Toshiba HWS-1403XWHD6-E, HWS-803XWHD6-E, HWS-1403XWHT9-E, HWS-1403H-E, HWS-1603H8R-E DATA BOOK

...

Download

AIR TO WATER HEAT PUMP

SERVICE MANUAL

Model name:

A10-006

Hydro Unit

HWS-803XWHM3-E(TR) HWS-803XWHT6-E(TR) HWS-803XWHD6-E HWS-803XWHT9-E HWS-1403XWHM3-E(TR) HWS-1403XWHT6-E(TR) HWS-1403XWHD6-E HWS-1403XWHT9-E(TR)

Hot Water Cylinder

HWS-1501CSHM3-E(-UK) HWS-2101CSHM3-E(-UK)

Outdoor Unit

HWS-803H-E(TR) HWS-1103H-E(TR) HWS-1403H-E(TR) HWS-1103H8-E HWS-1103H8R-E HWS-1403H8-E HWS-1403H8R-E HWS-1603H8-E HWS-1603H8R-E

HWS-3001CSHM3-E(-UK)

Contents

1 SAFETY PRECAUTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

2 NEW REFRIGERANT (R410A). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

2-1.Safety During Installation and Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

2-2.Installing refrigerant pipe . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

2-2-1.Steel pipe and joint . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

2-2-2.Processing of piping materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

2-3.Tools. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

2-3-1.Necessary tools. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

2-4.Recharging of refrigerant . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

2-5.Brazing of pipes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

2-5-1.Materials of brazing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

2-5-2.Flux . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

2-5-3.Brazing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

3 Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

4 Outside Drawing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

4-1.Hydro unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

4-2.Outdoor unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

4-3.Hot water cylinder. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

5 Wiring Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

5-1.Hydro Unit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

5-2.Outdoor Unit (Single phase Type) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

5-3.Outdoor Unit (3 phase type) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

5-4.Hot Water Cylinder Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

6 Key Electric Component Rating. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

6-1.Hydro Unit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

6-2.Outdoor Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

6-3.Hot Water Cylinder Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

6-4.Water Heat Exchange Control Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

6-5.Outdoor Control Board (Single phase Type) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

6-6.Outdoor Unit Control (3 phase type). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

MCC-1596 (Compressor IPDU) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

MCC-1597 (Fan Motor IPDU). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

MCC-1599 (Interface (CDB)) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

MCC-1600 (Noise Filter). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

7 Refrigeration Cycle / Water System Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

7-1.Water System Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

7-2.Refrigeration Cycle System Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

8 Operational Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

9 Method of Defect Diagnosis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81

9-1.Matters to be confirmed first. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82

9-1-1.Check the power supply voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82

9-1-2.Check for any miswiring of the connection cables between the hydro unit and the

outdoor unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82

9-1-3.About the installation of the temperature sensor. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82

9-2.Non-defective operation (pro gram operation) … No fault code display appears.. . . . . . . . . . . . . . 82

9-3.Outline of the determination diagr am . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83

9-3-1.Procedure of defect diagnosis. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83

9-3-2.How to determine from the check code on the remote control . . . . . . . . . . . . . . . . . . . . . 83

9-3-3.How to cancel a check code on the remote controller . . . . . . . . . . . . . . . . . . . . . . . . . . . 83

9-3-4.How to diagnose by error code. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84

9-4.Diagnosis flow chart for each error code . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91

9-4-1.Hydro unit failure detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91

9-4-2.Outdoor Unit Failure Detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 109

9-4-3.Temperature sensor, temperature-resistance characteristic table . . . . . . . . . . . . . . . . . 122

9-5.Operation check by PC board switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 123

9-5-1.Operation check mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 123

9-6.Brief method for checking the key components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 124

9-6-1.Hydro unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 124

9-6-2.Outdoor unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 125

10 Hydro unit and Outdoor Unit Settings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 127

11 Replacement of the Service P.C. Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 152

12 How to Exchange Main Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 153

13 Periodic Inspection Items. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 193

14 Part Exploded View, Part List. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 194

1 SAFETY PRECAUTIONS

The unit and this service guide list very important safety precautions. Understand the following details (indications and symbols) before reading the body text, and follow the instructions.

[About indication]

Indication Meaning of Indication

DANGER

WARNING

CAUTION

*Property damage indicates extended damage to property, furniture, livestock, or pets.

Indicates that a wrong operation may cause a service engineer and the third persons around to get fatal or serious injuries.

Indicates that a wrong operation may cause a service engineer and the third persons around to get fatal or serious injuries, or that unit defective after the operation may cause a user to have a similar serious accident.

Indicates that a wrong operation may cause a service engineer and the third persons around to get injuries or may cause property damage*, or that unit defective after the operation may cause a user to have a similar accident.

[About symbols]

Symbols Meaning of Symbols

Indicates a forbidden action. Specific forbidden actions are des c ribed in text near the symbol.

Indicates a forcible (must do) action. Specific forcible actions are described in text near the symbol.

Indicates a caution (including danger and warning). Specific cautions are described in picture or text inside or near the symbol.

DANGER

<Turn off the power breaker> Turn off the power breaker before removing the front panel and cabinet.

• Failure to do so may cause a high voltage electric shock, leading to death or injury.

• During an operation, the second side circuit of high pressure transmission(*) are applied with a high voltage of 230V or higher.

• Touching the circuit even with an electrical insulator, let alone a bare hand or body, causes an electric shock.

∗: For details, see the schematic.

<Discharge between terminals> When the front panel and cabinet are removed, make short-circuit current to discharge between high pressure

capacitor terminals.

• Failure to do so may cause a high voltage electric shock, leading to death or injury.

• After the power is turned off, the high pressure capacitor is still charged with high voltage.

<Forbidden> Do not turn on the power breaker after removing the front panel cabinet.

• Failure to do so may cause a high voltage electric shock, leading to death or injury.

WARNING

<Check earth ground> Before starting failure diagnosis or repair, check tha t the grou nd wire (∗) is connected to the unit ground terminal.

• An unconnected ground wire could cause an electric shock if electric leakage occurs.

• If the earth ground is not properly connected, ask an electrical worker for rework of the ground connection.

∗: Ground wire of class D grounding

WARNING

<No modification> Do not modify the unit.

• Do not disassemble or modify the parts also.

• A fire, an electric shock, or an injury may occur.

<Use specified parts> Use the specified parts (∗) when replacing them.

• Using parts other than specified ones may cause a fire or an electric shock.

∗: For details, see the parts price list.

<Keep children away from unit> Keep any person (including children) oth er than service eng ineers away from a fail ure diagnosis or repairin g place.

• A tool or disassembled parts may cause an injury.

• Advise the customer to keep the third persons (including children) away from the unit.

<Insulation treatment> After connecting a cut lead with a crimp contact, discharge by facing the closed side upward.

• Connect lead wires with crimping terminals and turn the closed end upwards to avoid exposure to water.

<Watch out for fire> Observe the following instructions when repairing the refrigerant cycle.

(1) Watch out for surrounding fire. Always put out the fire of stove burner or other devices before starting the repair.

Should the fire fail to be put out, the oil mixed with refrigerant gas could catch fire.

(2) Do no use a welder in a closed room.

A room with no ventilation may cause carbon monoxide poisoning.

(3) Keep away flammable mate rials.

The materials may catch the fire of a welder.

<Use refrigerant carefully> Check the refrigerant name to use the tools and members appropriate for the refrigerant.

• A product using the refrigerant R410A has the refrigerant name prominently displayed on its outdoor unit. In addition, the diameter of the service port is changed from that of the conventional R22 to prevent incorrect filling.

Never use refrigerant other than R410A for Air to Water Heat Pump using R410A. Also, never use R410A for Air to Water Heat Pump using other refrigerant (such as R22).

• A mixture of R410A with different ones excessively raises the pressure in the refrigerant cycle, leading to an injury due to burst.

Do not make additional charge of the refrigerant.

• An additional charge when refrigerant gas leaks changes the refrigerant composition in the refrigerant cycle, causing the characteristics change of the Air to Water Heat Pump or excessive high pressure in the refrigerant cycle with more than the specified amount of refrigerant charged. This may cause burst or an injury. If the refrigerant gas leaks, perform refrigerant recovery or other operation to make the Air to Water Heat Pump contain no refrigerant, and then perform vacuuming. After that, refill the unit with the defined amount of liquid refrigerant. Never charge refrigerant exceeding the amount specified.

When the refrigerant cycle is refilled with refrigerant, do not enter air or refrigerants other than the specified refrigerant, R410A.

• A mixture of R410A with air or an inappropriate substance causes excessive high pressure inside the refrigerant cycle, leading to an injury due to burst.

Check that there is no refrigerant gas leak after the installation is completed.

• If it catches fire of a fan heater, a space heater, or a stove, poisonous gases may be produced.

<Be careful with wiring> After a repair is completed, be sure to reassemble the parts and put the wiring back to its original state. In addi tion,

be careful with the internal wiring not to be caught in a cabinet or panel.

• A defective assembly or wiring may cause a disaster at a customer site due to electrical leakage or a fire.

<Check for water leak> After the repair of a water pathway is completed, check that there is no water leak.

• In using the product, water leak may cause a fire at a customer site due to electrical leakage or an electric shock.

WARNING

<Check insulation> After the work is completed, check with an insulating-resistance tester (500V) that the insulation resistance between

the live and dead-metal parts is 2 MΩ or higher.

• A low insulation resistance may cause a disaster at a customer site due to electrical leakage or an electric shock.

<Ventilate> Ventilate if refrigerant gas leaks during service work.

• Should refrigerant gas catch fire, poisonous gases may be produced. A closed room full of leaking refrigerant results in the absence of oxygen; it is dangerous. Make sure to ventilate.

<Caution: electric shock> When checking a circuit while energized if necessary, use rubber gloves not to contact the live part.

• Contact with the live part may cause an electric shock.

• The unit contains high-voltage circuits. Contact with a part in the control board with your bare hand may cause an electric shock. Take enough care to check circuits.

<Turn off the power breaker> Because the electrical components are energized with high voltage, always turn off the power breaker before

starting to work.

• Failure to do so may cause an electric shock.

<Always do> Should refrigerant gas leak, find where the gas leaks and properly repair it.

• To stop the repair work because the leakage location cannot be identified, perform refrigerant recovery and close the service valve. Failure to do so may cause the refrigerant gas to leak in a room. Although refrigerant gas alone is harmless, if it catches fire of a fan heater, a space heater, or a stove, poisonous gases may be produced.

When installing the unit or re-installing it after relocation, follow the installation guide for proper operation.

• A defective installation may cause a refrigerant cycle defective, a water leak, an electric shock, or a fire.

<Check after repair> After a repair is completed, check for any abnormality.

• Failure to do so may cause a fire, an electric shock, or an injury.

• Turn off the power breaker to perform check.

After a repair is completed (and the front panel and cabinet are placed), make a test run to check for any abnormality such as smoke or abnormal sound.

• Failure to do so may cause a fire or an electric shock. Place the front panel and cabinet before making a test run.

<Check after re-installation> Check that the following are properly performed after re-installation.

(1) The ground wire is properly connected. (2) The installation is stable without any tilt or wobbles.

Failure to check them may cause a fire, an electric shock, or an injury.

CAUTION

<Wear gloves> Wear gloves (∗) when performing repair.

• Failure to do so may cause an injury when accidentally contacting the parts.

∗: Thick gloves such as cotton work gloves

<Cooling check> Perform service work when the unit becomes cool enough after the operation.

• High temperature of compressor piping or other equipment after a cooling or heating operation may cause burn.

<Tighten with torque wrench> Tighten a flare nut with a torque wrench in the specified method.

• A flare nut tightened too much might crack after a long period, causing refrigerant leak.

2 NEW REFRIGERANT (R410A)

This Air to Water Heat Pump adopts a new refrigerant HFC (R410A) to prevent destruction of the ozone layer. The working pressure of R410A refrigerant is 1.6 times higher than that of the conventional refrigerant R22.The

refrigerant oil is also changed for the new refrigeration. Therefore, during installation or service work, be sure that water, dust, former refrigerant, or refrigeration machine oil does not enter the refrigerant cycle of the new type refrigerant Air to Water Heat Pump. A wrong installation or service operation may cause a serious accident. Read carefully the following instructions to use the tools or members for R410A for safety work.

2-1. Safety During Installation and Service

• Use only the refrigerant R410A for Air to Water Heat Pump using R410A. A mixture of R410A with different ones excessively raises the pressure in a refrigerant cycle, leading to an injury due to burst.

• Check the refrigerant name to use the tools and members appropriate for the refrigerant. A product using the refrigerant R410A has the refrigerant name prominently displayed on its outdoor unit. In addition, the diameter of the service port is changed from that of the conventional R22 to prevent incorrect filling.

• Ventilate if refrigerant gas leaks during service work. Should refrigerant gas catch fire, poisonous gases may be produced. A closed room full of leaking refrigerant results in the absence of oxygen; it is dangerous. Make sure to ventilate.

• When the refrigerant cycle is refilled with refrigerant, do not mix air or refrigerants other than the specified refrigerant, R410A. A mixture of R410A with air or an inappropriate substance causes exce ssive high pressure inside the refrig erant cycle, leading to an injury due to burst.

• Check that no refrigerant gas leaks after the installation is completed. Should a refrigerant gas leak in a room and catch fire, poisonous gases may be produced.

• When installing the unit that contains lar ge amount of refrigerant such as Air to Water Heat Pump, take measures to prevent the refrigerant from exceeding the threshold concentration in case it leaks. Should leaking refrigerant exceed the threshold concentration could cause an accident due to oxygen deficient.

• When installing the unit or re-installing it after relocation, follow the installation guide for proper operation. A defective installation may cause a refrigerant cycle defective, a water leak, an electric shock, or a fire.

• Do not modify the product. Do not disassemble or modify the parts also. A fire, an electric shock, or an injury may occur.

2-2. Installing refrigerant pipe

2-2-1. Steel pipe and joint

For refrigerant piping, steel pipe and joints are mainly used. Select those comply with JIS (Japanese Industrial Standards) for a service work. Also, use such clean piping materials that less im purities attach to the inside of pipe and joints.

Copper pipe

Use copper pipe of the “copper and copper alloy seamless pipe” type with attach oil quantity of 40 mg / 10 m or less. Do not use pipe that is cracked, distorted, or discoloured (especially inside).The expansion valve or capillary may get clogged with impurities. Considering that Air to Water Heat Pump using R410A is higher in pressure than those using the conventional R22, be sure to select the material that comply with the standard. Table 2-1 shows the thickness of copper pipe used for R410A. Never use commercially available thin-walled copper pipe of 0.8 mm thick or less.

Table 2-1 Wall thickness of copper pipe

Wall thickness (mm)

Nominal diameter Outer diameter R410A

3/8 9.52 0.80 5/8 15.88 1.00

Joints

For the joint of copper pipe, flared joint and socket joint are used. Remove impurities from a joint before using it.

• Flared joint A flared joint cannot be used for the copper pipe whose outer diameter is 20 mm or larger. A socket join t can be used instead in that case. Table 2-2-3 and 2-2-4 show the dimension s of flare pipe, the end of flared joint, and flare nuts.

• Socket joint A socket joint is used to connect the thick-walled pipe of mainly 20 mm or larger in diameter. Table 2-2 shows the wall thickness of socket joints.

Table 2-2 The minimum wall thickness of socket joints

Nominal diameter

3/8 9.52 0.80 5/8 15.9 1.00

Reference of outer diameter of

copper pipe connected (mm)

Minimum joint wall thickness

(mm)

2-2-2. Processing of piping materials

When installing refrigerant pipe, prevent water or dust from entering the pipe, and do not use oil other than lubricant used for Air to Water Heat Pump. Make sure that no refrigerant leak occurs.

If piping needs lubrication, use lubricating oil whose water content is removed. After the oil is put in, be sure to seal the container with airproof cover or other covers.

Flare and precautions

1) Cut a pipe.

Cut slowly with a pipe cutter so that the pipe is not distorted.

2) Remove burr and flaw.

A burr or flaw in a flare part may cause refrigerant leak. Remove carefully all the burrs, and clean up the cut ends before installation.

3) Insert a flare nut.

4) Flare

Check that the clasps and copper pipe are clean. Flare correctly using the clasp. Use a flare tool for R410A or the conventional one. Flare processing dimension varies depending on the flare tool type. When using the conventional flare tool, use a gauge for size adjust me n t to secure the A dimension.

Figure 2-2-1 Flare dimension

Table 2-2-3 Flare processing related dimension for R410A

Nominal

diameter

3/8 9.52 0.8 0 to 0.5 1.0 to 1.5 2.0 to 2.5 5/8 15.9 1.0 0 to 0.5 1.0 to 1.5 2.0 to 2.5

Outer diameter

(mm)

Wall thickness

(mm)

Flare tool for R410A

clutch type

Table 2-2-4 Dimension of flare for R410A and flare nut

Nominal

diameter

3/8 9.52 0.8 13.0 13.2 9.7 20 18 5/8 15.9 1.0 19.1 19.7 15.9 24.5 26

Outer diameter

(mm)

Wall thickness

(mm)

ABCD

Dimension (mm)

Figure 2-2-2 Relationship between flare nut and flare surface

45° - 46°

A (mm)

Conventional flare tool

Clutch type Butterfly-nut type

Flare nut width

(mm)

DCB A

43° - 45°

Flare connecting procedure and precautions

1) Make sure that the flare and connecting portions do not have any flaw and dust.

2) Correctly align the flared surface and the connecting axis.

3) Tighten the flare with designated torque by means of a torque wrench. The tightenin g to rque fo r R4 10A is the same as that for the conventional R22. If the torque is weak, gas leakage may occur. If it is too strong, the flare nut may crack and may be made non-removable. When choosing the tightening toque, comply with values designated by products. Table 2-2-5 shows reference values.

NOTE

When applying oil to the flare surface, be sure to use oil designated by the product. Us ing any other oil deteriorates the lubricating oil, possibly causing the compressor to burn out.

Table 2-2-5 Tightening torque of flare for R410A (Reference values)

Nominal diameter Outer diameter (mm) Tightening torque N•m (kgf•m)

3/8 9.52 33 to 42 (3.3 to 14.2) 5/8 15.9 66 to 82 (6.8 to 8.2)

2-3. Tools

2-3-1. Necessary tools

In Air to Water Heat Pump using R410A, the service port diameter of packed valve of the outd oor un it is change d to prevent mixing of other refrigerant. To reinforce the pressure resistance, flare dimensions and opposite side dimensions of flare nut (For Ø 12.7 copper pipe) of the refrigerant piping are lengthened.

Because the refrigerating machine oil is changed, mixing of oil may generate sludge, clog capillary, or cause other problems. Accordingly, the tools to be used include:

• tools dedicated for R410A (Those that cannot be used for the conventional refrigerant, R22)

• tools dedicated for R410A, but can be also used for the conventional refrigerant, R22

• tools that can be used for the conventional refrigerant, R22. The following table shows the tools dedicated for R410A and their interchangeability.

Tools dedicated for R410A (The following tools must be for R410A)

Tools whose specifications are changed for R410A and their interchangeability

R410A Air to Water Hear Pump

No. Tool to be used Usage

1 Flare tool Pipe flaring Yes *(Note 1) Yes 2 3 Torque wrench (For Ø15.9) Connection of flare nut Yes No No

4 Gauge manifold 5 Charge hose 6 Vacuum pump adapter Vacuum evacuating Yes No Yes

7 8 Refrigerant cylinder Refrigerant charge Yes No No

9 Leakage detector Gas leakage check Yes No Yes

10 Charging cylinder Refrigerant charge *(Note 2) No No

Copper pipe gauge for

adjusting projection margin

Electrical balance for

refrigerant charging

Flaring by conventional

flare tool

Evacuating, refrigerant charge, run check, etc.

Refrigerant charge Yes No Yes

For R410A

Existence of new

equipment

installation

Conventional

equipment can be

used

Yes *(Note 1) *(Note 1)

Yes No No

Conventional refrigerant

Air to Water Heat Pump

installation

New equipment can be

used with conventional

refrigerant

* (Note 1) Flaring for R410A by using the conventional flare tool requires projection margin adjustment. This

adjustment requires copper pipe gauge or other instrument.

* (Note 2) A charging cylinder for R410A is currently under development.

General tools (Conventional tools are available)

In addition to the above dedicated tools, the following equipment also available for R22 is necessary as the general tools.

1. Vacuum pump Use this by attaching vacuum pump

adapter.

4. Reamer 9. Hole core drill (Ø65)

5. Pipe bender 10. Hexagon wrench (Opposite side 4mm)6. Level vial

2. Torque wrench (For Ø6.35) 7. Screwdriver (+, –) 11. Tape measure

3. Pipe cutter 8. Spanner or Monkey wrench 12. Metal saw

Also prepare the following equipment for other work methods or run check.

1. Clamp meter 3. Insulation resistance meter

2. Thermometer 4. Electroscope

2-4. Recharging of refrigerant

Recharge, if necessary, the specified amount of new refrigerant according to the following procedure.

Recover the refrigerant, and check that no refrigerant remains in the refrigerant cycle.

Connect the charge hose to packed valve service port on the outdoor unit's gas side.

Connect the charge hose to the vacuum pump adapter.

Open fully both packed valves on the liquid and gas sides.

Open fully the handle of gauge manifold Lo, turn on the vacuum pump, and then perform vacuum evacuating.

When the compound gauge's pointer indicates

-0.1 MPa (-76cmHg), close fully the handle Lo and turn off the vacuum pump.

Let the equipment stay as it is for one to two minutes and check that the compound gauge pointer does not return.

Place the refrigerant cylinder to the electronic balance, connect the connecting hose to the cylinder and the connecting port of the electronic balance, and then charge liquid refrigerant.

(For refrigerant charging, see the figure below)

NOTE

• Never charge refrigerant exceeding the specified amount.

• If the specified amount of refrigerant cannot be charged, charge it a little at a time while running refrigerant recovery (pump down).

• Do not make additional charging. An additional charge when refrigerant leaks changes the refriger ant composition in the refrigerant cycle, causing the characteristics change of the Air to Water Heat Pump or excessive high pressure in the refrigerant cycle with more than the specified amount of refrigerant charged. This may cause burst or an injury.

Fig. 2-4-1 Configuration of refrigerant charging

(Hydro unit)

Refrigerant cylinder (with siphon)

Check valve

CloseOpen

Open/close valve for charging

Electronic balance for refrigerant charging

(Outdoor unit)

Open

Service port

NOTE

• Make sure that the setting is appropriate so that liquid can be charged.

• A cylinder with siphon enables liquid to be charged without the cylinder turned upside down.

[Cylinder without siphon]

Gauge manifold

Outdoor unit

Siphon pipe

Gauge manifold

Refrigerant cylinder

Electronic balance

[Cylinder with siphon]

Outdoor unit

Refrigerant cylinder

Electronic balance

NOTE

• Because R410A is HFC mixed refrigerant, charging with gas changes the charged refrigerant composition, causing the equipment characteristics to change.

2-5. Brazing of pipes

2-5-1. Materials of brazing

Silver brazing metal

Silver brazing metal is an alloy mainly composed of silver and copper.

It uses iron, copper, or copper alloy, and is relatively expensive though it excels in soldering.

Phosphor bronze brazing metal

Phosphor bronze brazing metal is generally used to join copper or copper alloy.

Low temperature brazing metal

Low temperature brazing metal is generally called solder, and is an alloy of tin and lead. Do not u se it for refrigerant piping because its adhesive capacity is low.

NOTE

• Phosphor bronze brazing metal tends to react with sulfur, producing a fragile compound water solution. This may cause gas leakage. Therefore, use other type of brazing metal at a hot spring resort or similar place, and coat the surface with coatings.

• To braze the pipe again while performing service work, use the same type of brazing metal.

2-5-2. Flux

Type of flux

• Non-corrosive flux It is generally a compound of borax and boric acid. It is effective when brazing temperature is higher than 800 °C.

• Active solvent Most of this type of flux is generally used for silver brazing. It features the increase of oxide film while moving the capability to the borax-boric acid compound to add compounds such as potassium fluoride, potassium chloride, or sodium fluoride.

Piping materials for brazing and brazing metal / flux

Piping material

Copper - Copper Phosphor copper Do not use

Copper - Iron Silver Paste flux

Iron - Iron Silver Vapour flux

NOTE

• Do not enter flux into the refrigerant cycle.

• If chlorine contained in the flux remains within the pipe, the lubricating oil deteriorates. Because of this, use a flux that does not contain chlorine.

• When adding water to the flux, use water that does not contains chlorine. (e.g. distilled water or ionexchange water)

• Remove the flux after brazing.

Brazing metal to be

used

Flux to be used

Why flux is necessary

• Removing all the oxide film and any foreign matter on the metal surface assists the flow of brazing metal.

• Flux prevents the metal surface from being oxidized in the course of brazing.

• Reducing the brazing metal's surface tension enables the brazing metal to adhere for better metal processing.

Characteristics of flux

• The activation temperature of flux matches the brazing temperature.

• A wide effective temperature range makes flux hard to carbonize.

• It is easy to remove slag after brazing.

• The corrosive action to the treate d metal and brazing metal is minimum.

• The good performance of flux gives no harm to a human body. Since flux works in a complicated manner as described above, select an appropriate type of flux according to metal treatment type , brazing metal and brazing method, or other conditions.

2-5-3. Brazing

Brazing must be performed by a person qualified and experienced with theoretical knowledge since the operation requires sophisticated techniques. Perform brazing while flowing dry nitrogen gas (N2) to prevent oxide film from forming during brazing application to the inside of the pipe.

NOTE

• Never use gas other than nitrogen gas.

Brazing method to prevent oxidation

1) Attach a reducing valve and a flow meter to the nitrogen cylinder.

2) Use a copper pipe to direct the piping material, and attach the flow meter to the balance.

3) Apply a mark to the clearance between the piping material and the copper pipe filled with nitrogen to prevent the back flow of the nitrogen gas.

4) If the nitrogen gas flows out, be sure to keep open the piping end.

5) Use the reducing valve to adjust the nitrogen gas flow speed to 0.05 m (0.2 kgf/cm

/hour or 0.02 MPa

6) After the steps above, keep the nitrogen gas flowing until the pipe cools down to a certain extent. (Temperature where the pipe is cool enough to be touched by hands)

7) Remove the flux completely after brazing.

Fig 2-5-1 Prevention of oxidation during brazing

Flow meter

Stop valve

Nitrogen gas cylinder

From nitrogen cylinder

Pipe

Nitrogen gas

Robber plug

3 Specifications

Unit name Hydro unit HWS-803XWHM3-E, 803XWHT6-E, 803XWHD6-E, 803XWHT9-E

Heating capacity *1 (kW) 8.0 Cooling capacity *2 (kW) 6.0 Variable range of compressor frequency 10 - 70 Hz Power source Single phase 50Hz 220 - 230V Operation mode Heating Cooling Electric characteristic *1 *2 Hydro unit Current (A) 0.98 0.46

Operating noise *1 *2 *4 Hydro unit (dB(A)) 29 29

Coefficient of performance *1 *2 4.40 2.82 Hydro unit Outer dimension Height (mm) 925

Outdoor unit Outer dimension Height (mm) 890

Refrigerant piping Connection method Flare connection

Refrigerant Refrigerant name R410A

Water piping Pipe diameter R1 1/4

Operating temperature range Hydro unit (°C) 5-32

Operating humidity range Hydro unit (%) 15-85

Wiring connection Power wiring 3 wires: including ground line (Outdoor unit)

*1 Heating performance measurement conditions: outside air temperature 7 °C, water supply temperature 30 °C, outlet temperature 35 °C, refrigerant piping length 7.5 m (no height

difference).

*2 Cooling performance measurement conditions: outside air temperature 35 °C, water s upply temperature 12 °C, outlet temperature 7 °C, refrigerant piping length 7.5 m (no height

difference).

*3 • The remote controller should be shipped with the hydro unit.

• Use two 1.5-meter wires to connect the hydro unit with the remote controller.

*4 The outdoor unit operating noise is measured at the point of 1m away from the unit back surface centre and 1m high from the ground. The hydro unit operating noise is measu r ed at the

point of 1m away from the unit front surface centre.

The value of the operating noise varies depending on room structure where the unit is installed. *5 Do not leave the hydro unit at 5 °C or below. *6 Check the water piping for leakage under the maximum operating pressure.

Outdoor unit HWS-803H-E

Power (kW) 0.101 0.097

Outdoor unit Current (A) 7.64 8.90

Total Starting current (A) 8.62 9.36

Outdoor unit (dB(A)) 49 49

Net weight (kg) 50 Color Silky shade (Munsell 1Y8.5/0.5) Remote controller

Outer dimension *3

Circulating pump Motor output (W) 125 (MAX)

Heat exchanger Plate-type heat exchange

Net weight (kg) 63 Color Silky shade (Munsell 1Y8.5/0.5) Compressor Motor output (W) 1400

Fan motor Standard air capacity (m3/min) 50.0

Hydro unit Liquid Ø9.52

Outdoor unit Liquid Ø9.52

Maximum length (m) 30 Maximum chargeless length (m) 30 Maximum height difference (m) ±30 Minimum length (m) 5

Charge amount (kg) 1.8

Maximum length (m) None (Need the flow rate 13 /min or more) Maximum height difference (m) ±7 Maximum working water pressure (kPa) 300

Outdoor unit (°C) -20-43

Outdoor unit (%) 15-100

Connecting line 4 wires: including ground line

Power factor (%) 91.5 91.7

Power (kW) 1.719 2.033 Power factor (%) 97.8 99.3

Width (mm) 525 Depth (mm) 355

Height (mm) 120 Width (mm) 120 Depth (mm) 16

Flow rate (L/min) 22.9 17.2 Type Non-self-suction centrifugal pump

Width (mm) 900 Depth (mm) 320

Type Twin rotary type with DC-inverter variable speed control Model DA220A2F-22L

Motor output (W) 60

Gas Ø15.9

Unit name Hydro unit HWS-1403XWHM3-E, 1403XWHT6-E, 1403XWHD6-E, 1403XWHT9-E

Heating capacity *1 (kW) 11.2 14.0 Cooling capacity *2 (kW) 10.0 11.0 Variable range of compressor frequency 10 - 60Hz 10 - 70 Hz Power source Single phase 50Hz 220 - 230V Operation mode Heating Cooling Heating Cooling Electric characteristic *1 *2 Hydro unit Current (A) 0.63 0.61 0.67 0.63

Operating noise *1 *2 *4 Hydro uni t (dB(A)) 29 29 29 29

Coefficient of performance *1 *2 4.77 2.84 4.50 2.70 Hydro unit Outer dimension Height (mm) 925

Outdoor unit Outer dimension Height (mm) 1340

Refrigerant piping Connection method Flare connection

Refrigerant Refrigerant name R410A

Water piping Pipe diameter R1 1/4

Operating temperature range Hydro unit (°C) 5-32

Operating humidity range Hydro unit (%) 15-85

Wiring connection Power wiring 3 wires: including ground line (Outdoor unit)

*1 Heating performance measurement conditions: outside air temperature 7 °C, water supply temperature 30 °C, outlet temperature 35 °C, refrigerant piping length 7.5 m (no height

difference). *2 Cooling performance measurement conditions: outside air temperature 35 °C, water s upply temperature 12 °C, outlet temperature 7 °C, refrigerant piping length 7.5 m (no height

difference). *3 • The remote controller should be shipped with the hydro unit.

• Use two 1.5-meter wires to connect the hydro unit with the remote controller.

*4 The outdoor unit operating noise is measured at the point of 1m away from the unit back surface centre and 1m high from the ground. The hydro unit operating noise is measur ed at the

point of 1m away from the unit front surface centre.

Outdoor unit HWS-1103H-E HWS-1403H-E

Power (kW) 0.135 0.130 0.145 0.135

Outdoor unit Current (A) 9.94 14.88 13.37 17.47

Total Starting current (A) 10.57 15.49 14.04 18.10

Outdoor unit (dB(A)) 49495151

Net weight (kg) 54 Color Silky shade (Munsell 1Y8.5/0.5) Remote controller

Outer dimension *3

Circulating pump Motor output (W) 190 (MAX)

Heat exchanger Plate-type heat exchange

Net weight (kg) 93 Color Silky shade (Munsell 1Y8.5/0.5) Compressor Motor output (W) 2500

Fan motor Stand ard air capacity (m3/min) 103.0

Hydro unit Liquid Ø9.52

Outdoor unit Liquid Ø9.52

Maximum length (m) 30 Maximum chargeless length (m) 30 Maximum height difference (m) ±30 Minimum length (m) 5

Charge amount (kg) 2.7

Maximum length (m) None (Need the flow rate 17.5 /min or more) Maximum height difference (m) ±7 Maximum working water pressure (kPa) 300

Outdoor unit (°C) -20-43

Outdoor unit (%) 15-100

Connecting line 4 wires: including ground line

Power factor (%) 93.2 92.7 94.0 93.2

Power (kW) 2.2153.392.9653.945 Power factor (%) 96.9 99.1 96.4 98.1

Width (mm) 525 Depth (mm) 355

Height (mm) 120 Width (mm) 120 Depth (mm) 16

Flow rate (L/min) 32.1 28.9 40.1 31.5 Type Non-self-suction centrifugal pump

Width (mm) 900 Depth (mm) 320

Type Twin rotary type with DC-inverter variable speed control Model DA422A3F-25M

Motor output (W) 100 × 2

Gas Ø15.9

Unit name Hydro unit HWS-1403XWHM3-E, 1403XWHT6-E, 1403XWHD6-E, 1403XWHT9-E

Heating capacity *1 (kW) 11.2 14.0 16.0 Cooling capacity *2 (kW) 10.0 11.0 13.0 Variable range of compressor frequency 10 - 60Hz 10 - 60 Hz 10 - 70 Hz Power source 3 phase 50Hz 380 - 400V Operation mode Heating Cooling Heating Cooling Heating Cooling Electric characteristic *1 *2 Hydro unit Current (A) 0.63 0.61 0.67 0.63 0.69 0.66

Operating noise *1 *2 *4 Hydro unit (dB(A)) 29 29 29 29 29 29

Coefficient of performance *1 *2 4.69 2.84 4.36 2.70 4.30 2.71 Hydro unit Outer dimension Height (mm) 925

Outdoor unit Outer dimension Height (mm) 1340

Refrigerant piping Connection method Flare connection

Refrigerant Refrigerant name R410A

Water piping Pipe diameter R1 1/4

Operating temperature range Hydro unit (°C) 5-32

Operating humidity range Hydro unit (%) 15-85

Wiring connection Power wiring 5 wires: including ground line (Outdoor unit)

*1 Heating performance measurement conditions: outside air temperature 7 °C, water supply temperature 30 °C, outlet temperature 35 °C, refrigerant piping length 7.5 m (no height

difference). *2 Cooling performance measurement conditions: outside air temperature 35 °C, water s upply temperature 12 °C, outlet temperature 7 °C, refrigerant piping length 7.5 m (no height

difference). *3 • The remote controller should be shipped with the hydro unit.

• Use two 1.5-meter wires to connect the hydro unit with the remote controller.

*4 The outdoor unit operating noise is measured at the point of 1m away from the unit back surface centre and 1m high from the ground. The hydro unit operating noise is measu r ed at the

point of 1m away from the unit front surface centre.

Outdoor unit HWS-1103H8(R)-E HWS-1403H8(R)-E HWS-1603H8(R)-E

Power (kW) 0.135 0.130 0.145 0.135 0.150 0.140

Outdoor unit Current (A) 4.03 5.65 5.23 6.50 5.95 7.50

Total Starting current (A) 4.66 6.26 6.06 7.13 4.26 8.16

Outdoor unit (dB(A)) 495051515252

Net weight (kg) 54 Color Silky shade (Munsell 1Y8.5/0.5) Remote controller

Outer dimension *3

Circulating pump Motor output (W) 190 (MAX)

Heat exchanger Plate-type heat exchange

Net weight (kg) 93 Color Silky shade (Munsell 1Y8.5/0.5) Compressor Motor output (W) 2500

Fan motor Standard air capacity (m3/min) 103.0

Hydro unit Liquid Ø9.52

Outdoor unit Liquid Ø9.52

Maximum length (m) 30 Maximum chargeless length (m) 30 Maximum height difference (m) ±30 Minimum length (m) 5

Charge amount (kg) 2.7

Maximum length (m) None (Need the flow rate 17.5 /min or more) Maximum height difference (m) ±7 Maximum working water pressure (kPa) 300

Outdoor unit (°C) -20-43

Outdoor unit (%) 15-100

Connecting line 4 wires: including ground line

Power factor (%) 93.2 92.7 94.0 93.2 94.5 92.3

Power (kW) 2.255 3.39 3.065 3.945 3.570 4.660 Power factor (%) 81.187.084.988.087.090.0

Width (mm) 525 Depth (mm) 355

Height (mm) 120 Width (mm) 120 Depth (mm) 16

Flow rate (L/min) 32.128.940.131.545.837.3 Type Non-self-suction centrifugal pump

Width (mm) 900 Depth (mm) 320

Type Twin rotary type with DC-inverter variable speed control Model DA422A3F-27M

Motor output (W) 100 × 2

Gas Ø15.9

4 Outside Drawing

4-1. Hydro unit

HWS-803XWHM3-E, 803XWHT6-E, 803XWHD6-E, 803XWHT9-E HWS-1403XWHM3-E, 1403XWHT6-E, 1403XWHD6-E, 1403XWHT9-E

40.540.5

371.5 355

2-dia.12x17 long hole (for dia.8-10 anchor bolt)

B leg part

92554

72.5 72.5 Anchor bolt

2020

960

Anchor bolt long hole pitch

525

380

long hole pitch

19.5

352

Manometer Remote controler

A leg part

Drain nipple Water inlet

connecting pipe 1 1/4"

259

2-dia.12x17 U-shape hole (for dia.8-10 anchor bolt)

309.5

11619.5

Hot water outlet connecting pipe 1 1/4"

135.5

186.5

158

37.5

Gas line dia.15.88 Liquid line dia.9.52

59.5144.5

4-2. Outdoor unit

HWS-803H-E

Name Description

Refrigerant piping outlet

Indoor and outdoor

connecting line outlet

Power source intake hole 38 knockout hole

Mounting bolt hole

( 12 17 U-shape hole)

Mounting bolt hole

( 12 17 long hole)

54 48

Portion B

Drain hole ( 25 burring hole)

200

Air inlet

380

170

Air outlet

Details of portion B

Details of portion A

Portion A

383

600

150

320

900

550

Refrigerant gas

Refrigerant liquid

connection

( 9.5 flare)

890

( 15.9 flare)

255 247

400

151

155

135

178

518

327

178

17.5

Air inlet

128

365

118

534

17.5

5-Drain hole ( 20 88 burring hole)

581

165 148

(12- 3 embossed)

Optional mounting hole

Knockout for lower part of piping

Z arrow view

HWS-1103H-E, 1403H-E, 1103H8(R)-E, 1403H8(R)-E, 1603H8(R)-E

Description

38 knockout hole

Name

Refrigerant piping outlet

Indoor and outdoor

connecting line outlet

Power source intake hole 2

Mounting bolt hole

( 12 17 long hole)

Portion B

Mounting bolt hole

( 12 17 U-shape hole)

Details of portion B

Details of portion A

54 48

9555

1340

320

( 15.9 flare)

Refrigerant gas connection

( 9.5 flare)

Refrigerant liquid connection

613 605

400

151

155

1880

135

Drain hole ( 25 burring hole)

200

Air inlet

380

17.5

170

Air inlet

128

118 74

Portion A

600

900

Air outlet

383

150

52 550

17.5 365

5-Drain hole ( 20 88 burring hole)

53412153485

360 655

518

327

178 178 178

70 581 74 581

(24- 3 embossed)

Optional mounting hole

Knockout for lower part of piping

Z arrow view

4-3. Hot water cylinder

HWS-3001CSHM3-E(-UK)

550

5952066.6

Specification

for UK only

2040

HWS-2101CSHM3-E(-UK)

550

5951497.6

Specification

for UK only

1474

HWS-1501CSHM3-E(-UK)

550

5951114

Specification

for UK only

1090

5 Wiring Diagram

5-1. Hydro Unit

Color identification

BLK : BLACK BRW : BROWN GRY : GRAY PNK : PINK WHI : WHITE

WHI WHI

YEL

5251

WPM

*See DIP SW13_1

BLU

2WV

BLU : BLUE GRN : GREEN ORN : ORANGE RED : RED YEL : YELLOW

BRW

WARNING

CAUTION

YEL BLU

BRW

WHI

WHI RED

WHI

RED

WHI

YEL

BH 3WV

(2-wire spring return)

WHI

YEL

RED

3WV

(3-wire SPST type)

(3-wire SPDT type)

TB 05

Type 1

TB 05

Type 2

Type 3

787 6 55 4 3 2

3 2

Perform the grounding from the earth terminal in the terminal block of the outdoor unit.

Electric shock may happen. Don't touch the electric parts.

CN10 (WHI)

CR10 CR11 CR12 CR13

CN01 (WHI)

F01 (5A)

PNK

RED

MIXV

(3-wire SPDT type)

PNK

RED

MIXV (3-wire SPST type)

WHI

RY 11

RY 10

RY 13

ORN

RY 12

Relay

p.c.board

(MCC-1431)

WPM

TB 04

Type 1

TB 04

Type 2

CN02 (WHI)

LNNL

(HWS-AMS11E)

55 4 3 2 11

Remote

controller

GRY

BLK

*Option

Remote

controller

(HWS-AMS11E)

TB 07

WHI

RED BLU ORN GRN BRW

BLU BRW

RED WHI

YEL WHI

RED

WHI

GRY

BLK

BLK 2

1 CN41

CN203

(YEL)

(BLU)

6 5

5 4

CN501 (YEL)

3 2

313

CN603

(YEL)

313

CN601 (RED)

5 3

CN602

(WHI)

RY601RY600RY603 RY602

RY604

CN604

(BLU)

WHI

RED

468

PNK

ORN

RED

THOTWOTWITC

LPS

BLK

BLK 1 1

CN204 (BRW)

111

CN206

CN205

(RED)

P.C.board

(MCC-1511)

(WHI)

WHI

BLK

RED

CN207

CN212

(BLU)

(WHI)

SW01 SW02

12 43

SW10 SW11 SW12 SW13

CN605

(YEL)

1 1

BLK

RY606RY605

1 WHI

ORN

RY 02

WHI WHI

1234 1234 123 41234

SW06

CN606

(BLU)

1 1

WHI 6

487

RY607

3 3

RY 04RY03

ON21ON

SW07

PNK

*Option

TTW

TFI

TB 06

BRW

RED

1 CN213

CN214

(WHI)

SW14

OFF

CN305

CN100

(GRN)

(WHI)

WHI

RED

GRY

Symbol

WPM 3WV 2WV 2-way valve (local) MIXV BH RY01~RY06 LPS

RED

CN208

(BLU)

CN209 (GRN)

CN210 (RED)

CN211

(BLK)

CN200 (RED)

CN201

(WHI)

CN202

(YEL)

CN102

(WHI)

CN101

(WHI)

F100 Fuse T5A 250V~

Water pump motor 3-way valve (local)

Mixing valve (local) Booster heater Relay01~Relay06 Low pressure sensor Heater AC230V, 3kWBackup heater1, 2, 3

GRN

414

PJ20

GRN

414

PJ20

YEL

414

PJ17

YEL

414

PJ17

YEL

GRN

RED

BLK

323

BRW

RED

ORN

WHI

BLK

P100

HWS-803XWHT6-E : Installed HWS-1403XWHT6-E : Installed HWS-803XWHD6-E : Installed HWS-1403XWHD6-E : Installed HWS-803XWHT9-E : Installed HWS-1403XWHT9-E : Installed HWS-803XWHM3-E : Not installed HWS-1403XWHM3-E : Not installed

Parts name

Relay p.c.board (MCC-1217)

Photocoupler input p.c.board

(MCC-1214)

Photocoupler input p.c.board

(MCC-1214)

Pressure switch

4.15MPa

Thermal protector (auto)

Symbol

TC TWI TWO THO TTW TFI TB

3 2

TB1

3 2

TB1

3 2 1

TB1

3 2 1

TB1

Flow switch

75 5

Transformer

HWS-803XWHT6TR : Installed

HWS-1403XWHT6TR : Installed HWS-1403XWHT9TR : Installed HWS-803XWHM3TR : Not installed HWS-1403XWHM3TR : Not installed

Parts name

Water heat exchanger temperature sensor Water heat exchanger inlet temperature sensor Water heat exchanger outlet temperature sensor Backup heater outlet temperature sensor Hot water cylinder temperature sensor Floor heating inlet temperature sensor Terminal block

*Option p.c.board

Boiler control O/P Alerm O/P

Compressor operation O/P

Defrost O/P

Emergency stop I/P

Cooling thermostat I/P Heating thermostat I/P

1. The one-dot chain line indicates wiring at the local site, and the dashed line indicates accessories sold separately and service wires, respectively.

, and indicates the terminal board and the numberals ndicate the terminal numbers.

indicates P.C. board.

* Be sure to fix the electric

parts cover surely with screws. (Otherwise water enters into the box resulting in malfunction.)

WHI

RED

12111

Power supply 220 - 230V~ 50Hz or 380 - 400V~ 50Hz

TB 03

GRY TB 01

Outdoor unit

BRW

BLU

Hot water cylinder

1L1

3L2

4T2

2T1

BLU

BRW

F1 F2

BRW

Power supply 220 - 230V~ 50Hz

RY05

BLU

F1, F2 Fuse AC250V T30A

YEL/GRN

*Option

5L3

1L1

3L2

RY02

6T3

4T2

2T1

GRY

BRW

BLU

F3F4F6F5F8

BLU

BLK

BLU

BRW

L1L2

Power supply

380 - 400V 3N~ 50Hz

L12L3

2T1

BLU

GRY

Thermal protector (Single operation)

95 5

Thermal protector (Single operation)

95 5

5L3

6T3

4T2

BLK

BLU

F3~8 Fuse AC250V T30A

TB 02

Thermal protector (Single operation)95 5

RY04

BLU

Backup heater 1

Backup heater 2

Backup heater 3

HWS-803XWHT9-E HWS-1403XWHT9-E HWS-1403XWHT9TR

RY02

4T22T1 6T3

BLU

BRW

F3 F6

BLK

BLU

BRW

Power supply

380 - 400V 3N~ 50Hz

3L51L12L3

BLK

1L2

Thermal protector (Single operation)

1L1 3L2

2T1 4T2

F3~6 Fuse AC250V T30A

BLU

95 5

5L3

RY04

6T3

BLU

TB 02

Backup heater 1

Backup heater 2

HWS-803XWHT6-E HWS-1403XWHT6-E HWS-803XWHT6TR HWS-1403XWHT6TR

5L31L1 3L2

6T32T1 4T2

BLU

BRW

BLU

BRW

Power supply

220 - 230V~ 50Hz

Thermal protector (Single operation)

95 5

RY02

F3,F4 Fuse AC250V T30A

TB 02

Backup heater 1

HWS-803XWHM3-E HWS-1403XWHM3-E HWS-803XWHM3TR HWS-1403XWHM3TR

RY02

4T22T1 6T3

BLU

BRW

F3 F6

BLU

BRW

Power supply

220 - 230V 3~ 50Hz

3L51L12L3

BLK

1L2

BLK

BLU

Thermal protector (Single operation)

95 5

Thermal protector (Single operation)

95 5

1L1 3L2

2T1 4T2

F3~6 Fuse AC250V T30A

TB 02

5L3

6T3

BLU

Backup heater 1

Backup heater 2

RY04

HWS-803XWHD6-E HWS-1403XWHD6-E

5-2. Outdoor Unit (Single phase Type)

HWS-803H-E, HWS-1103H-E, HWS-1403H-E

Compressor

Fan motor

Pulse motor valve coil

Discharge temperature sonsor

Suction temperature sensor

Heat exchange sensor 1

Heat exchange sensor 2

Outdoor temperature sensor

Linetilter

4-way valve coil

Compressor case thermostat

Fuse 25 A, 250 VAC

Fuse 10A, 250 VAC

Reactor

Upper

RWB

(White)

White)

(

Symbol Item name

White)

(

20SF

Control board

an optional accessory or service wiring.

1. indicates a terminal plate. The number inside indicates the terminal number.

2. The double-dashed line indicates a local wiring while the dashed line indicates

3. indicates a printed board.

4. For the hydro unit circuit, see the hydro unit wiring diagram.

220-230V

WhiteRed

50Hz

single phase

Power supply

Earth

screw

WR B

Hydro unit

valve

4-way

Earth screw

Outdoor unit

coil

Earth screw

(White)

(Blue)

HMS-1103,

1403H-E only

(Yellow)

input

External

White)

(

power

Operating

White)

(

White)

Yellow)

(

(White)

White)(White)(White)

(

5-3. Outdoor Unit (3 phase type)

HWS-1103H8(R)-E, -1403H8(R)-E, -1603H8(R)-E

P.C. board MCC-1596

P.C. board MCC-1597

Hydro unit

(1103H8R-E 1403H8R-E 1603H8R-E) only

indicates the teminal block. Alphanumeric characters in the cycle indicate terminal No. The two-dot chain line indicates the wiring procured locally. indicates the P.C. board. For the hydro unit circuit, refer to the wiring diagram of the indoor unit.

5-4. Hot Water Cylinder Unit

Green / Yellow

TB06(TTW)

To hydro unit

Blue

Double pole thermal cut out

Brown

TTW sensor

Hot water cylinder heater

Blue

Brown

TB03(230V)

Supply 220 - 230 V from hydro unit Cable size 1.5 mm

(minimum)

6 Key Electric Component Rating

6-1. Hydro Unit

HWS-803XWHM3-E, T6-E, D6-E, T9-E

No. Component name

Circulating pump Backup heater 6 kW

Backup heater 9 kW Water heat exchange

temperature sensor (TC sensor)

Water inlet temperature sensor

(TWI sensor) Water outlet temperature sensor

(TWO sensor) Heater outlet water temperature

sensor (THO sensor)

Floor inlet temperature sensor

(TFI sensor) Pressure switch

Low pressure sensor Bimetal thermostat (auto)

Bimetal thermostat (singl e

operation)

Flow switch

Output board (OP)

Input board (OP)

Remote control (Main)

Remote control (Sub) Water 3-way valve terminal

Water 2-way valve terminal Mixing valve terminal

Circulating pump terminal

Booster heater terminal

Fuse

Model name

Type name Rating

M3-E T6-E D6-E T9-E

OOOO

OOO –

OOOO –

OOOO – OP OP OP OP OP OP OP OP

OOOO OP OP OP OP

OOOO –

UPS025-65 K 130 AC230 V 0.54 A (MAX)

O–

TCB-PCIN3E AC230 V 0.5 A DC24 V 1 A TCB-PCM03E Contact input HWS-AMS11E HWS-AMS11E

AC 400 V (3N) 6 kW (AC230 V 3 kW compatible)

AC400V (3N) 9 kW 10 kΩ (25°C)

10 kΩ (25°C)

Operating pressure 4.15 MPa +0 -0.3 MPa

Operating pressure 0. 20 M Pa Operating temperature 75±3°C DC42 V

/ 0.2 A Operating temperature 95±5°C

AC250 V / 16 A Operating flowing quantity 13 /min

AC230 V 0.1 A 2Wire, 3Wire SPST, SPDT type mountable

AC230 V 0.1 A 2Wire type mountable AC230 V 0.1 A

3Wire SPST, SPDT type mountable AC230 V 1.0 A AC230 V 1.0 A AC 250 V 30 A

O·········Applied OP·······Optional accessory

HWS-1403XWHM3-E, T6-E, D6-E, T9-E

No. Component name

Circulating pump Backup heater 6 kW

Backup heater 9 kW Water heat exchange

temperature sensor (TC sensor)

Water inlet temperature sensor

(TWI sensor) Water outlet temperature sensor

(TWO sensor) Heater outlet water temperature

sensor (THO sensor)

Floor inlet temperature sensor

(TFI sensor) Pressure switch

Low pressure sensor Thermal protector (auto)

Thermal protector (single

operation)

Flow switch

Output board (OP)

Input board (OP)

Remote control (Main)

Remote control (Sub) Water 3-way valve terminal

Water 2-way valve terminal Mixing valve terminal

Circulating pump terminal

Booster heater terminal

Fuse

Model name

M3-E T6-E D6-E T9-E

OOOO

OOO –

OOOO –

OOOO – OP OP OP OP OP OP OP OP

OOOO OP OP OP OP

OOOO –

Type name Rating

UPS25-80 130 AC230 V 0.83 A (MAX)

AC 400 V (3N) 6 kW (AC230 V 3kW compatible)

O–

AC 400 V (3N) 9 kW 10 kΩ (25°C)

10 kΩ (25°C)

Operating pressure 4.15 MPa +0 -0.3 MPa

Operating pressure 0. 20 M Pa Operating temperature 75±3°C DC42 V

/ 0.2 A Operating temperature 95±5°C AC250

V 16 A

Operating flowing quantity 17.5 L/min TCB-PCIN3E AC230 V 0.5 A DC24 V 1 A TCB-PCM03E Contact input HWS-AMS11E HWS-AMS11E

AC230 V 0.1 A

2Wire, 3Wire SPST, SPDT type

mountable

AC230 V 0.1 A 2Wire type mountable

AC230 V 0.1 A

3Wire SPST, SPDT type mountable

AC230 V 1.0 A

AC 250 V 30 A

O·········Applied OP·······Optional accessory

6-2. Outdoor Unit

HWS-803H-E

No. Component name Type name Rating

Compressor DA220A2F-22L

Outdoor fan motor ICF-280-A60-1 Output 60 W 4-way valve coil VHV-01AP552B1 AC220 - 230 full-wave rectifier input, alive time

Pulse motor valve (PMV) coil CAM-MD12TF-15 DC12 V

Compressor case thermostat US-622KXTMQO-SS OFF: 125±4°C ON: 90±5°C

Reactor CH-56 5.8 mH, 18.5 A PC board MCC-1571 Input 1Ø, AC220 - 230 V ± 10 %,

10 sec or less

50/60 Hz

HWS-1103H-E, 1403H-E

No. Component name Type name Rating

Compressor DA422A3F-25M

Outdoor fan motor (x2) ICF-280-A100-1 Output 100 W

Reactor (x2) CH-44 1.4 mH, 25 A

4-way valve coil AC220 - 230 V full-wave rectifier input, alive time 10 sec or less

Pulse motor valve (PMV) coil UKV-A038 DC12 V

Board MCC-1560 Input 3Ø, AC230 V±23 V, 50/60 Hz

Compressor case thermostat US-622KXTMQO-SS OFF = 125 ± 4 °C, ON = 90 ± 5 °C

PC board MCC-1571 Input 1Ø, AC220 - 230 V ± 10 %, 50/60 Hz

HWS-1103H8(R)-E, 1403H8(R)-E, 1603H8(R)-E

No. Component name Type name Rating

Compressor DA422A3F-27M

Outdoor fan motor (x2) ICF-280-A100-1 Output 100 W

Reactor CH-78 4.2 mH, 16 A

Reactor CH-68 18 mH, 5 A

4-way valve coil STF-01A5502E1 AC220 - 230 V

Pulse motor valve (PMV) coil UKV-A038 DC12 V

PC board (Compressor) MCC-1596

PC board (Fan motor drive) MCC-1597

PC board (Control) MCC-1599

PC board (Noise filter) MCC-1600

High pressure switch ACB-4UB83W OFF = 4.15 +0, -0.3 Mpa

Compressor case thermostat US-622 OFF = 125 ± 4 °C, ON = 90 ± 5 °C

Relay EL200/240 A2-F() Contact = AC480V, 20 A

6-3. Hot Water Cylinder Unit

Model name

1501

2101

No. Component name

Hot water cylinder heater Hot water cylinder temperature

sensor (TTW sensor)

Thermal cut-out

O·········Applied

CSH M3-E (-UK)

OOO

CSH M3-E (-UK)

3001

CSH M3-E (-UK)

Type name Rating

– AC230 V 2.75 KW

10 kΩ (25°C)

–

Operating temperature Manual reset 82°C (+3k/-2k)

6-4. Water Heat Exchange Control Board

HWS-803XWHM3-E, 803XWHT6-E, 803XWHD6-E, 803XWHT9-E HWS-1403XWHM3-E, 1403XWHT6-E, 1403XWHD6-E, 1403XWHT9-E

Option board

connector

CN208-CN211

Built-in pump

connector

CN603

Relay board connector CN501

TC sensor connector

Remote control

connector

CN41

CN203

TFI sensor connector CN213

TTW sensor connector CN214

Low pressure sensor connector CN207, CN212

THO sensor connector CN206

TWI sensor connector CN204

TWO sensor connector CN205 Pressure switch connector CN201 Overheat protection thermostat input connector CN202

Flow switch connector CN200

Transformer connector CN102

Hot water cylinder

drive connector

CN601

3WV drive connector CN602

Mixing valve drive connector CN604

Backup heater 1 drive connector CN605

Transformer input connector CN101

AC power supply connector CN100

Serial input connector CN305

Backup heater 2 drive connector CN606

6-5. Outdoor Control Board (Single phase Type)

HWS-803H-E

Reactor connection connecto

Power circuit protection

fuse

F100 (250 V, 3.15 A,

plastic case)

Case thermostat connector

CN609(Blue)

4-way valve connector

CN701(White)

Compressor ON

output connector

CN704(

Blue

)

Heater output connector

CN703(Grey)

External input connector

CN610(Yellow)

Special operation switches

SW801 SW804

Fan motor output CN300 (White)

Compressor output terminals

CN202 CN201 CN200

Electrolytic capacitors

Display change-over switches

SW800 SW803

Temperature sensor connectors

TL CN604(

TD CN603(

TO CN602(

TE CN601( TS CN600(

Alive, error display LEDs

D800 804(

Initialization switch

Hydro-outdoor communication signal LEDs

White

)

White

)

Yellow

)

White

)

White

)

Yellow

D805(

Green

PMV connector

CN710 (White)

SW802

D503 (Green, Outdoor => Hydro)

D502 (Amber, Hydro => Outdoor)

) )

4-way valve protection fuse F700 (250 V, 3.15 A, plastic case)

Connecting cable connector

CN04(White)

Connecting cable protection fuse

F03 (250 V, 10 A)

Power circuit protection fuse F01 (250V, 25A)

Power supply connection lead wires P01(Red) P02(White)

Earth lead wire

P09 (Black)

HWS-1103H-E, 1403H-E

Fan motor output (Lower) CN300(White)

Case thermostat connector CN609(Blue)

Power circuit protection fuse F100(250V,3.15A, plastic case)

4-way valve connector CN701(White)

Compressor ON output connector CN704(Blue)

Heator output connector CN703(Grey)

External input connector CN610(Yellow)

Special operation switches SW801 SW804

Display change-over switches SW800 SW803

Temperature sensor

connectors

TL CN604(White)

TD CN603(White)

TO CN602(Yellow)

TE CN601(White) TS CN600(White)

Alive, abnormal display LEDs D800 804(Yellow) D805(Green)

PMV connector CN710(White)

Initialization switch SW802

Hydro-outdoor communication

signal LEDs

D503 (Green, Outdoor =>Hydro)

D502 (Amber, Hydro => Outdoor)

Fan motor output (Upper) CN400(White)

4-way valve protection fuse F700(250V,3.15A plastic case)

Connecting cable connector CN04(White)

Connecting cable protection fuse F03(250V,10A)

Compressor output terminals CN202 CN201 CN200

Power supply connection lead wires P01(Red) P02(White) P03(Black)

Power supply protection fuses F01 (250V,25A)

Electrolytic capacitors

Earth lead wire P09(Black)

6-6. Outdoor Unit Control (3 phase type)

HWS-1103H8(R)-E, 1403H8(R)-E, 1603H8(R)-E MCC-1596 (Compressor IPDU)

CN851

(Red)

Connector for MCC-1597 (CN505)

CN101

(White)

Connector for MCC-1597 (CN502)

CN13

(Black)

Terminal for power relay

CN211

(Red)

Compressor output terminal

, CN212

(White)

, CN213

(Black)

CN19

(Yellow)

, CN20

Terminal for reactor CH78

(Yellow)

F02

Electric circuit protective fuse (500V, 31.5A)

CN12

(White)

Terminal for MCC-1600 (CN17)

F01

Electric circuit protective fuse (500V, 31.5A)

CN11

(Red)

Terminal for power relay

CN04

(Red)

Terminal for PTC thermistor

MCC-1597 (Fan Motor IPDU)

CN750

(White)

Fan motor output (Upper side)

CN700

(Blue)

Fan motor output (Lower side)

CN500

(Red)

Connector for MCC-1600 (CN23) and reactor CH68

CN504

(Blue)

Connector for MCC-1599 (CN802)

P501

(Black)

Lead wire for grounding

CN602

(Black)

Connector for MCC-1600 (CN51)

CN505

(Red)

Connector for MCC-1596 (CN851)

F500

Electric circuit protective fuse (250V, 15A)

CN502

(White)

Connector for MCC-1596 (CN101)

MCC-1599 (Interface (CDB))

CN708

(Blue)

Connector for power relay coil

CN02

Connector for MCC-1600 (CN10 and CN19)

(Red)

CN608

(White)

Connector for MCC-1600 (CN50)

CN802

Connector for MCC-1597 (CN504)

(White)

CN703

(Gray)

Heater output connector

CN700

(Yellow)

4-way valve connector

CN690

(Green)

High-pressure switch connector

CN704

(Blue)

Compressor ON out put connector

F01

Power supply protective fuse (250V, 3.15A)

CN609

(Blue)

Case thermostat connector

CN610

Outside input connector

(Yellow)

CN710

(White)

PMV1 Connector

Temp.sensor connector

CN604

Specific operation switch

SW804 SW805 SW806

Display select switch

SW803

Initial setting switch

Power-ON,error display LED

Hydro/Outdoor communication signal LED

CN01

(White)

Inter-unit cable connector

(White) TL sensor

CN603

(White) TD sensor

CN602

(Yellow) TO sensor

CN601

(White) TE sensor

CN600

(White) TS sensor

SW801

SW800

SW802

D800

D804

D805

(Green)

D503

(Green), (Outdoor Hydro)

D502

(Orange), (Hydro Outdoor)

(Yellow)

→

MCC-1600 (Noise Filter)

CN05

(Red)

ower supply terminal (L1)

F01

aristor protective fuse

(250V, 6.3A)

CN06

(White)

ower supply terminal (L2)

F02

aristor protective fuse

(250V, 6.3A)

CN07

(Black)

ower supply terminal (L3)

F03

aristor protective fuse

(250V, 6.3A)

CN20

(White)

ower supply terminal (L2)

CN08

(Gray)

eutral terminal

CN10

(Red)

erminal for MCC-1599 (CN02) and Terminal for PTC thermistor

CN16

(Red)

erminal for power relay

CN17

(White)

erminal for

MCC-1596 (CN02)

CN18

(Black)

erminal for

power relay

CN19

(Gray)

erminal for

MCC-1599 (CN02)

CN09

(Brown)

erminal for

grounding

CN23

(Red)

onnector for

MCC-1597 (CN500)

CN51

(Black)

onnector for

MCC-1597 (CN602)

CN50

(White)

onnector for

MCC-1599 (CN608)

7 Refrigeration Cycle / Water System Diagram

7-1. Water System Diagram

Fan coil unit

zone1

Boiler

(local)

Booster heater

(local)

By-pass valve

Safety valve

set : 3.5bar

(locally procured)

Motorized 3-way valve

AC230V

(locally procured)

Radiator unit

2-way valve for

cooling mode

(locally procured)

AC230V

Strainer

40 mesh

(locally procured)

By-pass valve

(locally procured)

Drain cock for water charge

Moterized mixing valve

zone2

90°C

10 bar

Relief valve(UK)

AC230V

(locally procured)

AC pump

(locally procured)

1 : 2.75kW Ø

Cylinder heater

TFI

Floor

heating

Buffer tank(locally procured)

set : 3bar

Pressure relief valve

Air vent valve

set : 1bar

Expansion vessel

THO

AC pump

max : 10bar

(auto)

set : 75 ± 3°C

Thermal protector

set : 95 ± 5°C

Single operation

Thermal protector

Menometer

gage : - 6bar

TWO

Pressure switch

4.15MPa

Water vent

valve

Backup heater

TWI

Flow sw

1 : 3kWØ3 : 6kWØ3 : 9kW Ø

Low pressure sensor

max : 10bar

Water heat exchanger

Water outlet

Pressure relief

Set value : 7bar(UK)

TTW

(manual reset)

82°C (+3k/ -2k)

Thermal cut-out

8~16kW

Outdoor unit

Reducing

(3 place)

(Single phase)

Hot water cylinder

Water inlet

3.5bar

valve(UK)

Local hot water system

Installation example of water circuit

(1) (2)

(3) (4)

(5) (6)

The water flowing for a system without buffer tank ((1), (2), (3), (5)) requires17.5 /min (803XWH 13.0 /min) or more. This water flowing requires 5 or more branches of Floor heating or Radiator etc.

Less than 5 branches may cause a flow deficien cy. In this case, please provide a buffer tank and secondary pumps as shown in (4). Please check how to install the boiler (See page 52)

7-2. Refrigeration Cycle System Diagram

HWS-803XWHM3-E, HWS-803XWHT6-E, HWS-803XWHD6-E, HWS-803XWHT9-E/HWS803H-E

Heating / Hot-water supply Defrosting / Cooling

Compressor (DA220A2F-22L)

Accumulator (1800 cc)

Outdoor unit

4-way valve (STF-218G)

Outdoor heat exchanger

Pulse motor valve (CAM-B30YGTF-2)

Low pressure sensor

Pressure switch

Plate-type water heat exchanger

Hydro unit

Expansion vessel

TWO

TWI

Manometer

Air vent valve

Backup heater

Safety valve

Circulating pump (UPS025-65 K 130)

THO

Flow switch (VH-8706)

Water vent valve

Refrigerant R410A ... 1.8 kg

HWS-1403XWHM3-E, HWS-1403XWHT6-E, HWS-1403XWHD6-E, HWS-1403XWHT9-E/ HWS-1103H-E, HWS-1403H-E

Heating / Hot-water supply Defrosting / Cooling

Compressor (DA422A3F-25M)

Accumulator (2500 cc)

Outdoor unit

4-way valve (STF-0401G)

Outdoor heat exchanger

Pulse motor valve (UKV-25D100)

Pressure switch

Plate-type water heat exchanger

Low pressure sensor

Hydro unit

Expansion vessel

TWO

TWI

Manometer

Air vent valve

Backup heater

Safety valve

Circulating pump (UPS25-80 130)

THO

Flow switch (VH-8705)

Water vent valve

HWS-1403XWHM3-E, HWS-1403XWHT6-E, HWS-1403XWHD6-E, HWS-1403XWHT9-E/ HWS-1103H8(R)-E, HWS-1403H8(R)-E, HWS-1603H8(R)-E

Heating / Hot-water supply Defrosting / Cooling

Muffler Ø25 x L210 Ø25 x L180

Compressor (DA422A3F-27M)

Accumulator (2500 cc)

Outdoor unit

Pressure switch

4-way valve (STF-0401G)

Outdoor heat exchanger

Pulse motor valve (UKV-25D100)

Low pressure sensor

Pressure switch

Plate-type water heat exchanger

Hydro unit

Expansion vessel

TWO

TWI

Manometer

Air vent valve

Backup heater

Safety valve

Circulating pump (UPS25-80 130)

THO

Flow switch (VH-8705)

Water vent valve

8 Operational Description

This chapter describes the working circuit and control of Air to Water Heat Pump about the following operations.

8-1

8-2

8-3

8-4

Item

8-1. Basic Operation

1) Operation control

2) Hot water supply operation

3) Heating operation

4) Cooling operation

8-2. Operation Mode and Control Method

1) Heat pump operation range of hot water supply, heating and cooling

2) Hot water supply operation

3) Heating operation

4) Cooling operation

5) Simultaneous operations of "hot water supply" and "heating"

6) Simultaneous operations of "hot water supply" and "cooling"

7) Boiler control

8) Hot water boost operation

9) Anti bacteria (ANTI BACTERIA) operation

10) Night set back (NIGHT SET BACK) operation

11) FROST PROTECTION operation

12) AUTO operation

13) Night time low-noise operation

8-3. Hydro Unit Control

1) Capacity control (compressor, high-temperature release, low-temperature release)

2) Heater control

3) Circulation pump control

4) Control by the flow switch

5) Mixing Valve control (2-temperature heating control)

6) Room temperature control

7) Room temperature control w ith th e th e r m o s ta t

8) Control of force stop and restart

9) Control of limit of heat pump operation

10)Output signal control 1

11)Output signal control 2

12) Q-H characteristics of hydro unit

13) Automatic restart control

14) Piping freeze prevention control

15) High return water protect control.

8-4. Outdoor unit control

1) PMV (Pulse motor valve) control

2) Discharge temperature release control

3) Current release control

4) Current releases shift control

5) Outdoor fan control

6) Defrosting control

7) Winding heating control

8) Short circuit operation prevention control

9) Over current protection control

10) High pressure release control

11) High pressure switch

12) Compressor case thermostat

13) Bottom plate heater control

Page

44 to 46

47 to 57

58 to 71

72 to 80

Item Operation flow and applicable data, etc. Operation description

8-1. Basic Operation

1) Operation control Remote controller

Operation condition selection

Heating: Run/Stop Hot water supply: Run/Stop Cooling: Run/Stop

Serial signals transmit

and receive

Hydro unit

Serial signals

transmit and receive

2WV_W 3WV_W

Hot water supply heater MG

Mixing Valve

Pressure switch

Lo pressure sensor

Remote control settings <Heating> Temperature setting <Hot water supply > Temperature setting <Cooling> Temperature setting

Auto Temp Anti Bacteria Frost protection Hot waterboost

AC 230 V for Hot water cylinder heater AC 400 V (3N~) for Back up heater

Thermostat (Cooling/Heating)

Forcible stop input

Water heat exchange Sub board

Error Alarm stop output Defrosting output Operation output Boiler "ON/OFF" Booster Heater

Condensed temperature sensor (TC) Water inlet temperature sensor (TWI) Water outlet temperature sensor (TWO) Water heater outlet temperature sensor (THO)

Water heat exchange control board

Hot water cylinder Floor inlet sensor (TFI) Overheat prevention thermostat Flow switch

sensor

(TTW)

1. Purpose The operations of the hydro unit and the outdoor unit are controlled according to user-defined operation condition settings.

2. Details The operation controls include those shown on the left.

3. Operations

1)An operation condition is selected with the remote controller.

2)Setting the remote controller button to “ON” transmits a signal to the hydro unit.

3)The hydro unit controller controls the operations shown on the left while also controlling the water 2way valve, water 3-way valve, circulation pump, mixing valve, hot water cylinder heater, and backup heater.

4)The hydro unit controller transmits an operation instruction to the outdoor unit, and uses serial signals to transmit and receive control statuses.

5)The outdoor unit control unit performs the operation controls shown on the left while also controlling the compressor, outdoor fan motor, pulse motor valve, and 4-way valve.

Hot water cylinder heater Backup heater 1 power-relay

Serial signals

transmit and receive

Backup heater 2 power-relay

AC pump 1 (Built-in pump)

Outdoor unit

transmit and receive

Serial communication

Serial signals

Outdoor

unit control

AC 220 - 230 V for heat pump (Single phase type) AC 380 - 400V for heat pump (3 phase type)

Outdoor unit contro Inverter frequency control

Inverter

Waveform synthesis function

Calculation function (Temperature calculation)

AD conversion function Rapid heating function Compressor restart Delay function

G-Tr overcurrent prevention function

Defrosting operation function

Td sensor Ts sensor Te sensor To sensor PMV 4-way valve

High pressure switch (3 phase type only)

Compressor Outdoor fan motor

Item Operation flow and applicable data, etc. Operation description

8-1. Basic Operation

2) Hot water supply operation Hot water supply operation

[HOT WATER]

button set to "ON"

Hydro unit

control

Hot water temperature: 40°C to 75°C

Circulation pump "ON/OFF" control Water 3-way valve control Hot water cylinder heater control

Operation instruction

signal transmit

Number of compressor revolutions control

Outdoor unit

control

Number of outdoor fan motor revolutions control Pulse motor valve control 4-way valve control

3) Heating operation Heating operation

ZONE1, 2

button set to "ON"

Heating temperature: 20°C to 55°C

Circulation pump "ON/OFF" control

Hydro unit

control

Water 3-way valve control Water 2-way valve control Mixing Valve control Backup heater control

Operation instruction

Booster heater control

signal transmit

Number of compressor revolutions control

Outdoor unit

control

Number of outdoor fan motor revolutions control Pulse motor valve control 4-way valve control

Set temperature

(TSC_F)

[°C]

A(40)

B(35) C(30) D(25)

E(20)

T1-20

A, B, C, D, E Setting available range 20 to 55°C T1 Setting available range -15 to 0°C T3 Setting available range 0 to +15°C

T3 20

1. Purpose Hot water supply

2. Details This section performs hot water supply operation according to heating conditions specified for the steps on the left.

3. Operations

1)Set the [HOT WATER] remote controller button to “ON”.

2)The hydro unit controller starts to transmit a hot water supply operation signal to the outdoor unit control unit.

3)The hydro unit performs the operation controls shown on the left while also controlling the circulation pump, hot water cylinder heater “3WV”.

4)The outdoor unit controls the compressor, outdoor fan motor, electric expansion valve, and 4-way valve based on the operation signals transmitted by the hydro unit.

1. Purpose Heating

2. Details This section performs heating operation according to heating conditions specified for the steps on the left.

3. Operations

1)Set the [ZONE1, 2] remote controller button to “ON”.

2)The hydro unit controller starts to transmit a heating operation signal to the outdoor control unit.

3)The hydro unit performs the operation controls shown on the left while also controlling the circulation pump, backup booster heater “ON/OFF”, water 2way valve, and water 3way valve.

4)The outdoor unit controls the compressor, outdoor fan motor, electric expansion valve, and 4-way valve based on the operation signals transmitted by the hydro unit.

Item Operation flow and applicable data, etc. Operation description

8-1. Basic Operation

4) Cooling operation

ZONE1, 2

button set to "ON"

Hydro unit

control

Cooling temperature: 10°C to 25°C

Circulation pump "ON/OFF" control Water 3-way valve control Water 2-way valve control

Operation instruction

signal transmit

Number of compressor revolutions control

Outdoor unit

control

Number of outdoor fan motor revolutions control Pulse motor valve control 4-way valve control

NOTE:

No coding mode in default setting. When use the cooling mode, please change the FC02 to “0”.

Related FC

FC No. Setting item Default Setting available range

02 Cooling mode availability 1: No 0: Yes

1. Purpose Cooling

2. Details This section performs cooling operation according to cooling conditions specified for the steps on the left.

3. Operations

1)Set the [ZONE1, 2] remote controller button to “ON”.

2)The hydro unit controller starts to transmit a cooling operation signal to the outdoor unit control unit.

3)The hydro unit controller performs the operation controls shown on the left while also controlling the circulation pump, water 2-way valve, and water 3-way valve.

4)The outdoor unit controls the compressor, outdoor fan motor, pulse motor valve, and 4-way valve based on the operation signals transmitted by the hydro unit.

Item Operation flow and applicable data, etc.

8-2. Operation Mode and Control Method

1) Heat pump operation range of hot water supply, heating and cooling The heat pump operation range of hot water supply, heating and cooling is shown on the figures below.

1)HWS-803XWH**-E

43 42 41 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10

9 8 7 6 5 4 3 2 1 0

-1

-2

-3

-4

-5

-6

-7

-8

-9

-10

-11

-12

-13

-14

-15

-16

-17

-18

-19

-20

567891011121314151617181920212223242526272829303132333435363738394041424344454647484950

Cooling operation range

Heat pump operation range of how water supply and heating Freeze determination is executed only once.

Heat pump operation range of how water supply and heating.

(Conditional operation range) Start condition: The compressor stops for less than 2 hours and TD>50°C.

Heater for heating

Heating thermostat OFF

Water temperature at inlet (TWI)

2)HWS-1103XWH**-E, 1403XWH**-E, 1603XWH**-E

43 42 41 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10

9 8 7 6 5 4 3 2 1 0

-1

-2

-3

-4

-5

-6

-7

-8

-9

-10

-11

-12

-13

-14

-15

-16

-17

-18

-19

-20

5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50

Cooling operation range

Heat pump operation range of how water supply and heating Freeze determination is executed only once.

Heat pump operation range of how water supply and heating

(Conditional operation range) Start condition: The compressor stops for less than 2 hours and TD>40°C.

Heater for heating

Water temperature at inlet (TWI)

Heating thermostat OFF

Item Operation flow and applicable data, etc.

8-2. Operation Mode and Control Method

The following shows the operation modes and controlled objects.

Operation

mode

Cooling

Controlled object

Heat pump O O O O × × O O × × O Backup

heater Hot water

cylinder heater

Heating

only

ЧOЧOЧЧЧЧЧЧЧ

××O×O×O×O×O

Hot

water

supply

only

Heating and Hot water both operate Cooling and Hot water both operate

Hot

side

Heat pump select

for hot water

supply

Heating

side

Heat pump select

for heating

Heating

side

water

supply

2) Hot water supply operation

1)Operation start condition When the [HOT WATER] remote controller button is pressed and the following operation start condition is met, the operation starts.

• TTW < 38°C is detected.

Hot

water

supply

side

Heat pump select

for cooling

Cooling

side

Hot

water

supply

side

Heat pump select

for hot water

supply

Cooling

side

Hot

water

supply

side

O Possible

× Not possible

2)Operation mode determination An operation mode is determined according to the temperature of TTW sensor.

TTW senso

• Heat pump operation selection *1 *2

• When TTW < 38°C (a zone in the right figure) is met, the heat

pump operation is selected.

(Hot water cylinder unit)

• Heater operation selection

When 45°C TTW < TSC_H (b zone in the right figure) is met, the heater operation is selected.

• Thermostat status "OFF" selection

TTW

When TTW TSC_H is met, the thermostat status "OFF" is selected.

3)Operation stop The operation stops in the following cases.

• The remote controller gives a stop instruction.

• TTW TSC_H is met.

*1:When the outside temperature is -20°C or below, the heater

operation is selected even if the TTW temperature falls into "a

(Temperature set with

remote controller)

HP_H OFF 45°C

HP_H ON 38°C

TSC_H

Thermostat OFF Heater operation

b Zone

Heat pump operation

a Zone

c Zone

zone".

*2:When "Hot water supply" and "Heating" are simultaneously in

operation, the heater operation may be selected depending on

TSC_H is hot water temperature set with remote controller

the outside air temperature.

Related FC

FC No. Setting item Default Setting available range

1E Upper limit of hot water supply temperature 75°C 60-80°C 1F Lower limit of hot water supply temperature 40°C 40-60°C 20 Heat pump start temperature 38°C 20-45°C 21 Heat pump end temperature 45°C 40-50°C 24 Outside air correction start temperature for hot water supply* 25 Outside air correction temperature for hot water supply*

0°C -20-10°C

3 degree 0 -15 degree

*3:When the outside temperature is 0°C or below, the boil-up temperature will be higher that setting temperature in hot

water supply mode.

Item Operation flow and applicable data, etc.

8-2. Operation Mode and Control Method

3) Heating operation <Operation only for ZONE1>

• This operation is enabled when DP_SW12_2 ZONE1 is set to "OFF" (default).

• The remote controller displays settings, and only the set temperature of can be changed. <Operation for ZONE1 and ZONE2 (2 temperatures control)>

• This operation is enabled when DP_SW12_2 ZONE1 is set to "OFF" (default) and DP_SW12_3 ZONE2 to "ON".

• The remote controller displays settings, and the set temperatures of can be changed.

• To set temperatures for and , use SELECT to switch between

and .

• For 2 zone temperatures control, the flow adjustment of MIXING VALVE controls the water temperature of . For details,

see the description on MIXING VALVE control in 8-3-5.

1)Operation start condition Pressing the [ZONE1, 2] button of remote controller starts a heating operation. *1 *2

2) Operation mode selection An operation mode is determined according to the temperature of TWI sensor.

• Heat pump operation selection *1 *2 When TWI < TSC_F (d zone in the right figure) is met, the heat pump operation is selected.

• Thermostat status "OFF" When TWI TSC_F (e zone in the right figure) is met, the thermostat status "OFF" is selected.

3)Operation stop condition When the following condition is met, the heating opera tion stops.

• The remote controller gives a stop instruction.

TWI

Thermostat off operation

TSC_F

Heat pump operation

TSC_F is a heating temperature set with remote controller

e zone

diff2K d zone

*1:When the outside temperature is -20°C or below, the heater

operation is selected even if the TWI temperature falls into "d zone".

*2:When "Hot water supply" and "Heating" are simultaneously in

operation, the heater operation may be selected depending on the outside air temperature.

Related FC

FC No. Setting item Default Setting available range

1A Upper limit of heating (Zone1) limited temperature 55 37-55°C 1B Lower limit of heating (Zone1) limited temperature 20 20-37°C 1C Upper limit of heating (Zone2) limited temperature 55 37-55°C 1D Lower limit of heating (Zone2) limited temperature 20 20-37°C

Item Operation flow and applicable data, etc.

8-2. Operation Mode and Control Method

4) Cooling operation Pressing the [ZONE1, 2] button and then [OPERATION MODE] starts a cooling operation.

1) Operation start condition Pressing the [ZONE1, 2] button and then [OPERATION MODE] starts a cooling operation.

2) Op

eration mode selection An operation mode is determined according to the temperature of TWI sensor.

• Heat pump operation selection *1 When TWI TSC_F (d zone in the right figure) is met, the heat pump operation is selected.

• Thermostat status "OFF" When TWI < TSC_F (e zone in the right figure) is met, the thermostat status "OFF" is selected.

3)Operation stop condition When either of the following conditions is met, th e cooli ng operation stops.

• The remote controller gives a stop instruction.

• The operation is switched to heating.

*1:When the outside temperature is 10°C or below, cooling does

not start even if the TWI temperature falls into "d zone".

Related FC

FC No. Setting item Default Setting available range

02 Cooling mode availability 1: Not permit 0: Permitted 18 Upper limit of cooling setting temperature 25 20-30°C 19 Lower limit of cooling setting temperature 10 10-20°C

TSC_F

(Temperature set with

remote controller)

TSC_F

TWI

Heat pump operation

d zone

TSC is a cooling temperature set with the remote controller

(cooling)

e zone

Thermostat off operation

Diff : 2k

5) Simultaneous operations of "hot water supply" and "heating" At the time of "Hot water supply" and "Heating" simultaneous operation, the operation mode is select as follows depending on the outside air temperature.

• f zone Operation with hot water supply priority A heat pump operation is performed in the hot water supply side, and a heating operation in the heating side.

• g zone Operation with heating priority A heat pump operation is performed in the heating side, and a cylinder heater operation in the hot water supply side.

(FC22)

-20

Hot water

supply heat

pump priority

operation

Heating heat

pump priority

operation

Heater operation

f zone

Diff : 5deg

g zone

Diff : 5deg

h zone *3

Operation mode by zone

Zone Hot water supply side Heating side

f Heat pump *2 Stop *2 g Heater Heat pump h Heater *3 Heater *3

*2:Note that after a heat pump operation for "Hot water supply" is selected in f zone, when the operation moves to a

heater operation for "hot water" and then 5 minutes has passed (Hot water supply operation in b zone), the operation mode changes as follows.

Zone Hot water supply side Heating side

f' Heater Heat pump

When TTW 45°C (FC: changeable) is met, the operation ends f' zone and returns to f zone. *3:If the h-zone operation starts while external temperature is higher than -20°C, the h-zone operation continues for 60

minutes.

Item Operation flow and applicable data, etc.

Related FC

FC No. Setting item Default Setting available range

Maximum HP operation time for hot water heater, when “hot

water supply” + “heating mode” both operate.

22 Priority mode switch temperature 0°C -20-20°C

* Note: When user selects “hot water supply” and “ZONE1,2”, and Heat pump selects hot water supply mode, the

Maximum operating time of heat pump is 30 min.

8-2. Operation Mode and Control Method

6) Simultaneous operations of "hot water supply" and "cooling" For simultaneous operations of "hot water supply" and "cooling", basically cooling runs by a heat pump operation, and hot water supply by a heater operation.

Hot water supply side Cooling side

Normal Heater * Heat pump *

* By setting FC_01 to “1”, heat pump ope ration for “hot water supply” is permitted. Under the setting, the heat pump

runs for the hot water supply side when TTW is less than 38°C.

Hot water supply side Cooling side

TTW<38°C Heat pump stop

The operation mode returns to normal when TTW become 45°C or more (FC: variable). Related FC

FC No. Setting item Default Setting available range

02 Cooling mode availability 1: Not permit 0: Permitted 0F Heat pump operation for hot water supply permitted/not

permitted

30 min 0-120min

0: Not permit 1:Permitted (Heat pump

may run for hot water

supply.)

Item Operation flow and applicable data, etc.

8-2. Operation Mode and Control Method

7) Boiler control The boiler assists the hot water supply operation and heating operation according to the boiler’s position.

7-1)Boiler setting

• TCB-PCIN3E optional P.C. board is required. Connect its connection cable to CN208 port on the PC board of the hydro unit.

• Setting DPSW on the hydro unit: DP_SW13_2=”ON/OFF” switches “Using boiler/Not using boiler (Default)”. Set the switch to “ON” when using the boiler.

• The temperature switching the boiler and heat pump: FC_23=-10°C (Default) See the next item. The boiler output becomes effective when the outside air temperature is -10°C or less.

• Boiler position setting: DP_SW02_1=”ON/OFF” must be switched in accordance with the boiler position from the 3-way valve; before the 3-way valve/after the 3-way valve and in the heating side (Default). When the switch is set to “ON”, the boiler runs in the hot water supply operations or heating operation. The action of the 3-way valve depends on heat pump’s action and the boiler follows their action. When the switch is set to “OFF”, the boiler runs in heating operation. Also, the boiler runs when the heat pump is running for hot water supply while heating and supplying hot water simultaneously.

• Priority setting between the boiler and hydro unit: FC_3E=”0/1” switches the running priority; hydro unit (Default)/ boiler. When FC_3E is set to “0” (Default), the hydro unit has priority, the boiler stops as temperature reaches the hydro unit’s temperature setting. When FC_3E is set to “1”, the boiler continues to run even after temperature reaches the hydro unit’s temperature setting. (The setting of FC_3E is effective during the HP+Boiler operation.)

• Coordination setting of the boiler and heat pump: when FC_5B=”0”, the boiler and heat pump runs simultaneously (Default). when FC_5B=”1”, only the boiler runs (however, if the external air temperature becomes the boiler-HP switching temperature or more within 60 minutes, the heater may run instead for up to 60 minutes.) when FC_5B=”2”, the heater runs.

*1:When FC_3E is set to “0” (Default), the hydro unit has priority, the boiler stops as temperature reaches the hydro

unit’s temperature setting. When FC_3E is set to “1”, the boiler continues to run even after temperature reaches the hydro unit’s temperature setting.

DP_SW02_1=“OFF”(The boiler is placed after the 3-way valve and in the heating side.)

Option

Boiler

Hydro

Outdoor unit

* Boiler & HP switching temp setting FC23= -10 ** Boiler control/functionality setting FC5B= 0 (HP+Boiler) *** Hot water & cooling priority setting (FC_0F=“1” hot water

priority is necessary.)

Buffer

Radiator

HEATING Boiler + HP*** HP HOT WATER HP HP

HEATING & HOT WATER

COOLING – HP (TO 10) COOLING & HOT

WATER

TO<=-10* -10*<TO

Boiler for heating HP for hot water or heating

HP for cooling Heater for hot water***

DP_SW02_1=“ON”(The boiler is placed before the 3-way valve.)

Outdoor

Hydro unit

Unit

* Boiler & HP switching temp setting FC23= -10 ** Boiler control/functionality setting FC5B= 0 (HP+Boiler) *** Hot water & cooling priority setting (FC_0F=“1” hot water

priority is necessary)

Buffer tank

Radiator

HEATING Boiler + HP** HP HOT WATER Boiler + HP** HP HEATING & HOT

WATER COOLING – HP (TO 10)

COOLING & HOT WATER

TO<=-10* -10*<TO

Boiler + HP** HP

HP for cooling Heater for hot water***

Item Operation flow and applicable data, etc.

8-2. Operation Mode and Control Method

7-2)Boiler-output control

• I zone: heat pump operation Normally the heat pump operation is executed in the zone.

• J zone: heat pump operation and boiler operation *1 In the zone, the heat pump + boiler operation (*2) is executed and the heater operation is executed in the hot-watersupply side.

Heat pump

I zone

Diff : 5

operation

-10

Heat pump &

J zone

boiler operation

*2:Operation mode is not changed with the outside temperature when an external signal to control the limit of heat

pump limit operation (see 3-9) is input.

7-3)Boiler output limit control The boiler power output is limited depending on the settings of boiler position (DPSW02_1) and FC62.

Boiler position

(DPSW02_1)

(After 3-way valve, heating side)

(Before 3-way valve)

(Activate/deactivate A02 error

FC62

detection)

0 TWI or TWO or THO<58°C 1 TWI or TWO or THO<58°C 0 TWI or TWO or THO<70°C 1No limit *1

Temperature range in which the boiler signal is output

(Detected temperature of TWI, TWO or THO)

7-4)A02 error detection while the boiler is running A02 error detection is deactivated depending on the settings of FC62 and whether the boiler is installed or not

(DPSW13_2).

Boiler is installed or not

(DPSW13_2)

(Not installed)

(Installed)

(Activate/deactivate A02

FC62

error detection)

0 TWI or TWO or THO 70°C (Beep) 1 TWI or TWO or THO 70°C (Beep) 0 TWI or TWO or THO 70°C (Beep) 1 No error detection *1 (No beep)

Temperature recognized as A02 error

(Detected temperature of TWI, TWO or

THO)

*1 If a user runs the boiler under the condition that no limit has been set, and hot water from the boiler has damaged parts

inside of the hydro unit, the user is fully responsible for the damage.

Related FC

FC No. Setting item Default Variable range

23 Boiler-heat pump switching temperature -10°C -20-20°C 3E Control priority between the hydro unit and boiler

(Control valid for operating heat pump mode)

5B Coordination of the boiler and heat pump 0: Boiler and Heat pump 1: Boiler only

62 Activate/deactivate A02 error detection 0: Activate 1: Deactivate

0: Hydro unit control Independent temperature

control for the hydro unit and boiler

2: Heater only

Item Operation flow and applicable data, etc.

8-2. Operation Mode and Control Method

8) Hot water boost operation A hot water boost operation heats the water quickly to the set temperature TSC_H = 75°C (FC_09).

1) How to operate

• When pressing the [HOT WATER BOOST] button after pressing the remote controller [HOT WATER] button, a heat pump operation in progress in the heating side switches to in the hot water side, and continues the operation regardless of the hot water supply start condition, TTW < 38°C. In addition, the hot water cylinder is immediately energized to start a Hot water supply operation under TSC_H = 75°C.

• A hot water boost operation returns to the usual operation after 60 minutes passed or reached 75°C.

• The remote controller display during a hot water boost operation is the same as the set temperature display of a usual Hot water supply operation.

• The usual set temperature change is used for changing the set temperature during a hot water boost operation. Change the BOOST set temperature with FC_09, if necessary.

HOT WATER button set to "ON"

HOT WATER BOOST button set to "ON"

Current heat pump

Heating side

operation

Hot water supply side

Switches to Hot water

supply operation

75°C hot water operation (FC_09)

60 minutes operating time (FC_08)

Usual operation

Related FC

FC No. Setting item Default Setting available range

09 HOT WATER BOOST set temperature 75°C 40-80°C 08 HOT WATER BOOST operation time 60 min 30-180 min

Every 10 min

Item Operation flow and applicable data, etc.

8-2. Operation Mode and Control Method

9) Anti bacteria (ANTI BACTERIA) operation An anti bacteria operation regularly performs a Hot water supply operation with the set temperature TSC_H = 75°C (can

be set with FC_0A).

1) How to operate

• Pressing the [HOT WATER] button and then the remote controller [ANTI BACTERIA] button changes the setting to TSC_H = 75°C at the set cycle and time (both can be set with the remote controller FC) to start ANTI BACTERIA operation.

• The first anti bacteria operation starts when press the [ANTI BACTERIA] button and starting time come.

• When the set temperature 75°C is reached after the ANTI BACTERIA operation started, the set temperature remains another 30 minutes (can be set with FC_0B).

• The priority zone determined by the outside temperature selects an operation, Hot water heat pump or hot water supply heater.

• The hot water heat pump operation, when selected, ignores the hot water supply start condition (TTW < 38°C) and forcibly performs a hot water operation.

• During ANTI BACTERIA operation (Forcible hot water operation at 75°C), the hot water set temperature display is not changed. If it is changed from the remote controller, the normal hot water set temperature will be changed.

HOT WATER button set to "ON"

ANTI BACTERIA button set to "ON"

Anti bacteria start time

75°C hot water supply operation

75°C hot water supply operation for 30 minutes

Usual hot water supply operation

(Set temperature: 40°C to 75°C)

Caution

• During a 75°C hot water supply operation with ANTI

BACTERIA, the remote controller does not display 75°C.

• Be careful not to burn yourself; Output water may be hotter

than that displayed on the remote controller.

Related FC

FC No. Setting item Default Setting available range

0A Anti bacteria set temperature 75°C 65-80°C 0B Anti bacteria holding time 30 min 0 - 60 min

Remote control OCAnti bacteria start time 22:00 0:00-22:00

Remote control ODAnti bacteria operation cycle 7 days Every day to 10 days

Item Operation flow and applicable data, etc.

8-2. Operation Mode and Control Method

10)Night set back (NIGHT SET BACK) operation A night set back operation performs heating at 5K lower and cooling at 5K higher temperatures against the remote

controller set temperature from the setting start time (22:00) to the end time (6:00) every day. Note) • Set the remote controller time before starting a NIGHT SET BACK operation.

• The set time can be changed with remote controller FC. (See page 114)

Related FC

FC No. Setting item Default Setting available range

Remote controllerOENight set back start Time setting 22:00 0:00-23:00

Remote controllerOFNight set back end Time setting 6:00 0:00-23:00

26 Night set back setting Temperature width 5 degree 3 -20 degree 58 Night set back setting activate 0. Zone 1 & 2 1. Zone 1 only

11)FROST PROTECTION operation A frost protection operation performs heating at the set temperature RSC_F = 15°C (FC).

1)How to operate

• Pressing the remote controller [ZONE1, 2] button and then the [FROST PROTECTION] button starts a heating

operation at the set temperature of 15°C.

• Pressing again the [FROST PROTECTION] button cancels the FROST PROTECTION operation.

• The remote controller displays "F" as the temperature during FROST PROTECTION.

• A set temperature change during a FROST PROTECTION operation cancels the operation.

2)Automatic stop of frost protection operation

• The operation period of frost protection can be set at FC 12 and 13 on the remote control.

Longest period available: 20 days and 23 hours

• By entering the operation period (day and hour) at FC 12 and 13 on the remote control and pressing the [Frost

Protection] button, the operation period is set and the frost protection operation will automatically be finished after the period has passed.

• The operation period setting (day and hour) is stored in the memory.

Related FC

FC No. Setting item Default Setting available range

3A FROST PROTECTION Yes / No 1: Yes 0: No

3B FROST PROTECTION Set temperature 15°C 10-20°C 12 (remote control) FROST running period (days) 0 0-20 days 13 (remote control) FROST running period (hours) 0 0-23hours

Item Operation flow and applicable data, etc.

8-2. Operation Mode and Control Method

12)AUTO operation An auto operation sets the water temperature TSC_F depending on the outside air temperature TO by following the table below.

1) How to operate

• Pressing the remote controller [ZONE1, 2] button and then the [AUTO] button starts AUTO operation for heating. An operation starts at the set temperature of straight -line approximation for the following: water temperature 40°C with the outside temperature -20°C (FC), 35°C with -10 °C (T1)(FC), 30°C with 0°C (FC), 25°C with 10°C (T3), and 20°C with 20°C (TC).

• For 2-temperature control, although Auto-Curve in ZONE2 shows 80% of that of ZONE1 (FC), the water temperature setting does not fall below 20°C.

• During an AUTO operation, pressing again the [AUTO] button returns to the usual manual set heating operation.

• The remote controller displays "A" as the temperature during an AUTO operation. (When 2-temperature control is enabled, the remote controller displays "A".)

• Long-pressing the [AUTO] button during an AUTO operation activates the Auto-Curve FC change mode, enabling the set Auto-Curve water temperature to be shifted by ±5K range (FC_27). When using the auto curve shift function please note the maximum and minimum water temperature at 55°C and 20°C respectively.

• Even if the temperature setting is changed during an AUTO operation, the operation continues.

• An AUTO operation works with a heating operation only, not with a cooling or a hot water supply operation.

Auto-Curve ZONE1

40(A)

35(B) 30(C) 25(D)

20(E)

Auto-Curve ZONE2

-20

-10

(T1)

010

(T3)

Related FC

FC No. Setting item Default Setting available range

18 Upper limit of cooling set temperature 25°C 20-30°C 19 Lower limit of cooling set temperature 10°C 10-20°C 1A Upper limit of heating (ZONE1) set temperature 55°C 37-55°C 1B Lower limit of heating (ZONE1) set temperature 20°C 20-37°C 1C Upper limit of heating (ZONE2) set temperature 55°C 37-55°C 1D Lower limit of heating (ZONE2) set temperature 20°C 20-37°C 27 Set temperature shift with heating set to Auto 0 -5 to 5 k 29 Outside air temperature T1 temperature -10°C -15-0°C 2B Outside air temperature T3 temperature 10°C 0-15°C 2C Set temperature when out side air temperature is -20 °C. 40°C 20-55°C 2D Set temperature when out side air temperature is -10 °C (T1). 35°C 20-55°C 2E Set temperature when out side air temperature is 0 °C. 30°C 20-55°C 2F Set temperature when out side air t emperature is 10 °C (T3). 25°C 20-55°C 30 Set temperature when out side air temperature is 20 °C. 20°C 20-55°C 31 Auto-Curve ratio of ZONE2 80% 0-100%

13)Night time low-noise operation A night time low-noise operation reduces operation frequency and the number of outdoor fan rotations for a certain period

during night time as noise control for urban operation.

Maximum operation frequency 40.2 Hz (Hot water supply/ Heating/ Cooling)

Maximum fan tap 460 rpm (803H-E)

500 rpm (1103H-E, 1403H-E)

(1103H8(R)-E, 1403H8(R)-E, 1603H8(R)-E)

The night time low-noise operation is enabled/ disabled by changing the remote controller FC_09.

<How to set> - Refer to “11. Night time Low-noise Setting” on page 139.

1) Press the TEMP. and TEST button at the same time for 4 seconds or longer. (Shifted to the night time lownoise setting mode) The Code No. field displays "09", and the DATA "0000", , and being displayed blink.

2) Press TIME to set enable "1" or disable "0". Pressing SET change DATA and display to be lit and the setting is confirmed. (When "1" as enable is set, the night time low-noise setting is enabled, the control starts at the set start time.)

3) Press TEST to exit the night time low-noise time setting mode. The and goes out, returning to its original status.

Item Operation flow and applicable data, etc.

8-3. Hydro Unit Control

1) Capacity control (compressor, high-temperature release, low-temperature release)

This unit controls the compressor frequency and heater output so that the water outlet temperature matches the remote controller set temperature.

1-1)Compre ssor control

• Calculates the different between the remote controller set temperature (TSC_H, TSC_F) and the water outlet temperature (Hot water supply: THO, Heating: TWO).

• Sets the Hz signal correction amount that determines the number of compressor rotations by the temperature difference.

• Detects the number of compressor rotations.

• Compares the Hz signal correction amount and the current operation Hz, and changes the compressor output according to the difference.

* The control details are the same for hot water supply, heating, and cooling.

Remote controller

Temperature settings

(TSC_H, TSC_F)

TSC_H-THO for hot water supply

TSC_F-TWO

for heating/cooling

Hz signal correction

Number of compressor

rotation detection

Hz signal correction Operation Hz

Inverter output change

Number of compressor

rotation change

Hydro unit

Water outlet temperature

(THO, TWO)

Compressor frequency changeable range 10 Hz to 70 Hz (803, 1403H-E, 1603H8(R)-E)

10 Hz to 60 Hz (1103H-E, 1103H8(R)-E) 10 Hz to 66 Hz (1403H8(R)-E)

Item Operation flow and applicable data, etc.

8-3. Hydro Unit Control

1-2)High temperature release control

A heat pump operation is performed as shown in the table below according to the TC sensor detecting temperature.

• For the detected temperature, TC (= TWO + 2 degree) of a heat pump operation is used. The values of T7 through T10 varies depending on TWI. (See the table below)

• If the compressor frequency instruction from the hydro unit is less then 10 Hz, the compressor stops.

• TC > 62°C causes the compressor to stop abnormally. When the compressor restarts 140 seconds after the stop and TC > 62°C is not detected for 20 minutes, the abnormal stop counter is cleared. 10 times of compressor abnormal stop stops the operation of heat pump, and fault code A11 is displayed on the remote controller.

* If the heat pump operation is switched to other operation, the abnormality detection counter is reset to 0.

TC (TWO+2)

T11

(62.0°C)

T10

T9 T8

R1 (slow up)

Forcible stop O (down)

P (slow down) Q (keep) R2 (slow up)

S (normal)

Zone Control operation

R1 Increase compressor frequency by 1.2 Hz every

60 sec.

R2 Increase compressor frequency by 0.6 Hz every

60 sec.

O Decrease compressor frequency to 70% every

10 sec.

P Decrease compressor frequency by 3 Hz every

10 sec.

Q Keep compressor frequency.

TC=TWO+2degree (°C)

TWI T7T8T9T10T11

TWI<30 57.0 59.0 60.0 61.0 62.0 30 TWI<35 57.0 59.0 60.0 61.0 62.0 35 TWI<40 56.5 58.5 59.5 60.5 62.0 40 TWI<45 56.5 58.5 59.5 60.5 62.0 45 TWI<50 56.0 58.0 59.0 60.0 62.0

50 TWI 56.0 58.0 59.0 60.0 62.0

1-3)Low temperature release control

A heat pump operation is performed as shown in the table below according to the TC sensor detecting temperature.

• For the detected temperature, TC = TWO of a heat pump operation is used. The values of T7 through T10 varies depending on TWI. (See the table below)

• If the compressor frequency instruction from the hydro unit is less then 10 Hz, the compressor stops.

• TC < 3°C causes the compressor to stop abnormally. When the compressor restarts when 140 seconds has passed after the stop and TC < 3°C is not detected for 20 minutes, the abnormal stop counter is cleared. 10 times of compressor abnormal stop stops the operation of heat pump, and fault code A11 is displayed on the remote controller.

* If the heat pump operation is switched to other operation, the abnormality detection counter is reset to 0.

TC (TWO)

S (normal)

T7 T8

T10

R1 (slow up)

R2 (slow up) Q (keep)

P (slow down) O (down)

T11

Forcible stop

TC=TWO (°C)

TWI T7T8T9T10T11

TWI<10 10.0 8.0 6.0 4.0 3.0 10 TWI<15 10.5 8.5 6.5 4.5 3.0 15 TWI<20 11.0 9.0 7.0 5.0 3.0

20 TWI 11.5 9.5 7.5 5.5 3.0

Zone Control operation

R1 Increase compressor frequency by 1.2 Hz every

60 sec.

R2 Increase compressor frequency by 0.6 Hz every

60 sec.

O Decrease compressor frequency to 70% every

10 sec.

P Decrease compressor frequency by 3 Hz every

10 sec.

Q Keep compressor frequency.

Item Operation flow and applicable data, etc.

)

8-3. Hydro Unit Control

2) Heater control 2-1) Hot water supply operation

During a hot water heat pump operation, the unit energizes the hot water cylinder heater (2.75 kW) when all the following conditions are met. Note that when the hot water supply set temperature (TSC_F) is reached, the unit stops energizing the heater.

• When 30 minutes has passed after the hot water heat pump operation started.

• The water inlet temperature (TWI) reaches 50°C.

• The hot water cylinder sensor reaches the HP_OFF temperature (45°C-FC).

• The HP_ON temperature (38°C-FC) is reached without the hot water HP status.

• HOT WATER BOOST operation is in progress.

TTW

Z zone

Y zone Heater off

TSC_H

Heat pump_OFF(45)

2-2)Heating operation

1)Heater control at the time of heat pump operation

• Object to be controlled: Backup heater The backup heater control starts when 13 minutes has passed after the heating heat pump operation started and select the ZONE (A-D). The backup heater control increases, decreases, or maintains the number of heaters every 10 minutes (FC) depending on the difference between the heating set temperature (TSC_F) and the heater outlet temperature (THO). When the heating set temperature (TSC_F) is reached, the hydro stops energizing the backup heater.

THO

E zone

D zone

TSC_F-0

(+2)

C zone

TSC_F-2

B zone

TSC_F-4

A zone

X zone Heater on

(Heater on without hot water heat pump)

Abnormality detection (A02 displayed)

Abnormality detection (A03 displayed

Hot Water Boost Heater on only with Hot Water Boost in operation

Heat pump_ON (38°C) (Hot water heat pump)

Diff : 2K

Heater off

Heater output down every 5, 10, 15, or 20 minutes

Diff : 2K

KEEP

Diff : 2K

Heater output up every 10, 20, 30, or 40 minutes

Diff : 2K

TSC_H-4

*1 HWS-803H-E only

Status Heater ON / OFF

Heater 1 Backup heater 3 kW = ON Heater 2 Backup heater 9 kW = ON

The single-phase model of 3 kW has the backup heater 1 only. The three-phase model of 6 kW has heater 1+2 of 6 kW.

Item Operation flow and applicable data, etc.

8-3. Hydro Unit Control

2)Control at the time of heating heater operation

• Controlled Object: Backup heater, Booster heater The backup heater control starts when 13 minutes has passed after the heating heat pump operation started. The backup heater control increases, decreases, or maintains the number of heaters every 10 minutes (FC) depending on the difference between the heating set temperature (TSC_F) and the heater outlet temperature (THO). Note that when the heating set temperature (TSC_F) is reached, the unit stops energizing the heater.

THO

E zone

D zone

TSC_F+2

C zone

Abnormality detection

Diff : 2K

Heater off

Heater output down every 5, 10, 15, or 20 minutes

TSC_F-0

B zone

TSC_F-2

A zone

Diff : 2K

KEEP

Diff : 2K

Heater output up every 10, 20, 30, or 40 minutes

Status Heater ON / OFF

Heater 1 Backup heater 3 kW = ON Heater 2 Backup heater 9 kW = ON Heater 3 Heater 2 + Booster heater

The single-phase model of 3 kW has the backup heater 1 only. The three-phase model of 6 kW has heater 1+2 of 6 kW. Booster heater operation come only output signal. (Booster heater activate under heater only mode)

Related FC

FC No. Setting item Default Setting available range

20 Hot water supply heat pump start temperature 38°C 20-45°C 21 Hot water supply heat pump stop temperature 45°C 40-50°C 33 Heater control of down time 1:10 min 0:5 min 2:15 mi n 3:20 min 34 Heater control of up time 0:10 min 1:20 min 2:30 min 3: 40 min

2-3)Heater control at the time of defrosting

• Object to be controlled: Backup heater When a defrosting operation starts during the heating heat pump operation, the unit energizes a backup heater (3 kW) according to the heater outlet temperature sensor (THO) and the set temperature (TSC_F) as follows.

TSC_F-β (β=2)

TSC_F-α (α=4)

THO

TSC_F

Heater off

Heater 1 Heater 1

1)When the heater outlet temperature sensor (THO) drops to the temperature of 2°C below the set temperature

Defrosting ends according to the usual heater control.

Status Heater ON / OFF

Heater 1 Backup heater 3 kW = ON

2-4)Forcible heater energization

To prevent freeze, the unit energizes or stops energizing a backup heater (3 kW) regardless of the unit status, not operated or in operation.

• Object to be controlled: Backup heater

1)Energization start condition: TWO < 4 or TWI < 4 or THO < 4

2)Energization stop condition: TWO 5 and TWI 5 and THO 5

Defrosting ends according to the usual heater control.

2-5)No heater operation

According to the DP_SW11 setting, the unit switches the energize/ not energize for the hot water cylinder, backup heater, and booster. For details, see 10-1.

(Caution)

All heater should be added to this Air to water system. The system has been designed to operate with all electrical heaters energized.

Item Operation flow and applicable data, etc.

8-3. Hydro Unit Control

3) Circulation pump control

One circulation pump (enhancing pump P2) can be connected to the unit in addition to t he built-in circ ulation pump P1. You can change the settings of the built-in pump P1 and the enhan cing pump P2 usin g DP_SW10-1, 2, and 3 in the hydro unit.

Item Operation Initial value DPSW

AC pump 01: Built-in pump P1’s action during how water supply operation:

HP operation only/Always energized

02: Built-in pump P1’s action during heating operation:

Always energized/Turned off when TO sensor detect over than 20°C.

03: Enhancing pump P2’s action:

Interlock/Non-interlock with the built-in pump P1

04: None

If the enhancing pump P2 is set to Non-interlock, the pump P1 is always energized.

3-1)Controlling the built-in circulation pump P1

Pump type: AC motor, rated voltage 230V, three-speed (changed manually) The pump operation starts under the condition below:

• When the [HOT WATER] or [ZONE1,2] button is pressed.

The pump operation stops under the condition below:

• When the [HOT WATER] or [ZONE1,2] button is pressed. (Operation will stop fully in about 1 minute.)

The pump operation stops/restarts under the conditions shown below.

• When changing operation modes, the pump stops for 30 seconds.

Boiler is installed or not

(DPSW13_2)

(Not installed)

(Installed)

Boiler position

(DPSW02_1)

0 (After 3-way valve, heating side) 70°C / 68°C

1 (Before 3-way valve) 70°C / 68°C

0 (After 3-way valve, heating side) 70°C / 68°C

1 (Before 3-way valve) 58°C / 55°C

Stop/restart temperatures

(TWI or TWO or THO)

OFF: HP operation only

OFF: Always energized

OFF: Interlock

P1 pump control

SW10-1

SW10-2

SW10-3

3-2)Controlling the built-in pump P1 during the hot water supply operation

You can change the action of the built-in pump P1 during the hot water supply operation using DP_SW10-1.

• DP_SW10-1 OFF(Default): The pump stops as the HP for hot water supply stops.

• DP_SW10-1 ON: The pump is always energized.

3-3)Controlling the built-in pump P1 during the heating operation

You can change the action of the built-in pump P1 during the heating operation using DP_SW10-2.

• DP_SW10-2 OFF(Default): The pump is always energized.

• DP_SW10-1 ON : The pump stops when To ≥ 20°C. (Practically the HP for heating is turned off.)

3-4)Enhancing circulation pump P2

Pump type: AC motor, rated voltage 230V, connectable directly up to 200W rated power output. You can select whether the pump P2 is interlocked with the pump P1 using DP_SW10-3. The pump P1 is always

energized if the pump P2 is not interlocked.

3-5)Controlling the enhancing pump P2

You can change the action of the enhancing pump P2 during cooling operation by setting FC64.

• FC64=”00”(Default): The pump is always energized.

• FC64=”01” : The pump is always stopped.

3-6)Controlling the built-in pump P1 during cooling operation controlled with the room temperature thermostat or room

temperature remote control. You can change the action of the built-in pump P1 by setting FC65.

• FC65=”00”(Default): The pump is always energized.

• FC65=”01” : The pump is stopped when the thermostat is turned off.

Related FC

FC No. Setting item Default Setting value

5A Control of the pump P1 during the hot water supply operation 0: Interlocked with HP 64 Control of the pump P2 during in cooling operation 0: Always ON 1: Always stopped

Control of the pump P1 while using the room temperature cont rol

or room temperature thermostat

9E Turn off the P1 when TO sensor detect over than this temperature 0: 20°C 10~30°C

0: Always ON

1: Always energized Equal to DPSW10-1

1: Stopped when the thermostat is OFF

Item Operation flow and applicable data, etc.

8-3. Hydro Unit Control

4) Control by the flow switch Whether water flows or not is judged with the ON/OFF of the flow switch.

Model Determined that water flows when: Determined that water does not flow when:

HWS-803**-E 13L or more water flows per minute Water less than 13L flows per minute HWS-1403**-E 18L or more water flows per minute Water less than 18L flows per minute

Without water-flow determination from the flow switch after the hot water supply operation, heating operation, or cooling operation, The HP, backup heater and booster heater are not energized. Similarly, The “A01” error indication flashes if the flow switch judged that water does not flow. The specification of the flow switch is the same in 803**-E and 1403**-E. The flow setting differs due to the specification of piping in the hydro unit.

5) Mixing Valve control (2-temperature heating control) To set different radiator unit supply temperatures or floor heating supply temperatures, the unit performs Mixing Valve

control. When Mixing Valve "Yes" is selected, the unit controls Mixing Valve every 4 minutes (FC) based on the difference TSC_Δ T between the Zone2 set temperature and TFI (floor inlet water temperature sensor) temperature as follows:

TSC_ΔT2 TSC_ΔT-2 TSC_ΔT < 2 -2 > TSC_ΔT

Control value + 1 step (Open) ± 0 step - 1 step (Close)

Initial value Driving range 1 step Control cycle

6 0-12 3 WV move 7.5 degrees 4 min (FC)

To enable 2 zone temperature control switch DP_SW12-3 to ON.

NOTE:

The mixing valve will automatically be reset if 24 hours pass with the valve fully closed.

Related FC

FC No. Setting item Default Setting available range

0C Mixing Valve operation time 60 30 - 240 sec 59 Mixing Valve control time 4 1 - 30 min

6) Room temperature control

You can install a sub remote control (separately purchased) in a room to control room temperature.

6-1)Installing the sub remote control

• Wiring with the main unit (See the figure on the right) : After detaching the front

panel, connect the sub remote control to the right terminal on the main remote control, which is connected with the hydro unit. (No polarity)

• Place to install (inside a room): At the height of 100cm-150cm on a wall Opposite

to the radiator or fan coil installed No assignment when floor heating is used on the room.

Right terminal on the main remote control

6-2)Room temperature control settings

• Function code setting:FC_40="1"

• Setting of DPSW on the remote control :

Connecting terminal on the remote controller

DP_SW01,02=”ON”(DP_SW03,04=“OFF”)

DP_SW01,02=”ON” (DP_SW03,04=“OFF”)

Item Operation flow and applicable data, etc.

8-3. Hydro Unit Control

6-3)Control method

• The water temperature setting at starting operation is 40°C (FC_9D) at heating and 20°C (FC_96) at cooling.

• The target water outlet temperature is adjusted by 1deg every 30 minutes based on the TSC_rc, the temperature

setting on the remote control, and the room temperature (temperature indicated on the remote control: T_rc). The adjustable range of water temperature is set with FC18-1B.

• The temperature set on the remote control and actual room temperature may differ depending on the place of the

remote control or room space. In that case, adjust temperature detection using FC02 (for heating) and FC03 (for cooling) on the remote control.

Cooling operation

D zone

T_rc

Heating operation

Thermo off

TSC_rc+

TSC_rc-

A zone B zone C zone

D zone

TSC_rc+

=1.0 =0.5

C zone

Thermo off

=0.5

How to shift up/down the temperature by remote controller FC02, 03

• Setting temperature (remote controller) is higher than room temperature: example. 1deg

Change remote controller FC02, 03 = “-1K” to “-2K”

• Setting temperature (remote controller) is lower than room temperature: example. 1deg

Change remote controller FC02, 03 = “-1K” to “0”

T_rc

D zone

C zone No correction No correction

B zone

A zone Thermo off

Related FC

FC No. Setting item Default Variable range

02 (remote control) Room temperature correction (at heating) -1 -10K - +10K, 1K step 03 (remote control) Room temperature correction (at cooling) -1 -10K - +10K, 1K step

Correction control Heating Cooling Setting is corrected upward

Water temperature setting is up by 1deg every 30 minutes.

Setting is corrected downward. Water temperature setting is down by 1deg every 30 minutes.

18 Upper limit of cooling temperature setting 25 18-25°C 19 Lower limit of cooling temperature setting 10 10-18°C 1A Upper limit of heating temperature setting (Zone 1) 55 37-55°C 1B Lower limit of heating temperature setting (Zone 1) 20 20-37°C 40 Room temperature control 0 0:Not permitted 1:Permitted

Initial water temperature setting when controlling cooling by the room temperature remote control and room temperature thermostat

Initial water temperature setting when controlling heating by the room temperature remote control and room temperature thermostat

Setting is corrected upward Water temperature setting is down by 1deg every 30 minutes.

Setting is corrected downward. Water temperature setting is down by 1deg every 30 minutes.

20 10-25°C

40 20-55°C

B zone

A zone

7) Room temperature control with the thermostat You can install a commercially available thermostat to control room temperature.

7-1)Installing the room temperature thermostat

• TCB-PCM03E optional P.C. board is required. Connect its connection cable to CN211 port on the PC board of the

hydro unit.

• Wiring to the main unit: connect the optional p.c. board TCB-PCM03E to the hydro unit after detaching the front

panel. Thermostat for heating : Connect TCB-PCM03E between the terminals (1) and (3). Thermostat for cooling : Connect TCB-PCM03E between the terminals (2) and (3).

• Place to install (inside a room): At the height of 120cm-180cm on a wall

Opposite to the radiator or fan coil installed No assignment when floor heating is used on the room.

Item Operation flow and applicable data, etc.

8-3. Hydro Unit Control

7-2)Room temperature thermostat control setting

• Setting of DPSW on the hydro unit

TCB-PCMO3E

:DP_SW02_4=”ON”(Default“OFF”)

Terminal label

7-3)Heating thermostat operation

When the heating thermostat does not reach the assigned temperature (the circuit between (1) and (3) is closed), heating starts under the setting that water temperature for heating is 40°C. If the heating thermostat has not reached the assigned temperature 30 minutes after heating had started, the water temperature setting is turned up 1 degree, and the same action will be repeated every 30 minutes until the thermostat reaches the assigned temperature. The backup heater and booster heater are controlled in the same way as in the normal HP operation.

When the heating thermostat reaches the assigned temperature (the circuit between (1) and (3) is open), the heat

pump shifts to the “thermostat off” operation. During the operation, the water temperature setting is turned down by 1 degree every 30 minutes. The backup heater and booster heater are tuned off as the heat pump shifts to the “thermostat off” operation.

7-4)Cooling thermostat operation

When the cooling thermostat does not reach the assigned temperature (the circuit between (2) and (3) is open), cooling starts under the setting that water temperature fro cooling is 20°C. If the cooling thermostat has not reached the assigned temperature 30 minutes after cooling had started, the water temperature setting is turned down 1 degree, and the same action will be repeated every 30 minutes until the thermostat reaches the assigned temperature.

When the cooling thermostat reaches the assigned temperature (the circuit between (2) and (3) is closed), operation

shifts to the “thermostat off” operation. During the operation, the water temperature setting is turned up by 1 degree every 30 minutes.

PJ17

CN210 Red

CN211 Black

Room thermostat Correction control Heating operation Cooling operation

OPEN

Setting is corrected upward

Setting is corrected downward.

Thermo on The water temperature setting is turned up by 1 degree every 30 minutes.

Thermo off The water temperature setting is turned down by 1 degree every 30 minutes.

Thermo off The water temperature setting is turned up by 1 degree every 30 minutes.

Thermo on The water temperature setting is turned down by 1 degree every 30 minutes.

Item Operation flow and applicable data, etc.

8-3. Hydro Unit Control

8) Control of force stop and restart The unit can be stopped and restarted with external input. By setting FC52 and FC61, you can set an operation mode

to run/stop or can run/stop the unit in the mode assigned on the remote control.

• TCB-PCM03E optional P.C. board is required. Connect its connection cable to CN210 port on the PC board of the hydro unit.

8-1)Setting the control method

Select a control method by setting FC52.

• FC52=”0”:Stops ESTIA as the circuit between the terminals (1) and (3) is closed. (Default)

• FC52=”1”:Stops ESTIA as the circuit between the terminals (1) and (3) is opened.

• FC52=”24”: Starts ESTIA as the circuit between the terminals (1) and (3) is closed.

Stops ESTIA as the circuit between the terminals (1) and (3) is closed.

• FC52=”3”:Starts/Stops ESTIA as the circuit between the terminals (1) and (3) is received closed plus.

8-2)Setting the object to control

Select an operation mode by setting FC61.

• FC61=”0”:Hot water supply and heating (Default)

• FC61=”1”:Follows the setting on the remote control (If the hot water supply operation, heating operation, or hot water supply + heating operation is started manually after the unit was stopped with an external input, the new status is reflected to the setting on the remote control.)

• FC61=”2”:Hot water supply only

• FC61=”3”:Heating only

TCB-PCIN3E

Terminal label

PJ20

CN208 Blue

CN209 Green

8-3)Cautions

The circuit between the external input terminals (1) and (3) is also used to control the limit of heat pump operation. You cannot use the forced stop control when the circuit is configured to control the limit of heat pump operation. (See

page 68)

8-4)Setting example

• When you want to turn on/off the unit with static external input reflecting the operation setting on the remote control (hot water supply, heating, or hot water supply and heating). FC52=”2”, FC61=”1”

RC on condition RC off condition

Operation Heating × × status 1 Hot water × ×

Operation Heating status 2 Hot water

Operation Heating × × status 3 Hot water ×

FC61=1 & FC52=2

Operation pattern

↓

open signal input

×××× ××××

close signal input close signal input

↓

open signal input

↓

Manually ON/OFF change by remote controller

Operation Heating status 4 Hot water

×××× ××××

Item Operation flow and applicable data, etc.

Basic operation logic

There are 4 operation combination pattern for Heating & Hot water When open signal is input, the operation status change to the next status. For example, if current operation status is heating ON and hot water OFF, then next status to be heating OFF & hot water OFF when pulse is input Hydro unit memorize the status of the operation pattern before changing OFF status by close signal. If pulse is input at operation status 2, the operation pattern in the status 3 is same pattern in the status 1.

Manually ON/OFF

If customer change operation pattern manually by remote controller, change then operation pattern will not be same as the basic logic.

1. If customer stop operation ( He ating off and hot water off ) by the cont roller, then both heating& hot water are not to be ON with close or open signal

2. If the unit is stopped ( Heating off and hot water off ) by open sign al, operation pattern will be referre d to the pattern before the unit OFF by close signal.

• When you want to turn on/off with the pulse input reflecting the operation setting on the remote control (hot water supply, heating, or hot water supply and heating). FC52=”3”, FC61=”1”

RC on condition

× RC off condition

FC61=1 & FC52=3

Operation pattern Operation Heating × × status 1 Hot water × ×

↓

Pulse input

Operation Heating × × × status 2 Hot water × × ×

Manually ON/OFF change by remote controller

↓

Pulse input

Operation Heating status 3 Hot water × ×

↓

Operation Heating × × × status 4 Hot water × × ×

There are 4 operation combination pattern for Heating & Hot water When pulse signal is input, the operation status change to the next status. For example, if current operation status is heating ON and hot water OFF, then next status to be heating OFF & hot water OFF when pulse is input Hydro unit memorize the status of the operation pattern before changing OFF status by pulse signal. If pulse is input at operation status 2, the operation pattern in the status 3 is same pattern in the status 1.

If customer change operation pattern manually by remote controller, then operation pattern will not be same as the basic logic.

××

Pulse input

1. If customer stop operation ( He ating off and hot water off ) by the cont roller, then both heating& hot water to be ON with pulse input

2. If the unit is stopped ( Heating of f and hot water of f ) by pulse input, operation pattern wil l be referred to the pattern before the unit OFF by pulse.

Related FC

FC No. Setting item Default Setting value

52 Control method 0 0-3 (See 8-1.) 61 Object to control 0 0-3 (See 8-2.)

Item Operation flow and applicable data, etc.

9) Control of limit of heat pump operation When the peak period of electric power charge is set due to the contract or other conditions, you can limit heat pump

operation and give priority to boiler operation using an external input signal. (This control functions only during the period the signal is input.)

• TCB-PCM03E optional board is required. Connect its connection cable to CN210 port on the PC board of the hydro unit.

TCB-PCIN3E

PJ20

CN208 Blue

CN209

Terminal label

9-1)Setting the control method

Select an operation mode by setting FC61.

• FC61=”4”:Hot water cylinder heater=OFF, backup heater=OFF (Built-in pump is ON.)

• FC61=”5”:Hot water cylinder heater=OFF, backup heater=OFF, heat pump=OFF, Built-in pump is stopped.

9-2)Control summary

When the TEMPO signal is input (the circuit is closed), the boiler signal is output regardless the outside temperature and devices are turned off following the setting on FC61.

Green

1. Basic operation: heating operation using the boiler

2. Switching to hot water suppl y: the water circui t is switched to t he hot water supply sid e as the unit detec t that TTW is less than 38°C.

3. Switching to heating: the wate r circuit is switched to the heat ing side as the unit dete ct that TTW is 45°C or more, or 30 minutes has passed since operation started. Heating operation continues at least 30 minutes.

10)Output signal control 1

(TCB-PCIN3E optional P.C. board is required. Conn ect its connection cable to t he CN208 terminal on the P.C. board in the hydro unit.)

• The circuit between the terminals (1) and (2) gets closed as an error detection signal is output.

• The circuit between the terminals (3) and (4) gets closed as a boiler signal is output. The RED lamp on the P.C. board lights up when the signals are output.

11)Output signal control 2

(TCB-PCIN3E optional P.C. board is required. Conn ect its connection cable to t he CN209 terminal on the P.C. board in the hydro unit.)

< FC67=”0”: Default >

• The circuit between the terminals (1) and (2) is closed during defrosting.

• The circuit between the terminal (3) and (4) is closed while the compressor is running.

< FC67=”1” >

• The circuit between the terminals (1) and (2) gets closed as an error is detected.

• The circuit between the terminals (3) and (4) is closed during operation (when the remote control is ON) The RED lamp on the P.C. board lights up when the signals are output.

Related FC

FC No. Setting item Default Setting value

Changing the condition of optional

output (For the optional P.C. board connected to CN209)

TCB-PCIN3E

PJ20

Terminal label

0: 1-3 During defrosting 2-3 While compressor is running.

CN208 Blue

CN209 Green

1: 1-3 As error is detected 2-3 During operation

Item Operation flow and applicable data, etc.

12)Q-H characteristics of hydro unit

The following shows the Q-H characteristics.

12-1)HWS-803XWHM3-E, T6-E, D6-E, T9-E

Hydraulic heat exchanger(8kW)QH characteristics

Minimum flow rate

Pump head(m)

Out of

Operation Range

10 15 20 25 30

230V

220V

SW1

230V

220V

230V

220V

SW2

Flow rate(L/min)

12-2)HWS-1403XWHM3-E, T6-E, D6-E, T9-E

SW3

Hydraulic heat exchanger(14kW)QH characteristics

Minimum flow rate

9 8 7 6 5 4

Pump head(m)

Out of Operation Range

2 1 0

0 5 10 15 20

220V

SW1

25 30 35 40 45 50 55 60 65

Flow rate(L/min)

230V

220V

230V

SW2

230V

SW3

220V

Item Operation flow and applicable data, etc.

8-3. Hydro Unit Control

13)Automatic restart control

The unit records operation information before a power outage and retrieves the information a fter the power is restored to restart automatically the operation with the information.

13-1)Operation during remote controller

• The operation status before a power outage automatically restarts after the power is restored. (The merit functions are also enabled)

• Approximately 6 hours or more after a power outage The operation status before a power outage automatically restarts after the power is restored. But the merit functions (Night Set Back, Anti Bacteria) are disabled. The remote controller time displays "--:--". (The merit functions are disabled)

13-2)Operation during forcible automatic operation

A forcible automatic operation is performed when the power is restored after a power outage.

13-3) Operation during defrosting operation

When the power is restored after a power outage, the usual operation restarts. Note: The operation details recorded before a power outage

Operation mode: Hot water supply, Heating, Cooling, Hot water supply + Heating, Hot water supply + Cooling Set temperature: Hot water set temperature, Heating set temperature, Cooling set temperature

Merit function: Hot water supply operation (Anti Bacteria)

14)Piping freeze prevention control

Heating operation (Night Set Back)

This control operates when the power is on regardless the remote controller setting ON or OFF. To prevent frost bursting of the water piping for hot water supply and heating, the unit flows water with the circulation pump when the temperature sensor value falls below a certain temperature.

14-1)Piping freeze prevention control 1

1)Start condition: TWO < 4°C or THWI < 4°C.or THO < 4°C

2)End condition: TWO 5°C and TWI 5°C and THO 5°C

3)-1 How to operate (circulation pump)

• When the circulation pump is not in operation, if the sensor detects the freeze prevention control start temperature, the unit operate the circulation pump.

• During a freeze prevention operation, a heat pump operation does not start.

• When neither [HOT WATER] nor [ZONE1, 2] is in operation, if the end condition is not met when 3 minutes has passed after an operation starts, the unit performs the operation in 3)-2 to prevent freeze.

3)-2 How to operate (circulation pump + backup heater)

• When neither [HOT WATER] nor [ZONE1, 2] is in operation, if the end condition is not met when 3 minutes has passed after an operation starts.

• End condition: TWO 5°C and TWI 5°C and THO 5°C

• Heating with the set temperature 55°C operates.

3)-3 Abnormal stop

• If a freeze prevention operation continues for 30 minutes and does not meet the end condition, the operation stops as abnormal stop. (Remote controller check code: A05)

14-2)Piping freeze prevention control 2

TC and TWO activates freeze prevention regardless of a heat pump operation mode.

1)Determination condition: TWO>20°C, 2*TC+TWO<-12°C is continuously detected for 30 seconds or longer. Or TWO 20°C, TC+TWO<4°C is continuously detected for 30 seconds or longer.

2)Determination cancellation conditions

• The stop or operation mode is changed by the remote controller

• The mode is defrosting at the time of determination

At the next time of defrosting, the start condition is not met.

• The mode is other than defrosting at the time of determination

After cooling, heating, hot water heat pump restarts, the start condition is not met for 10 minutes.

3)Error display

• If freeze determination cancellation condition is not met, A04 error is displayed.

14-3)Piping freeze prevention control 3

This control applies only when defrosting is in operation.

1)Determination condition: During defrosting, TWI 15°C is continuously detected for 30 seconds or longer (After the stop, the unit restarts.)

2)Determination cancellation condition

• At the next time of defrosting, the start condition is not met.

3)Error display

• If freeze determination cancellation condition is not met, A04 error is displayed.

Item Operation flow and applicable data, etc.

8-3. Hydro Unit Control

14-4)Piping freeze prevention control 4

When the value of Ps sensor is low, freeze prevention is activated regardless of a heat pump operation mode.

1)Determination condition: Low pressure sensor detects PS < 0.2 MPa and 90 seconds passes (defrosting and

2)Determination cancellation condition

• After a restart, the start condition is not met for 30 minutes.

• At the next time of defrosting, the start condition is not met. (Defrosting operation for heating or hot water supply)

3)Error display

• If freeze determination cancellation condition is not met, A08 error is displayed.

15)High return water protect control.

cooling) (During a defrosting operation for cooling and heating, or hot water supply) Low pressure sensor detects PS < 0.2 MPa and 10 minutes passes (heating and hot water supply operation)

The hydro unit protects against high return water which made by separate boiler system.

TWI, TWO, THO

When A02 error appeared, the built-in pump will stop.

Related FC

FC No. Setting item Default Setting available range

62 Activate/deactivate A02 error detection 0: Activate 1: Deactivate

This FC62 function is valid when DP_SW13-2 is ON. (See 10.1-1. Setting switch names and positions)

A02 error detect

(Diff : 2K)

Heat pump stop

Heat pump normal operation

Item Operation flow and applicable data, etc.

8-4. Outdoor unit control

1) PMV (Pulse motor valve) control Valve opening is controlled using the expansion valve with a pulse motor according to a heat pump operation status.

• PMV is controlled between 30 and 500 pulses during an operation.

• At the time of a cooling operation, PMV is controlled with the usual target value of 1 to 4 K temperature difference between TS sensor and TC sensor.

• At the time of a hot water supply or heating operation, PMV is controlled with the usual target value of 2 to 4 K (for 803H-E) or -1 to 4 K (for 1103, 1403H-E) +1to 4 K (11 to 1603H8(R)-E) temperature difference between TS sensor and TE sensor.

• For both cooling and heating, if the cycle is overheated, PMV is controlled using the TD sensor.The usual target value is 91°C for a cooling operation, and 96°C for a heating operation.

* A defective sensor may cause liquid back flow or a bnormal overheat of the compressor, significantly shortening the

compressor life. If the compressor or other equipment is repaired, first check that the resistance of each sensor or the refrigerant cycle has no problem, then start the operation.

2) Discharge temperature release control This control detects an abnormality of the refrigerant cycle or compressor to perform failure prevention.

• This control reduces operation frequency if the PMV control does not lower the outlet temperature or if the outlet temperature rapidly rises. The frequency control is broken down to the unit of 0.6 Hz to stabilize the cycle.

• If the discharge temperature detects the abnormal stop zone, the compressor stops and then restarts after 150 seconds. The abnormality detection counter is cleared when the operation continues for 10 minutes. If detected 4 times, the error code is displayed and the compressor does not restart.

* An abnormality could occur due to too less refrigerant, PMV defective, or cycle stuck.

• For details about an error displayed, see the check code list.

TD [°C]

111

109

106

103

Abnormal stop

Frequency normal down

Frequency slow down

Frequency hold

Frequency slow up

(up to the point instructed)

As instructed

Item Operation flow and applicable data, etc.

8-4. Outdoor unit control

3) Current release control The number of compressor rotation is controlled so that current value of the compressor drive circuit does not exceed the

specified value.

• The outdoor unit detects the input current.

• The outside air temperature is detected and used to set the specified value of current.

• The number of compressor rotation instructed by the hydro unit is used to determine whether the current value exceeds the specified value.

• If exceeds, the number of compressor rotation is reduced to the most approximate number instructed by the hydro unit within the specified value range.

Outdoor unit current inverter

Outside air temperature (TO)

Main circuit control current

Current release point setting

Operation current Settings

Yes

Compressor operation Hz down

Current degradation

Capacity control continue

Heating, Hot water supply

Outside temperature

TO (degree °C)

35 TO 12.0 11.2

15 TO < 35 20.0 - (To - 15) × 0.4 13.2 - (To - 15) × 0.1

TO < 15 18.0 20.0 13.2

803H-E 1103H-E, 1403H-E 1103H8(R)E, 1403H8(R)E, 1603H8(R)E

Cooling

Outside temperature

TO (degree °C)

44 TO 9.5 15.0 47.0 7.5 7.5 39 TO < 44 13.0 17.7 7.5 8.7 9.6 10 TO < 39 16.0 20.0 9.6 9.6 9.6

803H-E 1103, 1403H-E 1103H8(R)-E 1403H8(R)-E 1603H8(R)-E

No cooling operation available for TO < 10°C.

Current release value (A)

Heating, Hot water supply

CT(A)

1103, 1403H-E

20.0

18.0

803H-E

12.0

11.2

1103 to 1603H8(R)-E

15 35 TO

Cooling

CT(A)

20.0

16.0

15.0

9.5

10 39 44

1103, 1403H-E

803H-E

CT(A)

9.6

8.7

7.5

10 44 47

1603H8(R)-E 1403H(R)-E 1103H8(R)-E

Item Operation flow and applicable data, etc.

8-4. Outdoor unit control

4) Current releases shift control During a cooling operation, this control prevents the electronic parts, such as a compressor drive element, and

compressor from failing.

• The current release control value (I) is selected from the following table according to the TO sensor value.

Current release control value (I)

Temperature range 803H-E 1103H-E 1403H-E

50°C TO 10.5 14.1 14.1 45°C TO < 50°C 10.5 14.1 14.1 39°C TO < 45°C 14.0 14.1 16.4

TO < 39°C 16.0 14.1 16.4

TO error 10.5 14.1 14.1

Temperature range 1103H8(R)-E 1403H8(R)-E 1603H8(R)-E

47°C TO 7.5 7.5 7.5 39°C TO < 47°C 7.5 8.7 9.6

10 TO < 39°C 9.6 9.6 9.6

TO error 7.5 7.5 7.5

5) Outdoor fan control The outdoor side control part controls the number of fan motor rotations by receiving an operation instruction from the

indoor side (Hydro unit) control part.

* Although the fan motor is a DC motor, which has non-step variable numbers of rotations, it is limited to some steps for convenience of

control.

The number of fan tap rotation allocation [rpm]

W1 W2 W3 W4 W5 W6 W7 W8

803H-E 200 230 260 300 340 380 420 460 1103,

1403H-E 1103 to 1603H8(R)-E

803H-E 520 570 600 630 670 710 740 1103,

1403H-E 1103 to 1603H8(R)-E

Upper 200 240 240 260 320 380 480 500 Lower 200 200 200 280 360 400 500 520

W9 WA WB WC WD WE WF

Upper 530 610 640 660 720 780 890 Lower 550 630 660 700 740 820 910

5-1)Cooling fan control

• The TL sensor, TO sensor and operation frequency control the outdoor fan. The control is performed by 1 tap of the DC fan control (14 taps).

• For 60 seconds after the start, the maximum fan tap for each zone that is shown in the following table is fixed. After that, the fan is controlled according to the TL sensor temperature.

TL [°C]

WE tap

+ 1 tap/20 secs (Up to the maximum number of rotation for each zone)

Number of rotation hold

- 1 tap/20 secs (Up to the minimum number of rotation for each zone)

Item Operation flow and applicable data, etc.

8-4. Outdoor unit control

HWS-803H-E

Temperature range

38°C TO W6 WC W8 WE WA WE 29°C TO < 38°C W5 WB W7 WD W9 WD 15°C TO < 29°C W4 W8 W6 WA W8 WC

5°C TO < 15°C W3 W6 W5 W8 W7 WA

0°C TO < 5°CW2W4W4W6W5W8

-4°C TO < 0°CW2W3W3W5W4W6 TO < -4°C OFF OFF OFF W2 OFF W3

TO error OFF WC OFF WE OFF WE

Less than 20 Hz

Minimum Maximum Minimum Maximum Minimum Maximum

20 Hz or more to less

than 45 Hz

HWS-1103H-E, 1403H-E

45 Hz or more

Temperature range

38°C TO W6 WC W8 WC WA WD 29°C TO < 38°C W5 WB W7 15°C TO < 29°C W4 W8 W6 WA W8 WC

5°C TO < 15°C W3 W6 W5 W8 W7 WA

0°C TO < 5°CW2W4W4W6W5W8

-4°C TO < 0°CW2W3W3W5W4W6 TO < -4°C W1 W2 W1 W4 W2 W6

TO error W1WCW1WCW2WD

Less than 20 Hz

Minimum Maximum Minimum Maximum Minimum Maximum

20 Hz or more to less

than 45 Hz

(WB for 1102)

45 Hz or more

W9 WC

HWS-1103H8(R)-E, 1403H8(R)-E, 1603H8(R)-E

Temperature range

38°C TO W6 WC W8 WD WA WD 29°C TO < 38°C W5 WB W7 15°C TO < 29°C W4 W8 W6 WA W8 WC

5°C TO < 15°C W3 W6 W5 W8 W7 WA

0°C TO < 5°CW2W4W4W6W5W8

-4°C TO < 0°CW2W3W3W5W4W6 TO < -4°C W1 W2 W1 W4 W2 W6

TO error W1WCW1WDW2WD

Less than 20 Hz

Minimum Maximum Minimum Maximum Minimum Maximum

20 Hz or more to less

than 45 Hz

(WB for 1103)

45 Hz or more

W9 WC

Item Operation flow and applicable data, etc.

8-4. Outdoor unit control

5-2)Hot water supply and heating fan control

1)The TE sensor, TO sensor and operation frequency control the outdoor fan. (The minimum W1 to the maximum are controlled according to the table below.)

2)For 3 minutes after the start, the maximum fan tap for each zone that is shown in the following table is fixed. After that, the fan is controlled according to the TE sensor temperature.

3)If TE 24°C continues for 5 minutes, the operation stops. No error code is displayed for this; the status is the same as the usual thermostat off. The operation restarts after 150 seconds. This intermittent running is not abnormal.

NOTE

It TO < -5°C and the heat-pump was thermo-off, the out-door fan motor (up/down) continue to run 10 mins with W3 rotation.

TE [°C]

-2 tap/20 secs (to W1) Stop time count

-2 tap/20 secs (to W1)

-1 tap/20 secs (to W1)

Number of revolutions hold

+ 1 tap/20 secs (Up to the maximum tap for each zone)

For 803H-E

Temperature range

10°C TO W7 W8 W9

5°C TO < 10°C W9 WB WD

-3°C TO < 5°C WD WD WE

-10°C TO < -3°C WE WE WE TO < -10°C WF WF WF

TO abnormal WF WF WF

Less than 20 Hz

Maximum Maximum Maximum

20 Hz or more to less

than 45 Hz

For 1103H-E

Temperature range

10°C TO W7 W8 W9

5°C TO < 10°C W9 WA WA

-3°C TO < 5°C WA WA WB

-10°C TO < -3°C WB WB WB TO < -10°C WD WD WD

TO abnormal WD WD WD

Less than 20 Hz

Maximum Maximum Maximum

20 Hz or more to less

than 45 Hz

For 1403H-E

Temperature range

10°C TO W7 W8 W9

5°C TO < 10°C W9 WA WB

-3°C TO < 5°C WB WB WC

-10°C TO < -3°C WC WC WC TO < -10°C WD WD WD

TO abnormal WD WD WD

Less than 20 Hz

Maximum Maximum Maximum

20 Hz or more to less

than 45 Hz

45 Hz or more

Item Operation flow and applicable data, etc.

For 1103H8(R)-E

Temperature range

10°C TO W7 W8 W9

5°C TO < 10°C W9 WA WA

-3°C TO < 5°C WA WA WC

-10°C TO < -3°C WC WC WC TO < -10°C WD WD WD

TO abnormal WD WD WD

Less than 20 Hz

Maximum Maximum Maximum

20 Hz or more to less

than 45 Hz

For 1403H8(R)-E, 1603H8(R)-E

Temperature range

10°C TO W7 W8 W9

5°C TO < 10°C W9 WA WB (WC)

-3°C TO < 5°C WB (WC) WB (WC) WC

-10°C TO < -3°C WC WC WC TO < -10°C WD WD WD

TO abnormal WD WD WD

Less than 20 Hz

Maximum Maximum Maximum

20 Hz or more to less

than 45 Hz

(1603H8-E, 1603H8R-E only)

45 Hz or more

Item Operation flow and applicable data, etc.

8-4. Outdoor unit control

6) Defrosting control This control defrosts the outdoor heat exchanger. The temperature sensor (TE sensor) of the outdoor heat exchanger

determines frost formation, and then defrosting is performed in the 4-way valve reverse defrosting method.

1)During a heating operation, defrosting is performed when the TE sensor meets any of the conditions in A through D zones.

2)During defrosting, when TE sensor maintains 12°C or higher for 3 seconds or 7°C TE < 12°C for a minute, the defrosting ends. Also, when defrosting continues for 10 minutes even if the TE sensor temperature is below 7°C, the defrosting ends.

3)After the defrosting, stop the compressor for approx. 40 seconds before starting a heating operation.

4)Switching the jumper "J805" and "J806" of the outdoor control board can change the time of d above mentioned. (Factory default: 150 minutes)

Heating operation starts

0 10 15 39 45 55 [d]

°C]

[

-2

-5

A zone

[min]

-10

B zone

-23

(-25)*

A Zone Maintain " (TEO - TE) - (ToO - To) 3°C" for 20 sec B Zone Maintain " (TEO - TE) - (ToO - To) 2°C" for 20 sec

C Zone D Zone Accumulate compressor operation status of TE < -2°C for 150 min

A Zone Maintain " TEO - TE 3°C" for 20 sec B Zone Maintain " TEO - TE 2°C" for 20 sec

C Zone D Zone Accumulate compressor operation status of TE < -2°C for 150 min

C zone

To Normal

Maintain " TE -23°C" for 20 sec (except 803H-E)

Maintain " TE < -25°C" for 20 sec (803H-E)

To Normal

Maintain " TE -23°C" for 20 sec (except 803H-E)

Maintain " TE < -25°C" for 20 sec (803H-E)

D zone

*1 In 10 to 15 minutes after the heating

Jumper switching O: Short circuit ×: Open

J805 J806 [d]

O O 150 min (Factory default) O × 90 min

× O 60 min × × 30 min

operation starts, the lowest value of TE is recorded as TEO, and the lowest temperature of To as ToO. Inside brackets: For 803H-E

Compressor

Outdoor fan

4-way valve

Outdoor PMV

OFF

500pulse 200pulse

0pulse

0s 30s 40s

Defrosting operation

0s 30s10s 40s

Item Operation flow and applicable data, etc.

8-4. Outdoor unit control

7) Winding heating control

1)This control energizes the inactive compressor instead of the case heater to warm the compressor. The purpose is to prevent the refrigerant from staying inside the compressor.

2)After the unit is installed, failure to perform energization for the given time period may cause the compressor to fail. Also, when starting an operation long after the power left off, first energize the compressor before starting the operation in the same way as a trial run.

3)Energization is determined by the TD sensor and TO sensor. If the TO sensor fails, the TE sensor automatically takes over the operation. Determine if the TO sensor has failed check the LED’s on the outdoor unit PCB.

4)If TD is 30°C or higher, the energization stops.

(Usual)

Not energized

Intermittently energized 10 mins: ON / 5 mins: OFF

*Energization condition TD 30°C

18 15

°C °C

°C

Output "equal to 40W"

°C

Continuously energized Output "equal to 40W"

(when TO sensor fails)

Not energized

Intermittently energized 10 mins: ON / 5 mins: OFF Output "equals to 40W"

Continuously energized Output "equals to 40W"

*Energization condition TD 30°C

20 18

12 10

°C °C

Notes During winding energization, energizing noise may be heard, but this is not abnormal.

8) Short circuit operation prevention control

1)In 11 minutes after the operation start, the compressor may not stop for protection. This status is not abnormal. (The operation duration time of the compressor varies depending on a operation status.)

2)If the operation stops with the remote controller, the operation does not continue.

9) Over current protection control

1)A detection of abnormal current with the over current protection control stops the compressor.

2)Set the abnormality detection counter to 1, and restarts the compressor after 150 seconds.

3)When the stop by over current protection control counts 8 times, error code is displayed and the compressor does not restart. (Remote controller error code display: HO1)

Item Operation flow and applicable data, etc.

8-4. Outdoor unit control

10)High pressure release control

1)To prevent excessive hi pressure rise, operation frequency is controlled by the TL sensor when cooling and by TWO sensor when heating.

2)If the TL sensor when cooling or the TWO sensor when heating detects an abnormal stop zone temperature, the compressor stops and the abnormality detection counter increments.

3)When the compressor stops in 2), the operation restarts when the temperature returns to the usual operation zone ("e" or below) after 150 seconds.

4)When the compressor stops in 2), the abnormality detection counter is cleared when the operation continues for 10 minutes. If the counter counts 10 times, error code is displayed and the compressor does not restart.

5)For details about an check code displayed, see the check code list.

Heating TC Cooling TL

[°C]

Abnormal stop

Frequency normal down

Frequency slow down

Frequency hold

Frequency slow up

(up to the point instructed)

As instructed

803H-E 1103H-E, 1403H-E 1103H8(R)-E, 1403H8(R)-E, 1603H8(R)-E

Heating Cooling Heating Cooling Heating Cooling

TC (TWO+2) TL TC (TWO+2) TL TC (TWO+2) TL

a 64°C 63°C 64°C 63°C 62°C 63°C b 62°C 62°C 62°C 62°C 59°C 62°C

c 60°C 60°C 60°C 60°C 57°C 60°C d 58°C 58°C 58°C 58°C 52°C 58°C e 54°C 54°C 54°C 54°C 51°C 54°C

11)High pressure switch The high pressure switch detects abnormal high pressure (higher than 4.15Mpa) in cooling cycle and protect the

compressor.

• The high pressure switch stops the compressor as the pressure in the cooling cycle becomes higher than 4.15Mpa.

• The compressor will restart three minutes after stopping.

• If the high pressure switch functions again after restarting, the compressor stops and the “A07” error code is indicated.

12)Compressor case thermostat The compressor case thermostat functions to protect the compressor when the blow-out temperature from the

compressor is too high.

• The compressor case thermostat on the upper part of compressor stops the compressor.

• The compressor will restart three minutes after stopping.

• If the compressor case thermostat functions again after restarting (functions at 125°C), compressor stops and the “H04” error code is indicated.

13)Bottom plate heater control 13-1)Controllable models (Models equipped with the bottom plate heater (outdoor,3 phases, 400V) only)

• HWS-1403XWH**-E/HWS-1103H8R-E

• HWS-1403XWH**-E/HWS-1403H8R-E

• HWS-1403XWH**-E/HWS-1603H8R-E

13-2)Target to control

Control ON and OFF of the bottom plate heater using the outdoor temperature sensor (To).

Bottom plate heater is turned off

Bottom plate heater is turned on

9 Method of Defect Diagnosis

In order to diagnose the defective part of the heat pump system, first understand the symptom of the defect. (1) Check the operation status. (It does not move, or it moves but stops, etc.) (2) Flashing display on the display part of the hydro unit. (3) Check the “check code” by the remote control.

Please refer to the following procedure of defect diagnosis for the identification.

No. Procedure of defect diagnosis Remark

Matters to be confirmed first 9-1-1Check the power supply voltage

9-1-2Check for any miswiring of the

9-1

Non-defective operation (program operation) Non-defective program operations for the

9-2

Outline of the determination diagram

9-3

connection cables between the hydro unit and the outdoor unit

9-1-3About the installation of the

temperature sensor

9-3-1Procedure of defect diagnosis 9-3-2How to determine from the check

code display on the remote controller

9-3-3How to cancel a check code on the

remote controller

9-3-4How to diagnose by error code

Check the power supply for the heat pump hot water heater, the crossover be tween the hydro unit and the outdoor unit, and the installation of temperature sensors.

protection of the heat pump unit. With reference to the "check code",

roughly identify the defect from the defect diagnosis for the heat pump hot water heater and determine the defective part from individual symptoms.

Diagnosis flow chart for each error code

9-4

Operation check by PC board 9-5-1Operation check mode The operation check mode allows to

9-5

Brief method for checking the

9-6

key components

9-4-1Hydro unit failure detection 9-4-2Outdoor unit failure detection 9-4-3Temperature sensor, temperature-

resistance characteristic table

9-6-1Hydro unit 9-6-2Outdoor unit

determine good or not by checking the operation of the 4-way valve, 2-way valve and pulse motor valve.

How to determine the presence of any defect particularly in functional parts.

9-1. Matters to be confirmed first

9-1-1. Check the power supply voltage

Check that the power supply voltage is AC220-230 V± 10 % (signal phase type), AC380-400 V± 10 % (3 phase type). If the power supply voltage is not in this range, it may no t oper ate normally.

9-1-2. Check for any miswiring of the connection cables between

the hydro unit and the outdoor unit

The hydro unit and the outdoor unit are connected with three connection cables. Make sure the interconnecting connections between the hydro unit and the outdoor unit terminal blocks are connected to the correct terminal numbers. If not connected correctly, the heat pump system does not operate. However, a miswiring would not cause damage to the equipment.

9-1-3. About the installation of the temperature sensor

If each sensor is removed due to the replacement of the water heat exchange or inverter board, or the replacement of the refrigeration cycle parts, make sure to put the sensor back to the position where it was before.

• Each sensor position has a marking. Make sure to put it back to the exact position.

• Make sure to install it with a sensor holder so that the temperature sensing part of the sensor and the straight part of the copper piping are attached with each other tightly.

• If the installation of the sensor is incomplete or the installed position is wrong, it will not perform a normal control operation and may cause a defect such as a malfunction of the equipment or an occurrence of an abnormal sound, etc.

9-2.

Non-defective operation (program operation) … No fault code display appears.

In order to control the heat pump unit, there are the following operations as the built-in program operations in the microcomputer. If a claim occurs about the operation, please confirm whether it falls under any of the contents in the following table.

If it does, please understand that the symptom is not a defect of the equipment, and it is an operation necessary for the control and maintenance of the heat pump unit.

Table 9-2-1 Non-defective operation

No. Operation of the heat pump system Explanation

The compressor sometimes does not operate even within the

range of compressor “ON”.

During the hot water supply or heating operation, without reaching the set temperature, the compressor operation

frequency stays at a frequency of less than the maximum Hz or lowers down.

The “Stop” operation on the remote control will not stop the

circulating pump. (The same for hot water supply, heating and cooling)

“ON” on the remote control will not operate the compressor. (It will not operate even after the reboot delay timer elapsed)

When the power is turned on, it starts operation without operating the remote control.

The compressor does not operate during the operation of t he compressor reboot timer (3 min). Even after the power activation, the compressor reboot timer continues to be active.

It may be caused by the high temperature release control (release protection control by the temperature of the water heat exchanger) or the current release control.

In order to deal with the temperature increase in the heat exchanger after stopping, the operation continues for 1 min after the compressor is stopped.

When the outdoor temperature (TO sensor detection temperature) is -20°C or lower, the heat pump will not operate in order to protect the compressor, and the heater will operate instead.

• The auto restart operation may be working.

• The antifreeze operation may be working.

• If the TWI, TWO or THO sensor detects a temperature below 4°C, the operation changes from circulating pump

--->> circulating pump + heater.)

9-3. Outline of the determination diagram

The first determination of whether a defective part is in the hydro un it or the o utdoor un it can be perfor med by th e following method.

9-3-1. Procedure of defect diagnosis

In the case of a defect, please apply the following procedure in order to find the defective part .

Defect

Confirm the check code on the remote control display

Abnormality in the outdoor unit or hot-water tank unit

Check code

A01-A12

Check code

L07-L16

Check code

FXX

Yes

Defect in Hydro unit

Abnormality in the communication or setting system

Abnormality in the water heat exchange or outdoor unit sensor system

9-3-2. How to determine from the check code on the remote

control

If the defect is limited by the check code displayed on the remote control, please repair the defect base d on the table on the next page. The check codes are separated into two groups: software and hardware errors.

Since a hardware error cannot be cancelled without a part replacement etc., please perform a repair. If its abnormality is determined, the abnormality is noticed by indicating the check code on the remote control check

code display part while sounding off a buzzer.

Check code display part

9-3-3. How to cancel a check code on the remote controller

(1)Press or button (on the operation side) to clear the check code. (2)Press to stop a buzzer for an abnormality only.

Although the above procedure cancels the check code, the hardware error will be displayed again until the hardware repair is completed.

ZONE1,2 HOT WATER

9-3-4. How to diagnose by error code

Defect mode detected by the water heat exchange

O ... Possible

×.... Not possible

Check

code

Pump or flowing quantity error

1) Detected by TC sensor TC 63°C is detected in the heating or hot water supply heat pump operation (except for defrosting).

2)Detected by flow switch abnormality When no signal of the flow switch is

showing 2 min after the built-in pump operation started.

A01

3)Detection of chattering abnormality in the flow switch input

Chattering detection: Detects input changes (OFF⇔ON) 4 times within 10 seconds during operation.

4)Disconnection of the flow switch connector

When the stopped built-in pump starts its operation, the flow switch status is detecting "water flow".

Temperature increase error (heating) When one of the TWI, TWO and THO

A02

sensors exceeds 70°C.

Temperature increase error (hot water supply)

A03

When the TTW sensor exceeds 85°C.

Antifreeze operation

1)TWO>20°C condition: 2×TC+TWO < -12°C is detected.

2)TWO 20°C condition: TC+TWO < 4°C is detected.

3)TWI 10°C is detected during

A04

A05

defrosting.

Piping antifreeze operation

Activating the heater under the condition of TWO<4orTWI<4orTHO<4 does not achieve TWO,TWI,THO 5°C after 30 min elapsed.

Diagnostic functional operation

Operational cause

Backup present

Heating

Hot water

Heating

Hot water

Automat

ic reset

Determination and action

1.Almost no or little water flow.

• Not enough vent air

• Dirt clogging in the water piping system.

• The water piping is too long.

• Installation of buffer tank and secondary pump

1.Disconnection of the flow switch

connector.

2.Defect of the flow switch.

1.Check the water inlet, water outlet

and heater outlet (TWI, TWO, THO) sensors.

2.Defect of the backup heater (defect

automatic reset thermostat).

1.Check the hot water cylinder sensor

(TTW).

2.Check the hot water cylinder thermal

cut-out.

1.Almost no or little water flow.

• Dirt clogging in the water piping system.

• The water piping is too long.

2.Check the heater power circuit.

• Power supply voltage, breaker, power supply connection

3.Set the presence of the backup

heater.

4.Check the water inlet, water outlet

and heat exchange (TWI, TWO, TC) sensors.

1.Check the heater power circuit.

• Power supply voltage, breaker, power supply connection

2.Check the water inlet, water outlet

and heater outlet sensors (TWI,. TWO, THO).

3.Disconnection of the backup heater.

Number of

abnormalities

for

confirmation

491

291

491

291

192

193

Heating2

Hot water2

Cooling4

195

Detailed

item

Check

code

Pressure switch operation

The pressure switch operates for 300 sec continuously during the heat pump

A07

operation.

Low pressure sensor operation error

The low pressure sensor det ec t ed 0. 2 MPa or less.

A08

Overheat protection operation

When the thermostat of the backup heater activates during the operation of

A09

the heat pump or backup heater. When the thermostat operation is activated while it has been stopped.

Operation of the release protection

When the TWO release counts to 10.

A11

Heating, hot water heater

The antifreeze control is detected under the condition of TWI<20°C while

A12

TWI

>15°C, TTW>20°C is not detected

after the heater backup.

Regular communication error between hydro unit and remote controller

E03

When there is no regular communication from the remote control for 3 min, or when no remote control is equipped.

Regular communication error between hydro unit and outdoor unit

E04

The serial signal cannot be received from outdoor.

TC sensor error

F03

Open or short circuit in the heat exchange temperature sensor.

TWI sensor error

F10

Open or short circuit in the water inlet temperature sensor.

TWO sensor error

F11

Open or short circuit in the water outlet temperature sensor.

TTW sensor error

F14

Open or short circuit in the hot water cylinder sensor.

Diagnostic functional operation

Operational cause

Backup present

Heating Cooling

Hot water

Automat

ic reset

× O

Number of

Determination and action

1.Almost no or little water flow.

2.Defect of the flow switch.

3.On-load operation under the above

conditions.

4.Defect in the pressure switch.

1.Almost no or little water flow.

2.Defect of the flow switch.

3.On-load cooling or prolonged

defrosting (a lot of frost formation) under the above conditions.

4.Defect in the low pressure sensor. 2

1.No water (heating without water) or

no water flow.

2.Defect of the flow switch.

3.Defect of the backup heater (poor

automatic reset thermostat).

1.Almost no water flow.

2.Defect of the flow switch.

3.Check the water outlet temperature

sensor (TWO).

1.Activated by a large load of heating

or hot water supply.

2.Check the heater power circuit

(backup or hot water cylinder heater).

• Power supply voltage, breaker, power supply connection

1.Check remote control connection.

2.Defect in the remote control.

1.Check the serial circuit.

• Miswiring of the crossover between the water heat exchanger and the outdoor unit

1.Check the resistance value and

connection of the heat exchange temperature sensor (TC).

1.Check the resistance value and

connection of the water inlet temperature sensor (TWI).

1.Check the resistance value and

connection of the water outlet temperature sensor (TWO).

1.Check the resistance value and

connection of the hot water cylinder sensor (TTW).

abnormalities

confirmation

for

196

10 99

1100

1—

1101

1103

1104

Detailed

item

Check

code

TFI sensor error

F17

Open or short circuit in the floor temperature sensor.

THO sensor error

F18

Open or short circuit in the heater outlet temperature sensor.

Detection of THO disconnection err or

F19

When TWO–THO>15K is detected and 30 sec elapsed.

TFI sensor error

F20

When TWO–TFI>30K is detected and TFI<TWI–5K is detected.

Low pressure sensor error

When PS<0.07 MPa is detected for 90 sec or more. (cooling, defrosting)

F23

When PS<0.07 MPa is detected for 10 min or more. (hot water supply, heading)

EEROM error

F29

Inconsistency is detected once without verify ACK after writing to EEPROM.

Extended IC error

F30

When the extended IC is abnormal.

Communication error

L07

Individual hydro units have a group line.

Communication error

The capability code for the hydro unit

L09

has not been set.

Setting error

L16

When ZONE1 has not been set, while ZONE2 has been set.

Diagnostic functional operation

Operational cause

Number of

Backup present

Automat

ic reset

× O

××

Determination and action

1.Check the resistance value and

connection of the floor-inlet temperature sensor (TFI).

1.Check the resistance value and

connection of the heater outlet temperature sensor (THO).

1.Check for any disconnection of the

heater outlet temperature sensor (THO).

1.Check the connection of the floor-

inlet temperature sensor (TFI).

1.Check the connection (body or

connection wiring) of the low pressure sensor.

2.Check the resistance value of the

low pressure sensor.

1.Replace the water heat exchange

control board.

1.Replace the water heat exchange

control board.

1.Replace the water heat exchange

control board.

1.Check the setting of the FC01

capability specifications. HWS-803xx-E = 0012 HWS-1403xx-E = 0017

abnormalities

for

confirmation

1104

1105

1106

1107

1108

××1.Check the body DP-SW12_2,3. 1 108

Detailed

item

Defect mode detected by the outdoor unit

O ... Possible

×.... Not possible

Check

code

TD sensor error

F04

Open or short circuit in the discharge temperature sensor.

TE sensor error

F06

Open or short circuit in the heat exchange temperature sensor.

TL sensor error

F07

Open or short circuit in the heat exchange temperature sensor.

TO sensor error

F08

Open or short circuit in the outdoor temperature sensor.

TS sensor error

F12

Open or short circuit in the suction temperature sensor.

TH sensor error

F13

Open or short circuit in the heat-sink temperature sensor.

TE, TS sensors error

Open or short circuit in the temperature

F15

sensors.

F31 EEPROM error O

Compressor breakdown

1 When the operation frequency lowers

due to the current release 40 sec or later after the compressor activation and it stops by underrunning the minimum frequency.

H01

2 When the operation frequency lowers

due to the current limit control and it stops by underrunning the minimum frequency.

3 When an excess current is detected

0.8 sec or later after the compressor activation.

Compressor lock

1 When the input current is more than

H02

H03

zero 20 sec or later after the compressor activation and the activation has not been completed.

Defect in the current detection circuit

Diagnostic functional operation

Operational cause

Backup present

Automat

ic reset

O ×

Number of

Determination and action

1.Check the resistance value and

connection of the discharge sensor (TD).

1.Check the resistance value and

connection of the heat exchange temperature sensor (TE).

1.Check the resistance value and

connection of the heat exchange temperature sensor (TL).

1.Check the resistance value and

connection of the outdoor temperature sensor (TO).

1.Check the resistance value and

connection of the suction temperature sensor (TS).

1.Check the resistance value and

connection of the heat-sink temperature sensor (TH).

1.Check for any wrong installation of

the heat exchange temperature sensor (TE) and the suction temperature sensor (TS).

abnormalities

for

confirmation

1120

Detailed

item

102 119

103 120

× 1121

1.Check the power supply voltage

(AC220-230 V±10 %: single phase type).

(AC380-400 V±10 %: 3 phase type).

2.Over-loaded condition of the

refrigeration cycle.

3.Check that the service valve is fully

open.

1.Defect of compressor (lock)

– Replace the compressor.

2.Defect of compressor wiring (open

phase).

1.Replace the outdoor inverter control

board.

8109

8110

Check

code

Operation of case thermostat

When the case thermostat exceeds 125°C.

H04

Unset service PC board jumper

L10

Jumpers J800-J803 have not been cut.

The communication between the outdoor PC board MUCs error

L29

No communication signal between IPDU and CDB.

The outlet temperature error

When the discharge temperature sensor

P03

(TD) exceeds 111°C.

P04 The high pressure switch error O

The power supply voltage error

When the power supply voltage is

P05

extremely high or low.

Overheating of heat-sink error

When the heat-sink exceeds 105°C.

P07

Detection of gas leak

When the discharge temperature sensor (TD) exceeds 106°C for consecutive 10 min. When the suction temperature sensor

P15

(TS) exceeds 60°C for cooling or 40°C for heating for 10 consecutive min.

The 4-way valve inversion error

When the heat exchange temperature sensor (TE) exceeds 30°C or the suction

P19

temperature sensor (TS) exceeds 50°C during the heat pump operation.

Diagnostic functional operation

Operational cause

Backup present

Number of

Automat

ic reset

× 1. Cut J800-J803. 1 111

× 1. Replace the outdoor control board. 1 111

Determination and action

1.Check the refrigeration cycle (gas

leak).

2.Check the case thermostat and

connector.

3.Check that the service valve is fully

open.

4.Defect of the pulse motor valve.

5.Check for kinked piping.

1.Check the refrigeration cycle (gas

leak).

2.Defect of the pulse motor valve.

3.Check the resistance value of the

discharge temperature sensor (TD).

abnormalities

for

confirmation

4110

4112

Detailed

item

× 10 113

1.Check the power supply voltage.

(AC220-230 V±10 %: single phase type). (AC380-400 V±10 %: 3 phase type).

1.Check the thread fastening and

heat-sink grease between the outdoor control board and the heatsink.

2.Check the heat-sink fan duct.

3.Check the resistance value of the

heat-sink temperature sensor (TH).

1.Check the refrigeration cycle (gas

leak).

2.Check that the service valve is fully

open.

3.Defect of the pulse motor valve.

4.Check for kinked piping.

5.Check the resistance value of the

discharge temperature sensor (TD) and the suction temperature sensor (TS).

1.Check the operation of the 4-way

valve unit or the coil characteristi cs.

2.Defect of the pulse motor valve.

3.Check the resistance value of the

heat exchange temperature sensor (TE) and the suction temperature sensor (TS).

4114

4115

4116

Check

code

High pressure protection operation

When an abnormal stop occurs due to the high pressure release control. When the heat exchange temperature sensor (TL) detects 63°C during the

P20

cooling operation. When the water outlet sensor (TWO) detects 60°C during the heating or hot water supply operation.

Outdoor fan system error

When a DC fan rotor position detection NG, element short circuit, loss of synchronization, or abnormal motor

P22

current occurs.

Short circuit of the compressor driver element error

When an abnormal short circuit of IGBT is detected.

P26

Compressor rotor position error

The rotor position in the compressor cannot be detected.

P29

Diagnostic functional operation

Operational cause

Backup present

Automat

ic reset

Determination and action

1.Check that the service valve is fully

open.

2.Defect of the pulse motor valve.

3.Check the outdoor fan system

(including clogging).

4.Over-filling of refrigerant.

5.Check the resistance value of the

heat exchange temperature sensor (TL) and the water outlet temperature sensor (TWO).

1.Check the lock status of the motor

fan.

2.Check the connection of the fan

motor cable connector.

3.Check the power supply voltage.

(AC220~230 V±10%: single phase type) (AC380~400 V±10%: 3 phase type)

1.P26 abnormality occurs when

operating with the compressor wiring disconnected … Check the control board.

2.No abnormality occurs when

operating with the compressor wiring disconnected … Compressor rare short.

1.Even if the connection lead wire of

the compressor is disconnected, it stops due to an abnormality in the position detection … Replace the inverter control board.

2.Check the wire wound resistor of the

compressor. Short circuit … Replace the compressor.

Number of

abnormalities

for

confirmation

10 117

1-4 118

8118

Detailed

item

Defect mode detected by the remote control

Diagnostic functional operation

Check code

Not

displaying at

all

(cannot operate by the remote

control)

E01

E02

E09

Operational cause

No communication between hydro unit an remote controller

• The remote control wiring is not connected correctly.

• The hydro unit has not been turned on.

No communication between hydro unit and remote controller

• Disconnection of the crossover between the remote control and the base unit of the indoor unit (detected on the remote control side).

Defect in the signal transmission to the hydro unit.

(Detected on the remote control side)

Several remote control base units

(Detected on the remote control side)

Status of air-

conditioning

Stop – Defect in the remote control power

Stop (Automatic reset)

Stop (The handset continues)

Condition

Displayed when the abnormality is detected.

Determination and action

supply

1.Check the remote controller wiring.

2.Check the remote controller.

3.Check the hydro unit power supply wiring.

4.Check the water heat exchange control board.

Defect in the reception of the remote control

1.Check the remote control crossover.

2.Check the remote control.

3.Check the hydro power supply wiring.

4.Check the water heat exchanger board.

Defect in the transmission of the remote control

1.Check the transmitter circuit inside the remote control.

… Replace the remote control.

1.2 Check several base units with the

remote control

… The base unit is only one, and othe rs

are handsets.

9-4. Diagnosis flow chart for each error code

9-4-1. Hydro unit failure detection

[A01] Error Pump flow determination

[A01] occurs

Operation restarts

Perform

air vent

Yes

Pump rotates

Yes

Excess air noise

comes from inside

the pump

Chattering noise comes

from flow switch

Pump stops 2-3

minutes after its rotation

started

No (No pump sound)

Flow switch is

connected to board

Built-in pump is

connected to board

Flow switch is normal

Yes

Connect flow switch connector to board

Connect pump connector to board

Replace flow switch

Replace pump

TC sensor characteristic

is correct

Yes

Flow switch is normal

Yes

Water heat exchanger control board

is defective, replace it

Flow shortage

(Identify causes, and resolve)

Dirt clogging inside water circuit

(strainer)

12 M or longer water pipe to a branch, or 5 or less branches

Replace TC sensor

Remove waste

Fit buffer tank and the second pump

Attach or replace flow switch

[A02] Error Temperature rise and error short circuit

Start

TWI, TWO, and THO

sensor characteristics are

correct

Yes

Flow switch is normal

Yes

Water outlet

temperature is 70

or higher

Hot water from

boiler or other circuits does

not come in

Yes

°C

(TWI,TWO,THO 70°C)

Yes

Replace TWI, TWO, and THO sensors

Replace flow switch

Correct water circuit (To prevent hot water of other circuits from entering)

Backup heater is energized

(Measure heater current)

Replace water heat exchange control board

Yes

Failure of backup heater (Too large heater input, thermostat short circuit)

Replace heater unit

• If Boiler setting is ON (DPSW13-2 is ON) and FC62 is “1”, the A02 error is not detected.

[A03] Error Temperature rise and error short circuit

Start

TTW sensor

characteristic is correct

Yes

Hot water cylinder heater

is energized

Yes

Mg-sw (RY05) for

heater operates

Yes

At normal

temperature, tank thermostat

is energized

Yes

(TTW 85°C is detected)

Operating noise at normal time

Replace TTW sensor

Replace Mg-sw

Hot water cylinder

thermostat operates

Operation temperature 82°C

Yes

Replace water heat exchange control board

Replace hot water cylinder thermostat

[A04] Error Freeze prevention control

When the outside temperature or inlet water temperature is low (approx. 20°C or lower) and the room load is large (operation frequency rating), the freeze prevention control may be activated.

Start

Operation restart

Perform

air vent

Secure water circulation amount

Dirt clogging inside water circuit

(inside strainer, etc)

Replace flow switch

Yes

Excess air

inside pump

Chattering from

flow switch

Water heat

exchanger board DP_SW11-1

is ON

Yes

Backup

heater terminal has

230ACV ( ± 23V)

Yes

Backup

heater element

is conductive

Yes

Circulation flow shortage

Power is

connect to backup

heater terminal

Yes

(Backup heater NG)

12 M or longer water pipe to a branch, or 5 or less branches

Fit buffer tank and the second pump

Set DP_SW11-1 to ON

Connect backup heater power cable

Set heater breaker to ON Check indoor wiring

Replace backup heater unit

Yes

TC, TWO, TWI

sensor characteristics

are correct

Yes

Replace water heat

exchange control board

(Refer to Charasteristic table on page 122)

Replace TC, TWO, and TWI sensors

[A05] Error Piping freeze prevention control

Restart

TWI 4, TWO 4, or

THO 4 is detected

Circulation pump keeps

being energized or 3 minutes

passed after the start

Water heat

exchange control board

DPSW11-1 is ON

Yes

Backup heater terminal

has 220-230V (± 10%)

Yes

Backup heater element

is conductive

Yes

TWI, TWO, THO

sensor characteristics

are correct

Power is connect to

built-in heater terminal

Yes

No (Backup heater NG)

(Refer to Charasteristic table on page 122)

Set water heat board DPSW11-1 to ON

Place power cable for backup heater

Set breaker for backup heater to ON, or Check indoor electronic wiring

Replace backup heater and safety valve

Replace TWI, TWO, and THO sensors

Yes

Replace water heat

exchange control board

[A07] Error Pressure switch operation (Hot water supply/Heating operation)

Start

Flow switch is normal

Yes

Excess air

noise comes from

Yes

inside pump

Chattering

noise comes from

Yes

flow switch

Continued

operation at high outside air

temperature and at 50°C or higher

set temperature

Yes

Secure water circulation amount

Circulation flow shortage

Remove sufficiently excess air

Waste stuck inside water circuit

12 M or longer water pipe to a branch, or 5 or less branches

Replace flow switch

Remove waste

Place buffer tank and the second pump

Lower set temperature

TWO sensor

is attached

to pipe.

Yes

Pressure switch

is normal

Yes

Replace water heat

exchange control board

Attach TWO sensor

Replace pressure switch

[A08] Error Low pressure sensor lowering operation failure (Cooling/Defrosting operation)

Start

Flow switch is normal

Yes

Excess air

noise comes from

inside pump

Chattering

noise comes from

flow switch

Continued

operation at low outside

temperature and at 15°C or lower

set temperature

Yes

(Cooling overload operation)

Secure water circulation amount

Circulation flow shortage

Remove sufficiently excess air

Waste stuck inside water circuit

12 M or longer water pipe to a branch, or 5 or less branches

Replace flow switch

Remove waste

Place buffer tank and the second pump

Raise set temperature

Defrosting

takes 15 mins or longer

(Frost remains)

Lo pressure sensor

is normal

Yes

Replace water heat

exchange control board

Yes

Defrost outdoor unit where frost remains

Replace lo pressure sensor

[A09] Error Overheat prevention thermostat failure (Hot water supply/Heating operation)

Start

Water cycle contains water

Yes

Flow switch is normal

Yes

At normal temperature,

overheat preventive thermostat

is normal

Yes

Replace water heat exchange control board

or overheat preventive thermostat failure

*Replace water heat exchange control board or overheat preventive thermostat failure: After the control board is replaced, if the same operation repeats, the overheat preventive thermostat is determined as defective (does not operate at 75°C).

Put water into water circuit (Recommended: 1 - 2 Bar)

Replace flow switch

Replace heater unit exchanger air vent valve

[A11] Error Release protection operation

Start

Flow switch is normal

Yes

Excess air

noise comes from

inside pump

Chattering

noise comes from

flow switch

TWI sensor is

attached to pipe

Yes

Secure water circulation amount

Circulation flow shortage

Remove sufficiently excess air

Waste stuck inside water circuit

12 M or longer water pipe to a branch, or 5 or less branches

Replace flow switch

Remove waste

Place buffer tank and the second pump

Attach TWI sensor

TWI and TWO

sensor characteristics

are normal

Yes

Replace water heat

exchange control board

Replace TWI or TWO sensor

Toshiba HWS-1403XWHD6-E, HWS-803XWHD6-E, HWS-1403XWHT9-E, HWS-1403H-E, HWS-1603H8R-E DATA BOOK

Specifications and Main Features

Frequently Asked Questions

User Manual