TECHNICAL DATA & SERVICE MANUAL

ARGO HPL/SCL

0.8180.612.01

Pagina 1

06/2012

Table of contents

A SPECIFICATIONS

1) Unit specifications

2) Major Component specifications

B OPERATING RANGE

C DIMENSIONAL DATA

D REFRIGERANT FLOW DIAGRAMS

E FUNCTIONS

1) System operation control

2) Cool Mode Operation

3) Heat Mode Operation

4) Auto Mode Operation

5) Dry Mode Operation

6) Fan Mode Operation

7) Auto Fan Speed

8) Forced Mode

9) Protection operations

10) Defrost

11) I FEEL Function

12) HI POWER mode

13) Heater resistance

14) NIGHT Function

15) LED OFF Function

16) Capacity test mode

17) Diagnostic

18) Address

19) Manual Unit Control and Led Indicators

20) Drain Pump

21) Safety thermostat

F ELECTRIC WIRING DIAGRAMS

G TROUBLESHOOTING

H CHECKING ELECTRICAL COMPONENTS

1) Measurement of Insulation Resistance

2) Checking Continuity of Fuse on PCS Ass'y

3) Checking Motor Capacitor

Page

12

12

14

14

14

14

15

9

9

9

10

11

11

11

15

15

16

17

18

19

19

20

21

6

7

3

4

8

29

29

29

Pagina 2

A

SPECIFICATIONS

1) UNIT SPECIFICATIONS

UNIT MODEL

Power source

PERFORMANCES

Capacity (air conditioner)

Air circulation (high/med/low)

BTU / h

Moisture removal (high speed) Cooling l / h

ELECTRICAL RATINGS

Voltage rating

Available voltage range

Running Ampere (air conditioner)

Power input (air conditioner)

Power factor

C.O.P m

3 kW

/ h

V

V

A

W

FEATURES

Controls / temperature control

Control unit

Timer

Fan speed (air conditioner)

Airflow direction

(Indoor)

Air filter

Horizontal

Vertical

Compressor

Refrig./Stand. Charge at shipmen R410A

Refrigerant control

Power noise level

(Indoor)

Air conditioner Hi/Me/Lo dB(A)

Power noise level

(outdoor)

Air conditioner Hi/Me/Lo dB(A)

Ducts diameter ( 2pcs ) mm

Condensate drain system

DIMENSIONS AND WEIGHT

Height

Widht

Depht

Holes diameter in the wall (2)

Net weight mm mm mm mm kg

ARGO HPL/SCL

220 - 240 V 50 Hz

COOLING

6310

1,85

670-540-130

HEATING

7750

2,27

0,6 ---

220 - 240

198 - 264

3,2

710

0,96

2,61

3,2

715

0,97

3,17

Microprocessor / I.C. Thermostat

Wireless remote control unit

ON / OFF 24 hours and program

3 + Auto

Manual

Auto

Washable, easy access

Rotary (hermetic) DC inverter

650g

Electronic expansion valve

65-62-59

65-63-61

162

By duct

735

839

260-280

162

49

Data can be changed without notice

NOTE

Rating conditions:

Cooling: outside air temp.: 35° C DB, indoor air temp.: 27° C DB, 19° C WB

Heating: outside air temp.: 7° C DB, 6° C WB, indoor air temp.: 20° C DB

Pagina 3

2) MAJOR COMPONENT SPECIFICATIONS

UNIT MODEL

CONTROLLER (PCB)

Part No.

Controls

Control circuit fuse (F1)

SWITCH INDICATOR ASSY

Model

Led color

REMOTE CONTROL UNIT

THERMISTOR (ROOM SENSOR) TH1

Resistance (at 25° C)

THERMISTOR (INDOOR COIL SENSOR) TH2

Resistance (at 25° C) kΩ

THERMISTOR (OUTDOOR AIR SENSOR) TH5

Resistance (at 25° C) kΩ

THERMISTOR (OUTDOOR AIR SENSOR) TH3

Resistance (at 25° C) kΩ

THERMISTOR (COMP. DISCHARGE SENSOR) TH4

Resistance (at 25° C) kΩ kΩ

ARGO HPL/SCL sac dci ODU

Microprocessor

6,3x32 - 12,5A

PCB

384208055

TMR : blu - STB : orange - OPR : green

SAC W-REM

10 ± 3%

NTC (with brass pipe)

10 ± 5%

NTC (with brass pipe)

10 ± 5%

NTC (with brass pipe)

10 ± 5%

10 ± 5%

FAN & FAN MOTOR (FMI)

Model

Number / Diameter / Lenght

No. of pole / rpm (230 V, high) rpm (230 V, high/ medium/ low)

Power input (high)

Power output (high)

Coil resistance (at 25° C) mm

W

W

Ω

Safety device

Setting

Run capacitor (C2)

FAN & FAN MOTOR (FMO)

Model

Number / Diameter / Lenght

No. of pole / rpm (230 V) rpm (230 V high/ medium /low)

Nominal input (high/ medium7 low)

Coil resistance (at 25° C)

Safety device

Setting

Run capacitor (C1)

Open

Close

Open

Close

°C

μF

VAC mm

W

Ω

°C

μF

VAC

UF2Q-21SC5P

Cross-flow 1 / Ø100 / 515

2

2100/ 1760 / 730

68

31

BRN-WHT: 164 ±10%

WHT-VLT: 69 ±10%

VLT-ORG: 33 ±10%

YLW-ORG: 74 ±10%

YLW-PNK: 44 ±10% thermal protector

130 ± 8

79 ± 15

1,5

440

D2E 146 - HS99 - 99

Centrifugal 1 / Ø146 / 140

2

2220/ 1735/ 1345

167/ 118/ 104

BLU-BLK: 69± 5%

GRY-BLK: 34± 5%

WHT-GRY: 12± 5%

BRN-WHT: 30± 5%

(Internal bimetallic type)

150 ± 5K

Autoreset

5

420

Pagina 4

UNIT MODEL ARGO HPL/SCL

COMPRESSOR (CM)

Model

Nominal cooling capacity oil: Freol a68ES-T or SUNICE T-68

Coil resistance (at 20° C)

W cc overload protection thermostat Open

Close

°C

°C

Operating amp. (Ambient temp. 25° C)

Ω

Ω

Ω

PUMP RELAY (RP)

Model

Contact rating

Coil supply

Coil resistance (20 °C)

POWER RELAY (PR)

Model

Contact rating

Coil supply

Coil resistance (20 °C)

AUTOMATIC THERMOSTAT (AT)

Model type / switching point

Contact rating

SAFETY THERMOSTAT (ST)

Model type / switching point

Contact rating

VAC kΩ

VAC

Ω

4-WAY VALVE (20S)

Model

Coil rating

Coil resistance

ELECTRONIC EXPANSION VALVE (EEV)

Model

Coil rating

Coil resistance

ELECTRICAL HEATER (RE)

Model voltage power resistance

SAFETY FLOAT SWITCH (FS)

Model contact rating

EMI FILTER (EF)

Model rating voltage rating current

INDUCTOR

Model

Inductance rating current resistance

V

W

Ω (at 20°C)

V

A (rms) mH

A

Ω (at 20°C)

Rotary ( Hermetic)

UG9A090FUAJP

2770

320

U-V : 2.78

V-W : 2.83

W-U : 2.73

software protection

115°C

-

-

H62S

5A - 230V

230

17,2 ± 10%

OMRON G4F

20 A - 250 V

12

158 ± 10%

IMIT 541873

LS3 / 65°C

15A - 250V

External

IMIT 541741

LS1 / 85°C

16A - 250V

SQ-136 (Coil) SHF-4H-23U (Valve)

AC 220/240 V, 50 Hz, 6W

1440 ± 5%

ZCAM-MD12EX(Coil) ZCAM-BD15EX (Valve)

DC 12 V

46 ± 4%

05050A1

230

800 (+5% -10%)

66 (-5% +10%)

P200AC-001

230 Vac - 0,4 A

10SS4-1BA2-BR-Q2

115/230 Vac , 50/60Hz

10

CBMF374125

1.68 ± 10%

10

0.13 ± 10%

Pagina 5

UNIT MODEL

CONDENSATE PUMP (PC)

Model

Rating

Nominal intput

Coil resistance (at 20° C)

FLAP MOTOR (FLP)

Type

Model

Rating

Coil resistence (Ambient temp. 25°C)

HEAT EXCHANGER COIL (EVAPORATOR)

Coil

Rows

Fin pitch

Face area

HEAT EXCHANGER COIL (CONDENSER)

Coil

Rows

Fin pitch

Face area

THERMOSTATIC VALVE DRAIN PAN

Model

Open

Close

Stroke

ARGO HPL/SCL

Ω mm m

2

291036

220-240VAC~50Hz

5W - 0,05A

778 ± 8%

Ω

Stepping motor

MP24GA1

DC 12V

WHT-BLU (respectively 4 wires) : 380 ± 7%

Aluminium plate fin / copper tube

4

1,3

0,107 mm m

2

°C

°C mm

Aluminium plate fin / copper tube

4

1,3

0,111

DP 25-1101-07 or

DP 25-1107-01

4,4

15,5

5,1

Cooling

Heating

Dry

Temperature

Maximum

Minimum

Maximum

Minimum

Maximum

Minimum

Indoor air intake temp.

32° C DB/ 23° C WB

10° C DB/ 6° C WB

27° C DB indoor room 30% R.H.

32° C BS/ 80% R.H.

10° C BS/ 80% R.H.

Outdoor air intake temp.

43° C DB

-15° C DB

24° C DB / 18° C WB

-15° C DB

43° C DB

-15° C DB

Pagina 6

DIMENSIONAL DATA

Pagina 7

ARGO HPL/SCL

Pagina 8

1 System operation control

The units receives the user input (fan speed, flap position etc) through remote controller

which sends signal every time a button is pressed and in any case, automatically, every 5 minutes.

During operation compressor speed can be subjected to change due to thermal load variations or protection activations but in any case:

• The minimum time interval between an OFF and a ON operation is not lower than 3 minutes

• The minimum operating time is not lower than 3 minutes

• The maximum acceleration/deceleration rate is fixed at 20rpm /sec

• During the start-up compressor speed increases according to a defined rule which is

independent from the thermal load calculation.

2 Cool Mode Operation

In Cooling Mode, the operation of the compressor (CM), Outdoor Fan (FMO) and Indoor Fan (FMI) are determined by:

1) the difference between the room air temperature (RAT) and the set point temperature (SPT)

2) the protection level at which the system is operating

3) the thermal load in the room

NOTES

In addition to the temperature difference of above, the operation of the main components (CM, FMO,

FMI) is also controlled by protection function.

The minimum off time of compressor is 3 minutes.

The indoor fan can change speed only after it has operated at the same speed for 30 sec if in AUTO and 1 sec for the other settings (High, Med, Low).

3 Heat Mode Operation

The Heating mode operation is similar to the Cooling mode operation. The CM, FMO and FMI are controlled by the same parameters.

The FMI will not be turned on until the indoor coil temperature is warm enough to prevent the supply of cold air (see COLD DRAFT PREVENTION feature for details).

The indoor fan can change speed only after it has operated at the same speed for 30 sec if in AUTO and 1 sec for the other settings (High, Med, Low).

Pagina 9

4 Auto Mode Operation

In Auto Mode, the unit switches automatically between the Auto Cooling and Auto Heating in order to maintain the room temperature (RAT) at the prescribed set point (SPT).

The switching between the two modes is according to the above graph and following table

COOLING ---> HEATING

If -3°C ≤ Dt ≤-1°C and the compressor is off for more than 1 hour

If Dt ≤ -3°C and compressor is off for more than 3 minutes

HEATING ---> COOLING

If 1°C ≤ Dt ≤ 3°C and the compressor is off for more than 1 hour

If Dt ≥ 3°C and compressor is off for more than 3 minutes

Dt = RAT - SPT

Refer to the sections 1 COOLING MODE and 2 HEATING MODE for system operation details.

Pagina 10

5 Dry Mode Operation

Dry operation remove moisture from indoor air running, in cooling mode, at a low level without reducing the ambient temperature. This is done cycling ON and OFF the unit according to table below.

ROOM

TEMP

≥ SPT+2°C

DRY LEVEL

LEVEL 0 Operation according to COOLING mode

< SPT+2°C

≥ SPT-1°C

< SPT-1°C

≥ 15°C

< 15°C

LEVEL 1

LEVEL 2

CM on at constant speed

FMO on at constant speed

FMI switches between L and OFF every 30 seconds

RV off

CM switches 9 minutes off and 3 minutes on

FMO switches 9 minutes off and 3 minutes ON

FMI switches between L and OFF every 30 seconds

RV off

CM off

DRY OFF ZONE FMO off

FMI off

RV off

SPT = Set Point Temperature

6 Fan Mode Operation

With this mode, the indoor fan is turned on while CM and FMO stay off all the time. The user can select between 3 speeds: HIGH, MEDIUM and LOW.

7 Auto Fan speed

With this option selected, the indoor fan speed changes automatically according to the compressor speed as shown in the following graphs

In heating, to prevent the supply of cool air, the FMI speed is setted as shown only if the indoor coil temperature ICT ≥ 34°C ( see COLD DRAFT PREVENTION feature for details )

If RAT goes over SET POINT by 1°C or less, for 1 hour, FMI is forced to LOW. If after

1 hour, RAT is still over SPT, FMI and compressor switch off.

Pagina 11

8 Forced Mode

In this mode the system operates (COOLING or HEATING mode – fixed settings) or is switched off by means of the MODE button on the pcb receiver. The operation modes can be selected pressing the button in a cyclic way (OFF  COOL  HEAT  OFF…). The settings are:

COOLING mode

SET POINT temperature = 25°C

FAN SPEED = HIGH

FLAP POSITION = 3

HEATING mode

SET POINT temperature = 21°C

FAN SPEED = HIGH

FLAP POSITION = 4

This special mode is useful if the remote controller is missing or unusable.

When the remote controller operates, the function is automatically set off and the air conditioner follows the remote controller instructions

9 Protection operations

9.1 Freeze-up

This protection prevents ice formation on the indoor coil heat exchanger. The protection is activated as soon as the indoor coil temperature ICT decreases and acts by decreasing the compressor speed

The system exit this protection routine when ICT temperature rises above 5°C.

9.2 Cold draft

This feature prevents the supply of cold air forcing the indoor fan to a speed which cannot be changed by the user.

If the ICT temperature goes down 32°C (in descending) or does not reach 37°C (in rising), the speed fan is set as shown below.

9.3 Overheat internal exchanger

This feature prevents the build up of high pressure in the indoor heat exchanger during heating operation

As soon as the indoor coil temperature (ICT) increases, compressor speed is reduced in order to avoid heat exchanger overheating. System stops compressor operation when ICT reaches 60 °C

Pagina 12

9.4 Overheat outdoor exchanger

During cooling operation as soon as the outdoor coil temperature (OCT) increases, compressor speed is reduced in order to avoid heat exchanger overheating. System stops compressor operation when OCT reaches 65 °C

9.5 Compressor discharge temperature

During operation, as soon as the discharge temperature increases, (CDT) compressor speed is reduced in order to avoid overheating of the motor. Compressor is stopped when CDT reaches 111°C

9.6 Compressor power-module overheating

The module temperature, detected by a built-in thermistor, is always monitored by the control system and kept operating in a safe area. If temperature exceeds 100°C, operation is automatically stopped.

9.7 Compressor power-module overcurrent

Operation is automatically stopped in case of current driven to each motor phase greater than 9A

Pagina 13

10 Defrost

The defrost process is controlled by a detection algorithm designed in order to mantain optimal utilization of the heat pump capacity especially during negative outdoor temperature conditions.

• Compressor speed fixed

• Expansion valve opening fixed

• Outdoor fan switched off

• Indoor fan controlled by cold draft prevention

• Reversing valve switched off (cooling operation)

• Minimum defrost time interval is 6 minutes

• During HIGH POWER operation the defrost detection is ignored until this mode remains active

• System exits defrost protection at least after 6 minutes and only if the temperature of 14°C is reached

on outdoor coil. In any case it exits if at least 12 minutes are elapsed from the start of the defrost cycle.

• After defrost, the compressor starts run after 3 minutes although the fan and the resistance

switch on after 45 seconds.

11 I FEEL function

As standard configuration the air conditioner operates detecting the room temperature through the sensor equipped in the wireless remote controller (icon I FEEL shown on the display). This feature provides a personalised environment since the temperature can be detected where the remote controller is located.

It is possible to de-activate this option pressing the I FEEL button on the remote controller.

In this case the I FEEL icon is no longer displayed and room temperature is detected through the sensor included in the indoor unit.

12 HI POWER mode

When this mode is active the air conditioner operates without any power limitation.

The compressor can use the full range of speed. During this mode, the operation led blinks with a long intermittence.

To reset to normal mode (ECO mode), press three time the HI POWER / NIGHT MODE button on remote controller. After this switch, check that the operation lamp is constantly on.

13 Heater resistance

The unit is equipped with a heater resistance which provide auxiliary power if required.

There are 3 modes for heater operation:

13.1 Automode

The heater resistance switches on only when are satisfied the following condition:

1) unit in automode operation

2) the required thermal load is higher than the maximum power that can be supplied

by the heat pump circuit

3) outdoor air temperature lower than 2°C ( OAT<2°C )

13.2 Auxiliary power in heating

The heater resistance will switch on upon request of the user, in heating mode operation, by pressing the FILTER button on remote controller (icon FILTER shown on the display)

13.3 Fan heater

In fan mode operation, the heater resistance will switch on, upon request of the user, by pressing the FILTER button on remote controller (icon FILTER shown on the display)

In any case, the resistance will be turned off if reached the switching point of thermostats.

Pagina 14

14 NIGHT Function

When this setting is active indoor fan speed is automatically reduced in order to allow low noise operation.Temperature control acts in the same way as NORMAL MODE but after 60 minutes of operation the air conditioner modifies automatically the set-point temperature according to the following:

•COOLING/DRY: +1°C

•HEATING: - 2°C

15 LED OFF function

This is a special function mode which can be selected by the user. With this option active

the OPERATION, TIMER and STANDBY lamps are switched off even during operation

(they activates only in case of diagnostic signaling).

Before setting this mode, ensure that the icon 'FILTER' is not shown on display of remote controller and pressing, at the same for more than 5 seconds the IFEEL and FAN buttons

To reset the normal lamps signaling, press at the same for more than 5 seconds the

IFEEL and FAN buttons

16 Capacity Test mode

This is a special operating mode used when testing the performance of the A/C. In this case the main components of the A/C (compressor , outdoor fan, indoor fan) operate at fixed settings.

This option is activated by setting the remote controller as follows:

-select filter on

-select high power on

-set the mode and temperature based on which kind of test is needed

COOLING MODE: Setpoint = 10°C

HEATING MODE: Setpoint = 32°C

- press at the same time for more than 5 seconds IFEEL and FAN buttons

In cooling capacity test mode the TIMER lamp blinks while the OPERATION lamp is on

In heating capacity test mode the TIMER lamp blinks while the STANDBY lamp is on

To reset the unit to normal mode, just turn off the power supply of the unit for at least 1 minute.

Pagina 15

17 Diagnostic

With this feature is possible to have a visual signal that a trouble is occurring.

This mode is always active and the signalling is made through the display board LEDS .

In case of no troubles the LEDS status follows its normal function.

The detected troubles are showed to the user/technician using the 3 leds of the receiver

For each fault there are different effects upon the operation of the A/C:

NOTES

 The troubles are shown according to a priority list that is, in case of more than one trouble present, is always showed, at first, the one with the highest priority (1  2 3 etc).

 Sensor damaged means a situation where sensor is short-circuited or opened.

 In case of damaged sensors, the system (CM, FMO, FMI etc), if in OFF state, does not start.

Priority FAULT

9 RAT probe damaged

8 OAT probe damaged

7 ICT probe damaged

6 OCT probe damaged

5 CDT probe damaged

4 Compress. overcurrent

3 Compressor overtemp.

2 PFC fault

1 Water level alarm

LD1(tmr) blu

LEDS status

LD2(stby) org

LD3(opr) grn

O

●

F

F

F

F

F

F

O

O

●

F

F

F

O

O

●

●

O

F

O

F

F

●

F

●

O

Effects

System does not operate in cool, dry and heat mode*. As soon as fault is cleared, system automatically restarts after 3 minutes. During this time, the signalling is showed.

See paragraph 20. DRAIN PUMP

O = LED off

F = LED blinking

● = LED on

* If a fault occurred, the unit can operate only in fan and fan heater mode. In these modes,

the fault signalling is suspended.

Pagina 16

18 Address

Changing the Address of the Air Conditioner

In case of more than one air conditioner operating in the same room, it may be necessary to assign an address to each unit in order to avoid operation conflicts. Address is set acting on jumpers located on the unit PCB and on dip-switches of the remote controller. The PCB settings must match the corresponding ones on the wireless remote controller

How to change address of the air conditioner

Dip switch is located on the battery compartment.

1) Pull out the door and remove the batteries.

2) Set the switch SW1, SW2 and jumpers on PCB according to the table below

(do not act on SW3 and SW4)

3) Insert the batteries and pull on the door

As default switches SW1 and SW2 are in off status (remote controller factory state).

UNIT ADDESS

1

2

3

4

JP 1 open open open open

JUMPERS (PCB)

JP2 closed open closed open

JP3 closed closed open open

1 off on off on

DIP SWITCH (REMOCON)

2 off off

3 on on on on on on

As default switches SW1 and SW2 are in off status (PCB factory state).

4 on on on on

Pagina 17

19 Manual Unit Control and LED indicators

The push button switch and the LED indicators on display panel let the user to control the unit operation without a R/C (Remote Controller). Their operations are provided below.

Push Button Switch :

OPERATION

BUTTON

Use to cycle the operation mode of the A/C unit among COOL, HEAT and

OFF modes, without using the R/C.

Every time this switch is pressed, the next operation mode is selected, in order:

- Off => Cool mode => Heat mode => Off => … (for heat pump model)

- The A/C will start in High fan speed.

The temperature setting is 25°C for cooling and 21°C for heating mode.

WARNING: the OFF position does not disconnect the power. Use the main power switch to turn off power completely.

Led indicators :

TIMER LAMP

STANDBY LAMP

1. Lights up during Timer operation.

1. Lights up when the Air conditioner is connected to the power line and

ready to receive the Remote Control command.

2. Blinks in combination with the other lamps in case of faults

(see diagnostic paragraph)

OPERATION LAMP

1. Lights up in Operation mode.

2. Blinks in combination with the other lamps in case of faults

(see diagnostic paragraph)

Pagina 18

20 Drain pump

Pump operates when the unit is running in COOLING and DRY modes. The level detection

is done through a float switch connected at the input FS (closed under normal condition,

and opened when water overflows). System operation is according to the following chart:

21 Safety thermostat

The unit is equipped with a double safety system to prevent overtemperature of the electrical heater

The control of temperature is done throughby

the automatic thermostat (AT) and safety thermostat (ST).

The safety thermostat (ST), if activated, can be reset only manually by pushing the button, placed on the right side of the air inlet, behind the air filter.

Pagina 19

F

ELECTRIC WIRING DIAGRAMS

ARGO HPL/SCL

PCB

FMI

CM

FMO

RE

C1-2

PC

20S

EEV

Controller

Indoor fan motor

Compressor motor

Outdoor fan motor

Electric heater

Capacitor

Condensate pump motor

4-way valve

Expansion valve

LEGENDA

SW-IND-ASSY Indicator assy

TH1-2-3-4-5

ST

Thermistor safety thermostat

AT

EF

FS

FLP

PR

RP automatic thermostat

Emi filter

Float switch

Flap motor power relay pump relay

Pagina 20

G

TROUBLESHOOTING

1 CHECK BEFORE AND AFTER «TROUBLESHOOTING»

(A) Check power supply wiring.

• Check the power supply wires are correctly connected.

(B) Check power supply.

• Check that voltage is in specified range (±10% of the rating).

• Check that power is being supplied.

• WARNING: If the following troubleshooting must be done with power supplied, be careful not to touch any uninsulated live part that can cause electric shock

2 CIRCUIT BREAKER TRIPS OR FUSE BLOWS.

CASE 1

Reset the breaker without changing the unit settings.

What’s happen?

CASE 2

The breaker trips immediatly or resetting is not possible

There is a possibility of groun fault.

Measure insulation resistance. If resistance value is <

1Mohm, insulation is defective

Check insulation of

EMI filter (EF)

The breaker trips after few minutes

Check the following electrical parts: drain pump (PC) electric heater (RE)

Replace faulty component

Pagina 21

3 UNIT DOES NOT RUN.

3.1 - THERE IS NO SIGNALING LED ON UNIT

Check power supply.

Is power being supplied to wall receptacle?

NO

Circuit breaker is tripped

Power failure

Reset the breaker

Wait for recovery or contact power company

YES

Check fuse on pcb. Is the fuse blown?

YES

There is a possibility of short circuit

NO

Check the following electrical parts: compressor fan motors inversion valve coil capacitors

The receiver assy is disconnected or defective

Check EMI filter.

Is it defective?

NO

YES

Change EMI filter (EF)

EMI filter check up pin L-L’: lower than 0.5 ohm pin L-1: lower than 0.3 ohm pin N-N’: lower than 0.5 ohm pin N-2: lower than 0.3 ohm pin L-N: 2.2 Mohm pin L’-N’: 2.2 Mohm

PCB assy is defective

Pagina 22

3 UNIT DOES NOT RUN.

3.2 -THERE IS ONE LED ON AT LEAST AND THE UNIT

DOES NOT RECEIVES THE REMOTE CONTROL SIGNAL

Check the remote controller and

PCB settings for address

Try with another remote controller

Receiver assy may be defective

PCB assy may be defective

Is the set point temperature appropriate

YES

Is the unit in protection mode?

NO

Check unit leds signaling

CASE 1

Normal leds configuration see section 4

3.3 -THERE IS ONE LED ON AT LEAST

AND THE UNIT RECEIVES THE REMOTE CONTROL SIGNAL

NO

Reduce the set point temperature in cooling mode or increase the set point in heating mode

YES

Wait some minutes to restore normal condition

CASE 2

There is a fault signaling see section 6

Pagina 23

3 UNIT DOES NOT RUN.

3.4- THERE IS ONE LED BLINKING AT LEAST

TEMPERATURE

SENSOR DAMAGED

COMPRESSOR

OVERCURRENT/

OVERTEMPERATURE

OR PFC FAULT

WATER LEVEL ALARM

Check sensor connection and measure its resistance

There is a possibility of a short circuit

Drain the water from the service tube

Replace the sensor

Measure the resistance of windings. Is it defective?

YES compressor motor

Replace the compressor

NO

Check compressor wire connection

Is there any signaling of fault yet?

YES

Check connection of float switch

Replace the float switch

Measure the resistance of inductor. Is it defective?

NO

YES

Replace the inductor

PCB assy is defective

NO

Is the condensate drain tube obstructed

YES

NO

Check drain pump (DP) connection

NO

Replace drain pump if defective

Remove the obstruction

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4 UNIT DOES NOT RUN OR RUN FOR FEW MINUTES AND NO FAULT IS DISPLAYED

Before checking the unit with this test, follow these 4 steps

1) Turn off power supply

2) Wait 1 minute until the receiver leds switch off

3) Turn on power supply

4) Wait until the system starts (about 3 minutes)

Pagina 25

5 AIR CONDITIONER OPERATES, BUT ABNORMALITIES ARE OBSERVED.

Is the remote controller directly under the airflow of the unit?

YES

Change the position of the remote controller

NO

Is the unit in ECO mode?

NO

Is the fan motor set in low speed?

YES

Set the unit in HI

POWER mode

YES

Set fan speed in medium or high speed

NO

Check the air filter. Is it clogged?

NO

YES Clean the air filter

Check the expansion valve coil. Is it rightly connected and the resistance value correct?

NO

Replace the expansion valve coil

YES

There is the possibilty of gas shortage

Pagina 26

6 ELECTRICAL HEATER DOES NOT WORK

Before checking the unit with this test, follow these 3 steps

1) Switch the unit in FAN HEATER mode and fan on LOW speed for 3 minutes

2) Measure the power or current consumption directly from the power supply line

Is the consumption much lower than the declared power input of resistance?

YES

Is the room temperature higher than 32°C

NO

YES

Repeat the test with a temperature lower than 32°C

Push reset button of safety thermostat and remeasure the power input. Does the resistance work?

NO

Measure the resistance of the heater. Is it defective?

NO

YES

Check the air filter. Is it clogged?

NO

Check if the airflow is adequate

YES Clean the air filter

Measure resistance of indoor fan motor

(FMI)

YES

Replace the heater resistance Change fan motor

Check continuty of safety thermostat (SF) and automatic thermostat (AT). Is there any defective thermostat?

YES

Replace the faulty thermostat

NO

Check pump relay(RP) and power relay

(PR)

Replace the faulty relay

Pagina 27

7 AIR CONDITIONER OPERATES, BUT ABNORMALITIES ARE OBSERVED.

1 - OPERATION DOES NOT SWITCH FROM HEAT TO COOL AND FROM COOL TO HEAT

Remote controller unit may be defective

Receiver assy may be defective

Check the connection of reversing valve coil

Check resistance of reversing valve coil

8 UNUSUAL NOISE IS OBSERVED

Check that all the panel are fixed.

Check the position of cushion rubbers under the compressor

Check that internal tubes are not touching each other or with other components.

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H

CHECKING ELECTRICAL COMPONENTS

1 Measurement of Insulation Resistance

The insulation is in good condition if the resistance exceeds 1 Mohm a) Power Supply Wires

Clamp the earthed wire of the power supply wires with the lead clip of the insulation resistance tester and measure the resistance by placing a probe on either of the power wires (fig.1).

Then measure the resistance between the earthed wire and the other power wires (fig.1).

b) Unit

Clamp an alluminium plate fin or copper tube with the lead clip of the insulation resistance tester and measure the resistance by placing a probe on

N terminal, and then on Lterminal the terminal plate (fig.2) c) Measurement of Insulation Resistance for Electrical Parts

Disconnect the lead wires of the disired electric part from terminal plate,

PCB assy, capacitor, etc.

Similary disconnect the connector. Then measure the insulation resistance (fig.1 to 4).

Refer to electric wiring diagram.

NOTE

If the probe cannot enter the poles because the hole is too narrow then use a probe with a thinner pin.

2 Checking Continuity of fuse on PCB assy

Remove PCB assy from electrical component box (fig.5)

Then pull out the fuse from PCB assy

Check continuity of fuse by the multimeter (fig.6)

3 Checking Motor Capacitor

Remove the lead wires from the capacitor terminals, and then place a probe on the capacitor terminals as shown in fig.7.

Observe the deflection of the pointer, setting the resistance measuring range of the multimeter to the maximum value.

The capacitor is "good" if the pointer bounces to a great extent and the gradually returns to its original position.

The range of deflection and deflection time deffer according to capacity of the capacitor.

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Via Varese, 90 - 21013 Gallarate - Va - Italy

Tel. +39 0331 755111 - Fax +39 0331 776240 www.argoclima.it

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