Technibel iSeries Manual

TECHNICAL DATA
& SERVICE MANUAL
OUTDOOR UNIT: GR9FI30LTR5IAA
GR9FI40LTR5IAA
GR9FI50LTR5IAA
SPLIT SYSTEM AIR CONDITIONER
May 2016
iSeries
GR9FI30LTR5IAA
AEI1G 30 LT AEI1G 40-50 LT
GR9FI4-50 0LTR5IAA

TABLE OF CONTENTS
1SCOPE...................................................................................................................................4
2DIMENSIONAL DATA AND EXTERIOR APPEARANCE...........................................5
3TECHNICAL SPECIFICATIONS .....................................................................................7
4REFRIGERANT CIRCUIT ...............................................................................................10
5ELECTRICAL WIRING DIAGRAM ...............................................................................13
PRINCIPLE OF FUNCTIONING...................................................................................15
7COMPONENTS OPERATION.........................................................................................17
8DEFROST............................................................................................................................19
9PROTECTIONS .................................................................................................................21
10 COMPONENT DESCRIPTION .......................................................................................23
11 DIAGNOSTIC TABLE ......................................................................................................26
12 TROUBLESHOOTING......................................................................................................27
13 COMPONENT REPLACEMENT ......................................................................................30
14 PACKAGING......................................................................................................................39
15 LABELS ...............................................................................................................................41

REVISION NOTES
Rev. Date Author Checked Comments
00 01 10 2014
MDG GV First release.
01 14 11 2014
02 20 01 2015
GV MDG Added Scope, Packaging and Labels sections. Added
exterior appearance description. Fixed CDT sensor table.
GV MDG 30-40-50

1Scope
This specification document is applied to the outdoor units mentioned below used for air to air heat
pump to be delivered
UNIT MODEL TABLE
DECLARATION OF CONFORMITY “CE”
Units described in this document conform to the protection requirement of the following EC directives:
•
••
•EMC Directive 2004 108 EC
•
••
•LVD (Low Voltage Directive) 2006 95 EC
•
••
•RoHS 2 Directive 2011 65 EU
Standards:
•EN378-2:2008 + A1:2009
•EN 60335-1:2002+A11:2004+A12:2006+A13:2008+A14:2010
•EN 60335-2-40 :2003+A11:2004+A12:2009+A1:2006
•EN 55014-1:2006 + A1:2009
•EN 55014-2:1997 + A1:2001+ A2:2008
•EN 61000-3-2:2006+A1:2009+A2:2009
•EN 61000-3-3:2008
•EN 61000-3-11:2000
•EN 61000-3-12:2005
CODICE TECHNIBEL
387107115
387107116
387107117
GR9FI30LTR5IAA
GR9FI40LTR5IAA
GR9FI50LTR5IAA

2Dimensional data and exterior appearance
Exterior appearance – color Top front and side rear panel: silver
(F1936)
Fan Guard and valve covering: gray
(RAL7042)
Material Panel: zinc-coated steel sheet
Fan guard and valve covering: polypropylene
Painting 2 layers,
20 µ or more for electro coating (lower layer)
40 µ or more for polyester powder paint coating (top layer)
Total Coating thickness is 60 µ or more.
240 hrs salt spray test
GR9FI30LTR5IAA

Exterior appearance – color Top front and side panel: silver
(F1936)
Fan Guard and valve covering: gray
(RAL7042)
Material Panel: zinc-coated steel sheet
Fan guard and valve covering: polypropylene
Painting 2 layers,
20 µ or more for electro coating (lower layer)
40 µ or more for polyester powder paint coating (top layer)
Total Coating thickness is 60 µ or more.
240 hrs salt spray test
GR9FI40LTR5IAA
GR9FI50LTR5IAA

3Technical specifications
AIR AIR
COOLING Pdesignc W 2680
+35°C SEER 6,11
A++
HEATING Pdesignh W 3030
Average -10°C SCOP 3,82
A
ERP Ecodesign - EN14825
COOLING
Minimum W 1370
+35°C OU 27 19°C IU Maximum W 3650
HEATING
Minimum W 930
+7 6°C OU +20°C IU Maximum W 3880
-7°C -8°C OU + 20° C IU Maximum W 2650
-10°C -11°C OU + 20° C IU Maximum W 2350
-22°C -21°C OU + 20° C IU Maximum W 2150
EN14511
Power supply V Ph Hz 230 1 50
Power input (max.) W A 1550 6,90
R410A standard refrigerant charge kg 0,81
Compressor type Single Rotary
Fan speed Auto
Sound pressure (max.) dB(A) 40
Liquid pipe mm (inch") 6,35 (1 4")
Gas pipe mm (inch") 9,52 (3 8)"
Total lenght of pipes (standard load) m 7,5
Total lenght of pipes (additional load) m 15
Maximum lenght difference (total) m 10
GR9FI30LTR5IAA

AIR AIR
COOLING Pdesignc W 3670
+35°C SEER 6,06
A++
HEATING Pdesignh W 4020
Average -10°C SCOP 4,01
A
ERP Ecodesign - EN14825
COOLING
Minimum W 1010
+35°C OU 27 19°C IU Maximum W 4060
HEATING
Minimum W 910
+7 6°C OU +20°C IU Maximum W 4870
-7°C -8°C OU + 20° C IU Maximum W 3510
-10°C -11°C OU + 20° C IU Maximum W 3250
-22°C -21°C OU + 20° C IU Maximum W 2980
EN14511
Power supply V Ph Hz 230 1 50
Power input (max.) W A 1550 6,90
R410A standard refrigerant charge kg 1,1
Compressor type Single Rotary
Fan speed Auto
Sound pressure (max.) dB(A) 44
Liquid pipe mm (inch") 6,35 (1 4")
Gas pipe mm (inch") 9,52 (3 8)"
Total lenght of pipes (standard load) m 7,5
Total lenght of pipes (additional load) m 15
Maximum lenght difference (total) m 10
GR9FI50LTR5IAA

AIR AIR
COOLING Pdesignc W 5215
+35°C SEER 6,74
A++
HEATING Pdesignh W 4070
Average -10°C SCOP 4,16
A
ERP Ecodesign - EN14825
COOLING
Minimum W 900
+35°C OU 27 19°C IU Maximum W 5650
HEATING
Minimum W 1030
+7 6°C OU +20°C IU Maximum W 5290
-7°C -8°C OU + 20° C IU Maximum W 3900
-10°C -11°C OU + 20° C IU Maximum W 3300
-22°C -21°C OU + 20° C IU Maximum W 3040
EN14511
Power supply V Ph Hz 230 1 50
Power input (max.) W A 1790 7,80
R410A standard refrigerant charge kg 1,3
Compressor type Twin Rotary
Fan speed Auto
Sound pressure (max.) dB(A) 41
Liquid pipe mm (inch") 6,35 (1 4")
Gas pipe mm (inch") 12,77 (1 2)"
Total lenght of pipes (standard load) m 7,5
Total lenght of pipes (additional load) m 20
Maximum lenght difference (total) m 10
GR9FI50LTR5IAA

4Refrigerant circuit
Note:
-In heating mode the refrigerant flow is in the opposite direction of the COOL arrows
-INV: 4-way valve
-EXP: Electronic Expansion Valve
-COM: Compressor
GR9FI30LTR5IAA

Note:
-In heating mode the refrigerant flow is in the opposite direction of the COOL arrows
-INV: 4-way valve
-EXP: Electronic Expansion Valve
-COM: Compressor
GR9FI40LTR5IAA

Note:
-In heating mode the refrigerant flow is in the opposite direction of the COOL arrows
-INV: 4-way valve
-EXP: Electronic Expansion Valve
-COM: Compressor
GR9FI50LTR5IAA

5Electrical wiring diagram
Legend
A1 Control pcb OAT Outdoor Air Sensor
F1 Main fuse
6,3x32 - 10A 250V
CDT Compressor Discharge Sensor
F2 Comm. Fuse, RS485 bus cable
5x20 - 100mA 250V
OCT Outdoor Coil Sensor
SW1 Dip-switch EEV Electronic Expansion Valve
JP1 2 3 Jumpers CCH Crankcase Heater
EF Electromagnetic Interference
Filter
ER Drip tray heater
CM Compressor CWP Condensate water pipe heater
FM Fan motor EI PFC Inductor
INV 4-way valve

Settings
Jumpers
JP1: Factory use. Default: open.
JP2: Defrost type selection. Default: closed.
JP3: Heating only option. Default: open (heating and cooling).
Dip-switch:
SW1: Factory use. Default: 1=Off, 2=Off.
Note:
Jumper and dip-switch settings can be changed only when unit is powered off.

Principle of functioning
Heating mode
When the unit is in heating mode, the system will regulate the heating capacity delivered to the room to
increase the room air temperature (RAT) to the set point (SPT) and to balance the thermal load of the
room to keep the set point temperature.
The following rules apply to heat mode functioning:
-Compressor and fan start when RAT is 1°C or more below the SPT
-Compressor and fan stop if RAT is 2°C or more above the SPT, or if RAT is 1°C above the SPT for
more than 1 hour
During the first 3 minutes of operation:
-Compressor and fan run at a fixed speed (2 minutes at low speed and 1 minute at intermediate
speed)
-EEV is open at a fixed value
After the first 3 minutes of operation, compressor and fan speeds are regulated by:
-the thermal load calculation
-the level of protecion of the system
During heating mode, 4-way valve is active.
Cooling mode
When the unit is in cooling mode, the system will regulate the cooling capacity delivered to the room to
decrease the room air temperature (RAT) to the set point (SPT) and to balance the thermal load of the
room to keep the set point temperature.
The following rules apply to cool mode functioning:
-Compressor and fan start when RAT is 1°C or more above the SPT
-Compressor and fan stop if RAT is 2°C or more below the SPT, or if RAT is 1°C below the SPT for
more than 1 hour
During the first 3 minutes of operation:
-Compressor and fan run at a fixed speed (2 minutes at low speed and 1 minute at intermediate
speed)
-EEV is open at a fixed value
After the first 3 minutes of operation, compressor and fan speeds are regulated by:
-the thermal load calculation
-the level of protecion of the system
During cooling mode, 4-way valve is deactivated.

Dehumidification (dry) mode
When the unit is in dry mode, the system will operate according to the following table:
Notes:
-When dry mode is active, the temperature of the room could decrease below the setpoint
temperature if the thermal load of the room is low.
-During dry mode, 4-way valve is deactivated.
Auto mode
When the unit is in auto mode (auto cooling or auto heating), the system will switch between heating
and cooling mode to maintain the room air temperature (RAT) to the set point temperature (SPT).
The system will switch between heating and cooling mode if one of the following conditions is met:
-Cooling  Heating if at least 3 minutes have passed since the compressor was stopped and ∆T ≤ -3
-Cooling  Heating if at least 1 hour have passed since the compressor was stopped and ∆T ≤ -1
-Heating  Cooling if at least 3 minutes have passed since the compressor was stopped and ∆T ≥ 3
-Heating  Cooling if at least 1 hour have passed since the compressor was stopped and ∆T ≥ 1
where:
-∆T = RAT – SPT
Fan mode
When system is in fan mode:
-Compressor and fan are stopped.
-4-way valve is deactivated
-Indoor fan runs at the selected speed
RAT DRY LEVEL DESCRIPTION
≥ SPT + 2°C 0 Unit operates normally in cooling mode.
< SPT + 2°C
≥ SPT - 1°C 1
Unit operates with a fixed cooling demand.
Indoor fan switches between very low speed and
low speed every 30 seconds.
< SPT - 1°C
≥ 10°C 2
Unit cycles between a period of operation with a
fixed cooling demand (3 minutes) and a period of
non operation (9 minutes).
Indoor fan switches between very low speed and
low speed every 30 seconds.
< 10°C DRY OFF Unit is off.

7Components operation
Compressor
The compressor runs if the following conditions are met:
-At least 3 minutes have passed since the power supply was switched on
-At least 3 minutes have passed since the compressor was stopped
-At least 6 minutes have passed since the previous compressor start
-There is no active alarm on the outdoor and indoor units
-There is no active protection
-There is a thermal load demand in the room
Compressor stops if:
-At least 3 minutes have passed since compressor start
-There is no capacity demand
or if:
-At least 3 minutes have passed since compressor start
-Protection level is too high
or if there is any alarm active.
Fan
The fan runs only when the compressor is running and starts right after the compressor.
The fan can also run without compressor in the following conditions:
-Overheating on the outdoor heat exchanger (cooling or dry mode)
-Overheating on the power electronics
Electronic Expansion Valve (EEV)
EEV is managed based on the system conditions to meet the maximum efficiency point of operation and
to guarantee a safe operation of the system.
Every time power supply is switched on, or once per day if compressor is not running, EEV runs a reset
cycle necessary to find the correct position of the valve. During this reset cycle, EEV is completely closed
and then reopened to a fixed value.
4-way valve
4-way valve is activated when:
-System is in heating mode
4-way valve is deactivated when:
-System is in cooling, dry or fan only mode
-System is off
-Defrost is active

Crankcase heater
Crankcase heater around the compressor is used to prevent refrigerant migration and mixing with
crankcase oil when the unit is off, and to prevent condensation of refrigerant in the crankcase of the
compressor. The crankcase heater keeps refrigerant at a temperature higher than the coldest part of the
system.
Crankcase heater is activated if the following conditions are met:
-Compressor is stopped
-OAT il lower than 5°C
-Difference between CDT and OAT is lower than 18,5°C
When crankcase is active, it will be deactivated if one of the following condition is met:
-Compressor starts
-OAT increases above 5°C
- Difference between CDT and OAT is higher than 21,5°C
Drip tray heater (built-in) and condensation water heater (accessory)
The drip tray heater and the condensation water heater prevent condensation freezing on the drip tray
and the condensation water pipe.
The heaters are activated if the system is in heating mode and one or more of the following conditions
are met:
-OAT is lower than 0°C
-Defrost is active
-Less than 5 minutes have passed since last defrost
When heaters are active, they will be deactivated if all of the following conditions are met:
-OAT is higher than 2°C
-Defrost is not active and more than 5 minutes have passed since last defrost

8Defrost
A defrost starts if one of these conditions is satisfied (see graph below):
- OCT falls below L1 line and compressor is running for at least 35 minutes without defrost
- OCT falls below L2 line and compressor is running for at least 60 minutes without defrost
A defrost ends if one of these conditions is satisfied:
- OCT rise above 14°C and defrost has been active for at least 2 minutes
- defrost has been active for 12 minutes
Removing the jumper JP2, the defrost end contitions will change according to the following:
- OCT rise above 24°C and defrost has been active for at least 5 minutes
- defrost has been active for 15 minutes

Before reversing the cycle at the beginning and at the end of the defrost, the compressor ramps down to
decrease the pressure inside the circuit:
When defrost is active:
-4-way valve is deactivated
-Compressor runs at a fixed speed (if no protection is active)
-EEV is open at a fixed value
-Fan is off
When defrost ends:
-4-way valve is reactiavted
-EEV is opened at a fixed value for 5 minutes