CLIVET WiSAN-YME 1 S 2.1 User manual

Service manual
WiSAN-YME 1 S 2.1-14.1
SM23B087GB-00 06-2023

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3
Summary
1. Power range and furniture................................................................................... 5
1.1 Power........................................................................................................................... 5
1.2 Furniture...................................................................................................................... 5
2. Layout of components .......................................................................................... 6
2.1 Sizes 2.1 - 3.1............................................................................................................... 6
2.2 Sizes 4.1 - 5.1............................................................................................................... 7
2.3 Sizes 6.1T - 7.1T - 8.1T................................................................................................ 8
2.4 Sizes 9.1 - 10.1 - 12.1 - 14.1 .......................................................................................... 9
3. Refrigeration circuit............................................................................................... 10
3.1 Refrigerant circuit diagram..................................................................................... 10
3.2 Heating and Domestic Hot Water operation..................................................... 12
3.3 Cooling and defrosting operation........................................................................ 12
4. Control .................................................................................................................... 13
4.1 Stop .............................................................................................................................. 13
4.2 Standby ....................................................................................................................... 13
4.3 Startup control........................................................................................................... 13
4.4 Startup in heating and domestic hot water mode ........................................... 16
4.5 Startup in cooling mode.......................................................................................... 16
4.6 Normal operation...................................................................................................... 17
4.7 Protection control ..................................................................................................... 19
4.8 Special controls......................................................................................................... 23
5. Layout of electrical panel ..................................................................................... 31
5.1 Sizes 2.1 - 3.1............................................................................................................... 31
5.2 Sizes 4.1 - 5.1............................................................................................................... 31
5.3 Sizes 6.1 - 7.1 - 8.1 ....................................................................................................... 32
5.4 Sizes 6.1T - 7.1T - 8.1T................................................................................................ 32
5.5 Sizes 9.1 - 10.1 - 12.1 - 14.1 .......................................................................................... 33
6. Layout of PCB boards ........................................................................................... 34
6.1 Water circuit board 2.1 - 14.1.................................................................................... 34
6.2 Refrigerant circuit board - 21.- 3.1 - 4.1 - 5.1 ......................................................... 36
6.3 Refrigerant circuit module 6.1 - 7.1 - 8.1 single-phase....................................... 38
6.4 Refrigerant circuit module 6.1T - 7.1T - 8.1T......................................................... 40
6.5 Refrigerant circuit module 9.1 - 10.1 - 12.1 - 14.1 ................................................... 42
6.6 Inverter module - 2.1. - 3.1 ....................................................................................... 44
6.7 Inverter module - 4.1. - 5.1 ....................................................................................... 45
6.8 Inverter module - 6.1. - 7.1 - 8.1 single-phase ...................................................... 46
6.9 Inverter module - 6.1.T - 7.1T - 8.1T......................................................................... 47
6.10 Inverter module - 9.1. - 10.1 - 12.1 - 14.1................................................................... 48
6.11 Filter module 6.1T - 7.1T - 8.1T................................................................................. 49
6.12 Filter module - 9.1. - 10.1 - 12.1 - 14.1........................................................................ 50
6.13 Display......................................................................................................................... 51
6.14 DIP Switch setting..................................................................................................... 51
7. Table of error codes .............................................................................................. 53
8. Troubleshooting..................................................................................................... 55
9. Temperature sensor resistance characteristics ................................................ 114

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POWER RANGE AND FURNITURE
1. Power range and furniture
1.1 Power
1.1.1 Single-phase unit
Size 2.1 3.1 4.1 5.1 6.1 7.1
Capacity Kw 4 6 8 10 12 14
1.1.2 Three-phase unit
Size 6.1 7.1 8.1 9.1 10.1 12.1 14.1
Capacity Kw 12 14 16 18 22 26 30
1.2 Furniture
2.1 - 3.1 4.1 - 8.1 9.1 - 14.1

LAYOUT OF COMPONENTS
6
2. Layout of components
2.1 Sizes 2.1 - 3.1
12
3
4
5
6 7 8 9
10
11
1213
14
15
N° Component
1 Pressure sensor
2 Electronic expansion valve
3 High pressure switch
4 Water flow switch
5 Air relief valve
6 Source exchanger: finned coil
7 Fan
8 4-way valve
9 Main board
10 Water side heat exchanger
11 Water circulator
12 Low pressure switch
13 Compressor inverter
14 Gas-suction separator
15 Water pressure relief valve

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LAYOUT OF COMPONENTS
2.2 Sizes 4.1 - 5.1
12
3
4
5
6
7
8 9 10
11
12
1315
14
N° Component
1Electronic expansion valve
2Water flow switch
3Air relief valve
4Water pressure relief valve
5Pressure sensor
64-way valve
7High pressure switch
8Source exchanger: Finned coil
9Fan motor
10 Main board
11 Water circulator
12 Water side heat exchanger
13 Gas-suction separator
14 Low pressure switch
15 Compressor inverter

LAYOUT OF COMPONENTS
8
2.3 Sizes 6.1T - 7.1T - 8.1T
1
2
3
4
56
7
8
9 10 11
12
13
14
15
N° Component
1High pressure switch
24-way valve
3Pressure sensor
4Electronic expansion valve
5Gas-suction separator
6Water flow switch
7Air relief valve
8Water pressure relief valve
9Source exchanger: Finned coil
10 Fan motor
11 Main board
12 Water circulator
13 Water side heat exchanger
14 Low pressure switch
15 Compressor inverter

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LAYOUT OF COMPONENTS
2.4 Sizes 9.1 - 10.1 - 12.1 - 14.1
13
1
2
3
4
5
6
7
8
9
10
11
12 14
15
16
17
18
19
N° Component
1Main board
24-way valve
3Pressure sensor
4Electronic expansion valve
5High pressure switch
6Low pressure switch
7Water circulator
8Water pressure relief valve
9Pressure gauge
10 Compressor inverter
11 Gas-suction separator
12 Fan motor
13 Source exchanger: Finned coil
14 Liquid receiver
15 Non return valve
16 Air relief valve
17 Water flow switch
18 Water side heat exchanger
19 Expansion vessel

REFRIGERATION CIRCUIT
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3. Refrigeration circuit
3.1 Refrigerant circuit diagram
1 Refrigerant temperature sensor - gas line 13 Electronic expansion valve
2 Refrigerant temperature sensor - liquid line 14 Evaporation (cooling) / condensing (heating) sensor
3 Water outlet temperature sensor 15 Outdoor temperature sensor
4 Water inlet temperature sensor 16 Air side exchanger
5 Automatic vent 17 Capillary
6 Expansion vessel 18 Solenoid valve
7 Flow switch 19 Suction separator
8 Circulator 20 Compressor
9 Y filter 21 Discharge temperature sensor
10 Safety valve 22 HP-pressure switch
11 Water side exchanger 23 LP-pressure switch
12 Filter 24 4-way valve
25 Pressure sensor

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REFRIGERATION CIRCUIT
3.1.1 Main components:
Separator:
separates refrigerant liquid from refrigerant gas to protect compressor from liquid hammering.
Electronic expansion valve (EXV):
controls refrigerant flow and reduces refrigerant pressure.
4-way valve:
controls refrigerant flow direction.
Closed in cooling mode and open in heating mode.
When closed, the air side exchanger functions as a condenser and water side exchanger functions as an evaporator.
When open, the air side exchanger functions as an evaporator and water side exchanger functions as a condenser.
High and low pressure switches:
control refrigerant system pressure.
When refrigerant system pressure rises above the upper limit or falls below the lower limit, the high or low pressure
switches turn o, stopping the compressor
Air purge valve:
Automatically removes air from the water circuit.
Pressure relief valve:
prevents excessive water pressure by opening at 3 bar and discharging the water from the water circuit.
Expansion vessel:
Balances the water system pressure. (Expansion vessel volume: 4.8L)
Water flow switch:
Detects the water flow rate to protect the compressor and water pump if the water flow rate is insucient.
Backup electric heater:
Not provided with the standard version (Provided as an option with direct shipping)
Provides additional heating capacity when the heat pump’s heating capacity is insucient due to low outdoor
temperature.
Also protects external water piping from frost.
Water pump:
circulates water in the water circuit.

REFRIGERATION CIRCUIT
12
3.2 Heating and Domestic Hot Water operation
Red High temperature, high pressure, gas
Green Low temperature, low pressure
Viola High temperature, high pressure, liquid
3.3 Cooling and defrosting operation
Red High temperature, high pressure, gas
Green Low temperature, low pressure
Viola High temperature, high pressure, liquid

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CONTROL
4. Control
4.1 Stop
Shutdown occurs for one of the following reasons:
A Abnormal shutdown: in order to protect the compressors and other components, if an abnormal state occurs
the system stops and an error code is displayed on the PCB digital displays and on the user interface.
B The system stops when the set temperature has been reached.
4.2 Standby
4.2.1 Compressor crankcase heater
The compressor crankcase heater is used to prevent refrigerant from mixing with compressor oil when the compressor
is stopped.
It is controlled according to the outdoor ambient temperature and the compressor on/o status.
When the outdoor ambient temperature is above 8°C or the compressor is in operation, the heater is o.
When the outdoor ambient temperature is at or below 8°C and either the compressor has been stopped for more than
3 hours or the unit has just been switched on (manually or when the power supply has returned following a power
failure), the heater switches on.
4.2.2 Water circulator
There are several cases depending on the type of control set on the unit:
1. Control of system water temperature:
- when the set point is reached, the internal circulator continues to run continuously
2. Control by ambient thermostat:
- when the set point is reached, the internal circulator stops
- when the set point is reached, the internal circulator switches on every 6 hours for 3 minutes
Note: the internal circulator operates continuously during defrosting and antifreeze operations.
4.3 Startup control
4.3.1 Delayed compressor startup
In initial startup control and in re-start control (except in oil return and defrosting operations), compressor activation is
delayed to allow a minimum time to elapse in order to prevent frequent compressor switching on/o and to equalise
the pressure within the refrigerant circuit. The compressor re-start delays for cooling and heating modes are set on the
user interface. Refer to the installation manual: Heating/cooling modes setting.
4.3.2 Compressor startup
In initial startup control and in re-start control, compressor activation is controlled according to outdoor temperature.
Compressor startup follows one of two startup programs until the set rotation speed is reached.

CONTROL
14
4.3.2.1 Sizes 2.1 - 3.1 - 6.1 - 7.1 - 8.1: ambient temperature higher than 3°C
4.3.2.2 Sizes 4.1 - 5.1: ambient temperature higher than 11°C
4.3.2.3 Sizes 2.1 - 3.1: ambient temperature at or lower than 3°C
Sizes 4.1 -5.1: ambient temperature at or lower than 11°C

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CONTROL
4.3.2.4 Sizes 6.1 - 7.1 - 8.1 / 6.1T - 7.1T - 8.1T: ambient temperature or lower than 3°C
4.3.2.5 Sizes 9.1 - 14.1: ambient temperature higher than 8°C
4.3.2.6 Sizes 9.1 - 14.1: ambient temperature at or lower than 8°C

CONTROL
16
4.4 Startup in heating and domestic hot water mode
Component Refer to wiring
diagram Control functions and states
DC inverter compressor COMP Compressor startup program selected according to
ambient temperature1
Fan FAN Fan run at maximum speed2
Electronic expansion valve EXV
Position (steps) from 0 (fully closed) to 480 (fully open),
controlled according to outdoor ambient temperature,
discharge temperature, suction overheating, compressor
speed and refrigerant circuit pressure
4-way valve STF*/STF1** .On
* Single-phase version
** Three-phase version
Notes:
1 Refer to the curves in paragraph 4.3.2
2 Refer to paragraph 4.6.7
4.5 Startup in cooling mode
Component Refer to wiring
diagram Control functions and states
DC inverter compressor COMP Compressor startup program selected according to
ambient temperature1
Fan FAN Fan run at maximum speed2
Electronic expansion valve EXV
Position (steps) from 0 (fully closed) to 480 (fully open),
controlled according to outdoor ambient temperature,
discharge temperature, suction overheating,
compressor speed and refrigerant circuit pressure.
4-way valve STF*/STF1** O
* Single-phase version
** Three-phase version
Notes:
1 Refer to the curves in paragraph 4.3.2
2 Refer to paragraph 4.6.7

17
CONTROL
4.6 Normal operation
4.6.1 Component control in heating and domestic hot water mode
Component Refer to wiring
diagram Control functions and states
DC inverter compressor COMP Controlled according to load requirement from
hydronic system
Fan FAN Controlled according to outdoor heat exchanger
temperature
Electronic expansion valve EXV
Position (steps) from 0 (fully closed) to 480 (fully open),
controlled according to outdoor ambient temperature,
discharge temperature, suction overheating,
compressor speed and refrigerant circuit pressure.
4-way valve STF*/STF1** On
* Single-phase version
** Three-phase version
4.6.2 Component control in cooling mode
Component Refer to wiring
diagram Control functions and states
DC inverter compressor COMP Controlled according to load requirement from
hydronic system
Fan FAN Controlled according to outdoor heat exchanger
temperature
Electronic expansion valve EXV
Position (steps) from 0 (fully closed) to 480 (fully open),
controlled according to outdoor ambient temperature,
discharge temperature, suction overheating,
compressor speed and refrigerant circuit pressure.
4-way valve STF*/STF1** O
* Single-phase version
** Three-phase version
4.6.3 Compressor control
The compressor rotation speed is controlled according to the load requirement.
Before compressor startup, the outdoor unit determines the speed according to outdoor ambient temperature, the set-
point and actual water outlet temperature, as shown in paragraph 4.3.2.
Once the startup program is complete, the compressor runs at the set rotation speed.
During operation, the compressor speed is controlled according to the variation ratio of the water temperature, the
water pressure and the refrigerant temperature.
4.6.4 Compressor control step
The operation speed of six-pole compressors in rotations per second (rps) is one third of the frequency (in Hz) of the
electrical input to the compressor motor.
The frequency of the electrical input to the compressor motors can be altered at a speed of 1Hz per second.
4.6.5 4-way valve control
The four-way valve is used to change the direction of refrigerant flow through the water side heat exchanger in order
to switch between cooling and heating/DHW modes. Refer to paragraphs 3.2 and 3.3.

CONTROL
18
During heating and DHW operations, the four-way valve is on; during cooling and defrosting operations, the four-way
valve is o.
4.6.6 Electronic expansion valve control
The position of the electronic expansion valve (EXV) is controlled in steps from 0 (fully closed) to 480 (fully open).
• At switch-on
The EEV first closes fully, then moves to the standby position.
After a few seconds, the EEV moves to an initial operating position, which is determined according to
outdoor ambient temperature.
After a few minutes, the EEV is controlled according to suction and discharge overheating temperature.
After a few minutes, the EEV is controlled according to overheating and discharge temperature and
compressor speed.
• When the outdoor unit is in standby:
The EEV is in standby
• When the outdoor unit stops:
The EEV first closes fully and then moves to standby.
4.6.7 Outdoor fan control
The outdoor fan speed is controlled as shown in Table
Fan speed index
Fan speed (rpm)
2,1-3.1-4.1-5.1 6.1 - 7.1 8.1 9.1-10.1-12.1-14.1
W1
200 200 200 200 180
W2 250 250 250 280 260
W3 300 300 300 340 320
W4 350 350 350 400 380
W5 400 400 400 460 440
W6 450 450 450 520 500
W7 500 500 500 580 560
W8 530 550 550 640 620
W9 550 580 600 700 680
W10 580 610 650 760 740
W11 600 630 700 820 800
W12 600 650 730 880 860
W13 - - - 900 900
9.1-10.1-12.1-14.1 : left column = Upper fan; right column = lower fan

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CONTROL
4.7 Protection control
4.7.1 High pressure protection control
This control protects the refrigerant circuit from abnormally high pressure and protects the compressor from transient
spikes in pressure.
Normal operation (sizes 2.1 to 8.1)
Pc > 4,3 MPa ↓↑Pc < 3,6 MPa
High pressure protector, error code P1 is displayed
Normal operation (sizes 9.1 to 14.1)
Pc > 4,2 MPa ↓↑Pc < 3,2 MPa
High pressure protector, error code P1 is displayed
Pc: discharge pressure
When the discharge pressure rises above 4.3 MPa the system displays P1 protection and the unit shuts down. When
the discharge pressure drops below 3.6 MPa, the compressor enters re-start control.
4.7.2 Low pressure protection control
This control protects the refrigerant system from abnormally low pressure and protects the compressor from transient
drops in pressure.
Normal operation
Pe < 0,14 MPa ↓↑Pe > 0,30 MPa
Low pressure protection, error code P0 is displayed
Pe: suction pressure
When P0 protection occurs 3 times in 60 minutes, the HP error is displayed.
When an HP error occurs, a manual system restart is required before the system can resume operation.
When the suction pressure drops below 0.14 MPa, the system displays P0 protection and the unit shuts down.
When the suction pressure rises above 0.3 MPa, the compressor enters re-start control.

CONTROL
20
4.7.3 High discharge temperature protection control
This control protects the compressor from abnormally high temperatures and transient spikes in temperature.
Normal operation (sizes 2.1 to 8.1)
Discharge temperature > 115°C ↓↑Discharge temperature < 95°C
High discharge temperature protection, error code P4 is displayed
Normal operation (sizes 9.1 to 14.1)
Discharge temperature > 115°C ↓↑Discharge temperature < 90°C
High discharge temperature protection, error code P4 is displayed
When the discharge temperature rises above 115°C, the system displays P4 protection and the unit shuts down. When
the discharge temperature drops below 95°C, the compressor enters re-start control.
4.7.4 Low discharge temperature protection control
Normal operation
Tp < Th for more than 5 minutes ↓↑Tp ≥ Th
Low discharge temperature protection, error code EA is displayed
When the discharge temperature (Tp) is below suction temperature (Th) for more than 5 minutes, the system displays
EA protection and the unit shuts down.
When the discharge temperature is higher than the suction temperature, the compressor enters re-start control.