Fisher FHOF-WHS-100CE3 User manual

Service Manual
Air-to-Water Heat pump
WARNING
This service information is designed for experienced repair technicians only and is not designed for use by the general public.
It does not contain warnings or cautions to advise non-technical individuals of potential dangers in attempting to service a product.
Products powered by electricity should be serviced or repaired only by experienced professional technicians. Any attempt to service or
repair the products dealt with in this service information by anyone else could result in serious injury or death.
PRECAUTION OF LOW TEMPERATURE
In order to avoid frosting, be assured of no refrigerant leakage during the installation or repairing of refrigerant circuit.

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Content
Safety Precautions............................................................................................................................................... 3
1. General Information ........................................................................................................................................ 6
1.1 Measurements............................................................................................................................................ 6
1.2 External outlook ........................................................................................................................................ 6
1.3 Nomenclature ............................................................................................................................................ 7
2. Specifications .................................................................................................................................................. 8
2.1 FHOF-WHS-100CE3 , FHOF-WHS-160CE3-3F ..................................................................... 8
2.2 FHIF-WHS-120CE3, FHIF-WHS-160CE3............................................................................................... 12
3. Features ......................................................................................................................................................... 13
3.1 Outdoor unit ............................................................................................................................................ 13
3.2 Hydronic module ..................................................................................................................................... 14
4. Operation range ............................................................................................................................................. 15
5. Sound pressure level ...................................................................................................................................... 16
6. Accessories .................................................................................................................................................... 18
7. Performance data ........................................................................................................................................... 19
7.1 Heating capacity ...................................................................................................................................... 19
8. System diagram ............................................................................................................................................. 21
9. Wiring diagram .............................................................................................................................................. 22
9.1 Outdoor unit ............................................................................................................................................ 22
9.2 Hydronic module ..................................................................................................................................... 24
9.3 Printed circuit board ................................................................................................................................ 25
10. Exploded view ............................................................................................................................................. 28
10.1 Outdoor unit........................................................................................................................................... 28
10.2 Hydronic module ................................................................................................................................... 30
11. Installation ................................................................................................................................................... 31
11.1 Installation for outdoor unit ................................................................................................................... 31
11.2 Installation for hydronic module ........................................................................................................... 34

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11.3 Refrigerant pipe work............................................................................................................................ 37
11.4 Water piping.......................................................................................................................................... 41
11.5 Electrical wiring .................................................................................................................................... 47
11.6 Field wiring ........................................................................................................................................... 49
12. Start-up and configuration........................................................................................................................... 55
12.1 DIP switch settings................................................................................................................................ 55
12.2 Pre-operation checks ............................................................................................................................. 56
12.3 Water pump........................................................................................................................................... 56
13. Operation and control.................................................................................................................................. 58
13.1 Icon introduction ................................................................................................................................... 58
13.2 Setting the clock.................................................................................................................................... 59
13.3 Running mode and temperature setting.............................................................................................. 60
13.4 Display shows........................................................................................................................................ 61
13.5 Electric auxiliary heating....................................................................................................................... 62
13.6 Forced defrosting................................................................................................................................... 62
13.7 Sterilization mode.................................................................................................................................. 62
13.8 Weekly timer setting.............................................................................................................................. 62
13.9 Power-down memory setting................................................................................................................. 64
13.10 Spot check ........................................................................................................................................... 64
13.11 Error code display................................................................................................................................ 65
13.12 Anti-freezing function......................................................................................................................... 65
14. Troubleshooting........................................................................................................................................... 66
14.1 Spot check ............................................................................................................................................. 66
14.2 Error code and troubleshooting............................................................................................................. 68

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Safety Precautions
Read the following “SAFETY PRECAUTIONS” carefully before installation.
Electrical work must be installed by a licensed electrician. Be sure to use the correct rating and
main circuit for the model to be installed.
The caution items stated here must be followed because these important contents are related to
safety. The meaning of each indication used is as below. Incorrect installation due to ignoring of
the instruction will cause harm or damage, and the seriousness is classified by the following
indications.
Please leave this installation manual with the unit after installation.
WARNING This indication shows the possibility of causing death or serious injury.
CAUTION This indication shows the possibility of causing injury or damage to properties only.
The items to be followed are classified by the symbols:
Symbol with white background denotes item that is PROHIBITED from doing.
Symbol with dark background denotes item that must be carried out.

Carry out test run to confirm that no abnormality occurs after the installation.
Then, explain to user the operation, care and maintenance as stated in instructions.
Please remind the customer to keep the operating instructions for future reference.
WARNING
1. Do not use unspecified cord, modified cord, joint cord or extension cord for power supply cord. Do not share the singleoutlet with
other electrical appliances. Poor contact, poor insulation or over current will cause electrical shock or fire.
2. Do not tie up the power supply cord into a bundle by band. Abnormal temperature rise on power supply cord may happen.
3. Keep plastic bag (packaging material) away from small children, it may cause suffocation.
4. Do not use pipe wrench to install refrigerant piping. It might deform the piping and cause the unit to malfunction.
5. Do not purchase unauthorized electrical parts for installation, service, maintenance and etc. They might cause electrical shock or fire.
6. Do not modify the wiring of Indoor Unit for installation of other components (i.e. heater, etc). Overloaded wiring or wire connection
points may cause electrical shock or fire.
7. Do not add or replace refrigerant other than specified type. It may cause product damage, burst and injury etc.
8. Do not use joint cable for Indoor / Outdoor Unit connection cable. Use specified Indoor / Outdoor Unit connection cable, refer to instruction
CONNECT THE CABLE TO THE INDOOR UNIT and connect tightly for Indoor / Outdoor Unit connection. Clamp the cable so that no external
force will be acted on the terminal. If connection or fixing is not perfect, it will cause heat up or fire at the connection.
9. Do not install outdoor unit near handrail of veranda. When installing outdoor unit at veranda of high rise building, child may climb up to
outdoor unit and cross over the handrail and causing accident.

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10. Do not insert your fingers or other objects into the unit, high speed rotating fan may cause injury.
11. Do not sit or step on the unit, you may fall down accidentally.
12. For electrical work, follow local wiring standard, regulation and this installation instruction. An independent circuit and single outlet
must be used. If electrical circuit capacity is not enough or defect found in electrical work, it will cause electrical shock orfire.
13. For water circuit installation work, follow to relevant European and national regulations (including EN61770) and local plumbing and
building regulation codes.
14. Engage dealer or specialist for installation. If installation done by the user is defective, it will cause water leakage, electrical shock or
fire.
 This is a R410A model, when connecting the piping, do not use any existing (R22) pipes and flare nuts. Using such samemay
cause abnormally high pressure in the refrigeration cycle (piping), and possibly result in explosion and injury. Use onlyR410A
15.
refrigerant.
 Thickness or copper pipes used with R410A must be 0.8 mm or more. Never use copper pipes thinner than 0.8 mm.
 It is desirable that the amount of residual oil is less than 40mg/10m.
16. When install or relocate Indoor Unit / Outdoor Unit, do not let any substance other than the specified refrigerant, e.g. air etc. mix into
refrigerant cycle (piping). Mixing of air etc. will cause abnormal high pressure in refrigeration cycle and result in explosion, injury etc..
17. Install according to this installation instruction strictly. If installation is defective, it will cause water leakage, electrical shock or fire.
18. Install at a strong and firm location which is able to withstand the set’s weight. If the strength is not enough or installation is not
properly done, the set will drop and cause injury.
19. This equipment is strongly recommended to be installed with Residual Current Device (RCD) on-site according to the respective
national wiring rules or country–specific safety measures in terms of residual current.
During installation, install the refrigerant piping properly before run the compressor. Operation of compressor without fixing
20. refrigeration piping and valves at opened condition will cause suck-in of air, abnormal high pressure in refrigeration cycle and result in
explosion, injury etc.
During pump down operation, stop the compressor before remove the refrigeration piping. Removal of refrigerant piping while
21. compressor is operating and valves are opened will cause suck-in of air, abnormal high pressure in refrigerant cycle and result in
explosion, injury etc.
22. Tighten the flare nut with torque wrench according to specified method. If the flare nut is over tightened, after a long period, the flare
may break and cause refrigerant gas leakage.
23. After completion of installation, confirm there is no leakage of refrigerant gas. It may generate toxic gas when the refrigerant contacts
with fire.
24. Ventilate the room if there is refrigerant gas leakage during operation. Extinguish all fire sources if present. It may cause toxic gas
when the refrigerant contacts with fire.
25. Only use the supplied or specified installation parts, else, it may cause unit vibrate loose, water leakage, electrical shock or fire.
26. The unit is only for use in closed water system. Utilization in an open water circuit may lead to excessive corrosion of water piping and
risk of incubating bacteria colonies, particularly Legionella, in water.
27. If there is any doubt about the installation procedure or operation, always contact the authorized dealer for advice and information.
28. Select a location where in case of water leakage, the leakage will not cause damage to other properties.
29. When installing electrical equipment at wooden building of metal lath or wire lath, in accordance with electrical facility standard, no

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electrical contact between equipment and building is allowed. Insulator must be installed in between.
30. Any work carried out on the Indoor Unit / Outdoor Unit after removing any panels which is secured by screws, must be carried out
under the supervision of authorized dealer and licensed installation contractor.
This unit must be properly earthed. The electrical earth must not be connected to a gas pipe, water pipe, the earth of lightening rod or
31. a telephone. Otherwise there is a danger of electrical shock in the event of an insulation breakdown or electrical earth fault in the
outdoor unit.
Do not use joint cable for outdoor connection cable. Use specified outdoor connection cable, refer to instruction CONNECT THE
32. CABLE TO THE OUTDOOR UNIT and connect tightly for outdoor connection. Clamp the cable so that no external force willbe acted
on the terminal. If connection or fixing is not perfect, it will cause heat up or fire at the connection.
CAUTION
1. Do not install the Indoor Unit / Outdoor Unit at place where leakage of flammable gas may occur. In case gas leaks and accumulates
at surrounding of the unit, it may cause fire.
2. Do not release refrigerant during piping work for installation, re-installation and during repairing a refrigeration parts. Take care of the
liquid refrigerant, it may cause frostbite.
3. Do not install this appliance in a laundry room or other high humidity location. This condition will cause rust and damage tothe unit.
4. Make sure the insulation of power supply cord does not contact hot part (i.e. refrigerant piping) to prevent from insulation failure (melt).
5. Do not apply excessive force to water pipes that may damage the pipes. If water leakage occurs, it will cause flooding and damage to
other properties.
6. Do not touch the sharp aluminum fin, sharp parts may cause injury.
7. Do not release refrigerant into the atmosphere. The product contains fluorinated greenhouse gases and that its functioning relies upon
such gases.
8. Select an installation location which is easy for maintenance.
9. Carry out drainage piping as mentioned in installation instructions. If drainage is not perfect, water may enter the roomand damage
the furniture.
Power supply connection to Indoor Unit.
 Power supply point should be in easily accessible place for power disconnection in case of emergency.
 Must follow local national wiring standard, regulation and this installation instruction.
 Strongly recommended to make permanent connection to a circuit breaker.
10. - Power supply 1: Use approved 20A 4-poles circuit breaker with a minimum contact gap of 3.0 mm.
- Power supply 2: Use approved 15/16A 2-poles circuit breaker with a minimum contact gap of 3.0 mm. (Only applicablefor
S*C09*3E8) or
Use approved 20A 4-poles circuit breaker with a minimum contact gap of 3.0mm. (Only applicable for
S*C12*9E8/S*C16*9E8)
11. Ensure the correct polarity is maintained throughout all wiring. Otherwise, it will cause electrical shock or fire.
12. After installation, check the water leakage condition in connection area during test run. If leakage occurs, it will cause damageto other
properties.
Installation work.
13. It may need two or more people to carry out the installation work. The weight of Indoor Unit / Outdoor Unit might cause injury if carried
by one person.

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1. General Information
1.1 Measurements
1.1.1 Outdoor units
Model Dimension (W*H*D) Net/Gross Weight (kg) Power Supply
1032×810×445
56.3/61
220~240V/1Ph/50Hz
1014×1430×450 124/138 380~415V/3Ph/50Hz
1.1.2 Hydronic module
Model Dimension (W*H*D) Net/Gross Weight (kg) Power Supply
490×910×340 48/56 220~240V/1Ph/50Hz
490×910×340 48/56 220~240V/1Ph/50Hz
1.2 External outlook
1.2.1 Outdoor unit
FHOF-WHS-100CE3 FHOF-WHS-160CE3-3F
FHOF-WHS-100CE3
FHOF-WHS-
-160CE3-3F
FHIF-WHS-120CE3
FHIF-WHS-160CE3

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1.2.2 Hydronic module
FHIF-WHS-120CE3
FHIF-WHS-160CE3

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2. Specifications
Model
Power supply V/Ph/Hz 220~240/1/50
Performance data
Heating Capacity kW 10.8
Power input kW 2.82
COP kW/kW 3.84
Capacity kW 9.6
Power input kW 3.5
COP kW/kW 2.74
Capacity kW 10.6
Power input kW 3.0
COP kW/kW 3.53
Capacity kW 9.2
Power input kW 3.68
COP kW/kW 2.5
Seasonal space
heating energy eff.
Class (average
climate general)
water outlet W 35℃
water outlet W 55℃
SCOP 5.15
3.35
Sound pressure level dB(A) 60
Physical data
Dimension
(W×H×D) mm 1032x810x445
Packing (W×H×D) mm 1075×875×495
Net/gross weight kg 56.3/61
Compressor
Brand GMCC
Type Rotary DC Inverter
Model EKTF310D43UMT
Poles 6
Speed rps 12~120
Oil POE/1000mL
Outdoor fan
Brand Yongan
Motor type Brushless DC motor
Model DRN-310-90-8
Number of fans 1
Air flow m3/h 4000
Number of rows 2
FHOF-WHS-100CE3
A++ (ETA%: 203)
A++ (ETA%:131,1)
(A7°
Heating
(A7°
Heating
(A2°
C/W35°C)
C/W55°C)
C/W35°C)
Heating
(A2°C/W55°C)
water outlet W 35℃
water outlet W 55℃

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Air side heat
exchanger
Tube pitch(a)×row
pitch(b) mm 25×21.7
Tube dia. and type Φ9.52 inner grooved
copper
Fin space mm 1.6
Fin type (code) Hydrophilic
aluminum
Coil
length×height×width mm 1003×750×43.3
Number of circuits 4
Piping connections
Liquid pipe Type Flaring
Dia.(OD) mm Φ9.52
Gas pipe Type Flaring
Dia.(OD) mm Φ15.88
Max. piping length m 20
Max. height
difference
Outdoor unit upside m 10
Outdoor unit
downside m 10
Refrigerant
Type R32
Quantity kg 3
Throttle type EXV
Additional charge g (Total pipe length - 5)m *30g/m
Ambient
temperature range
Cooling ℃-5～46℃
Heating ℃-28～43℃
Sanitary hot water ℃-28～43℃
Water temperature
range
Cooling ℃5~25℃
Heating ℃25~60℃
Sanitary hot water ℃40~60℃
Note:
Water flow 0.172m^3/(h·kW)
Integrated value takes into consideration the capacity drop during frosting and defrosting periods.
The capacity is tested in
free frequency situation.

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Model
Power supply V/Ph/Hz
380~415/3/50
Performance data
kW 17.28
kW 4.75
kW/kW 3.64
kW 15.36
kW 5.91
kW/kW 2.6
kW 16.96
kW 5.06
kW/kW 3.35
kW 14.72
kW 6.21
kW/kW 2.37
Seasonal space
heating energy eff.
Class (average
climate general)
A++ (ETA%: 159.7)
A++ (ETA%: 232.1)
4.07
3.38
Sound pressure level dB(A) 70
Physical data
Dimension
(W×H×D) mm
1014×1430×450
Packing (W×H×D) mm
1095×1545×485
Net/gross weight kg 124/138
Compressor
Brand GMCC
Type
Rotary DC Inverter
Model
EKTQ420D1UMU
Poles 6
Speed rps 12~120
Oil
POE/1400mL
Outdoor fan
Brand Yongan
Motor type
Brushless DC motor
Model
DR-310-100-8-2
Number of fans 2
Air flow m3/h 6100
Number of rows 2
FHOF-WHS-160CE3-3F
Heating
(A7°
Heating
(A7°
Heating
(A2°
C/W35°C)
C/W55°C)
C/W35°C)
Heating
(A2°C/W55°C)
Capacity
Power input
COP
Capacity
Power input
COP
Capacity
Power input
COP
Capacity
Power input
COP
water outlet W 35℃
water outlet W 55℃
water outlet W 35℃
water outlet W 55℃
SCOP

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Air side heat
exchanger
Tube pitch(a)×row
pitch(b) mm 25×21.7
Tube dia. and type
Φ9.52 inner grooved
copper
Fin space mm 1.6
Fin type (code)
Hydrophilic
aluminum
Coil
length×height×width mm 995×1350×43.3
Number of circuits 7
Piping connections
Liquid pipe Type Flaring
Dia.(OD) mm Φ9.52
Gas pipe Type Flaring
Dia.(OD) mm Φ15.88
Max. piping length m 50
Max. height
difference
Outdoor unit upside m 20
Outdoor unit
downside m 20
Refrigerant
Type R32
Quantity kg 3.8
Throttle type EXV
Additional charge g (Total pipe length - 5)m *30g/m
Ambient temperature
range
Cooling ℃-5～46℃
Heating ℃-28～43℃
Sanitary hot water ℃-28～43℃
Water temperature
range
Cooling ℃5~25℃
Heating ℃25~60℃
Sanitary hot water ℃40~60℃
Note:
Water flow 0.172m^3/(h·kW)
Integrated value takes into consideration the capacity drop during frosting and defrosting periods.
The capacity is tested in free frequency situation.

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2.2
Hydronic box
Power supply V/Ph/
Hz 220~240/1/50 220~240/1/50
Leaving
water
temperatur
e
Space heating ℃25~60 25~60
Space cooling ℃5~25 5~25
Domestic hot water ℃40~60 40~60
Max. power input kW 3.6 3.6
Max. current input A 17 17
Sound power level dB(A) 45 45
Dimension (W×H×D) mm 490*910*340 490*910*340
Packing (W×H×D) mm 620*1105*425 620*1105*425
Net/gross weight kg 48/56 48/56
Water
circuit
Piping
connectio
n Dia.
Outlet mm DN32 DN32
Inlet mm DN32 DN32
Safty
valve kPa 600 600
Drainage pipe Dia. mm DN20 DN20
Expansion
tank
Volume L 2 2
Max. water
pressure kPa 800 800
Pre pressure kPa 150 150
Water
side heat
exchanger
Type Plate type Plate type
Volume L 1.22 1.22
Water
pump
Brand wilo wilo
Model Para 25/9 Para 25/9
Pump head m 9 9
Refrigeran
t circuit
Liquid side Dia. mm Φ9.52 Φ9.52
Gas side Dia. mm Φ15.88 Φ15.88
Back-up
E-heater
Power supply V/Ph/
Hz
230V/1Ph/50Hz
230V/1Ph/50H
z
Capacity kW 3kW 3kW
Step 1 1
Max. power input kW 3kW 3kW
Max. current input A 13.6A 13.6A
FHIF-WHS-160CE3
Hydronic module
FHIF-WHS-120CE3

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3. Features
3.1 Outdoor unit
Compact structure design, flexible installation.
Long piping up to 30 meter with height difference 20 meter, no need extra refrigerant within 5m
refrigerant pipe length.
Heating, cooling & domestic hot water mode, total heat solution.
Pic.3-1 Total heat solution
Wide operation ambient temperature range & Wide water outlet temperature range
Pic.3-2 Ambient temperature range

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Pic.3-3 Water outlet temperature range
DC inverter technology to guarantee optimal operational reliability and efficiency. Offers heating
capacity of 85% at -15°C thanks to the large heat exchanger and large compressor.
Seasonal space heating energy efficiency is up to A++ @35℃ and @55℃.
3.2 Hydronic module
All hydronic components are pre-assembled, easy for installation.
Backup E-heater for additional heating during extremely cold outdoor temperatures. The capacity
of E-heater is adjustable.
Standard drain pan in the hydronic box, no worry about condensate water.
Plate heat exchanger enhances the efficiency.
Standard with water flow switch, inverter water pump, pressure gauge and expansion tank.

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4. Operation range
Pic.4-1 Heating mode operation range
Pic.4-2 Cooling mode operation range

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Pic.4-3 Domestic hot water mode operation range

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5. Sound pressure level
Outdoor unit:
1 m
1.2 m
Front sideRear side
Microphone
1 m
(body height +1 )/2 m
Microphone
Pic.5-1 Outdoor unit sound test diagram
Model Sound pressure level (dB(A))
57
59
Hydronic module:
Pic.5-2 Hydronic module sound test diagram
Model Sound pressure level (dB(A))
32
32
FHOF-WHS-100CE3
FHOF-WHS-160CE3-3F
FHIF-WHS-120CE3
FHIF-WHS-160CE3

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6. Accessories
Accessories for hydronic module
Name Pic. QTY Notes
Wired controller communication
wire
125m 5-core communication
wire
Y-type filter 1Connected in water inlet
pipe
Wall mounted board 1
Temperature sensor 15kΩ, for DHW tank
Cable ties 3
Wired controller cover 1
Outdoor unit installation &
owner’s manual
1
Hydronic module installation &
owner’s manual
1
Wired controller installation &
owner’s manual
1