(OAT)
Compressor top thermistor(CTT)
Outside coil thermistor(OCT)
Outside middle coil thermistor(OIVIT)
4-Way Valve Soldering Assy
4-W Valve coil(RC)
4-W Valve(RC)
Valve Cover
Right side panel (painting plate)
4 poles terminal block
Guard Net Painting Assy.
Condenser Soldering Assy.
Cover panel Painting Assy
TOP PANEL INSULATION 335*270*10
Handle
Bridge
LeftSide Panel Painting Plate
Painting Insulation Plate
Support/OAT Ф7
Electronic Expansion Valve(DPF151-01 R410A)
Electronic Expansion Valve Coil(XQ05-211
Filter Board/901 A108-00
Chock Assy. 167-021-01
Qty.
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
13-4
SM PNXDCI 1-A.1 GB
CONTENTS
APPENDIX A
APPENDIX A
INSTALLATION AND OPERATION MANUALS
► INSTALLATION MANUAL PNX009 / PNX012 DCI
► OPERATING MANUAL PNX009, PNX012 DCI
SM PNXDCI 1-A.1 GB
CONTENTS
14-1

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Key features
- Powerful cooling and heating capabilities
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- Remote control for convenient operation
- Quiet operation for a peaceful home environment