AIR TO WATER HEAT PUMP
Hydro Unit
Outdoor Unit
Hot Water Cylinder
Contents
9 Method of Defect Diagnosis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1 SAFETY PRECAUTIONS
About symbols
DANGER
DANGER
•Do not disassemble or modify the parts also
• Failure to do so may cause an electric shock
2-1.Safety During Installation and Service
2 NEW REFRIGERANT R410A
2-2.Installing refrigerant pipe
2-2-1.Steel pipe and joint
Copper pipe
Table 2-1Wall thickness of copper pipe
Flare and precautions
Flare dimension
2-2-2.Processing of piping materials
Figure
Flare connecting procedure and precautions
Nominal diameter
Outer diameter mm
Tightening torque N•m kgf•m
2-3.Tools
2-3-1.Necessary tools
General tools Conventional tools are available
2-4.Recharging of refrigerant
Fig. 2-4-1Configuration of refrigerant charging
Cylinder with siphon
2-5.Brazing of pipes
Low temperature brazing metal
Why flux is necessary
Characteristics of flux
Fig Prevention of oxidation during brazing
Specifications
Unit name
4 Outside Drawing
4-1.Hydro unit
HWS-802XWHM3-E, 802XWHT6-E
HWS-1402XWHM3-E, 1402XWHT6-E, 1402XWHT9-E
Outdoor unit
HWS-802H-E
HWS-1102H-E, 1402H-E
4-3.Hot water cylinder
HWS-3001CSHM3-E-UKHWS-2101CSHM3-E-UK
HWS-1501CSHM3-E-UK
Wiring Diagram
Hydro Unit
HWS-1402XWHT9-E
HWS-802XWHT6-E
5-2.Outdoor Unit
Control board
5-3.Hot Water Cylinder Unit
Key Electric Component Rating
6-1.Hydro Unit
HWS-802XWHM3-E, 802XWHT6-E
HWS-1402XWHM3-E, 1402XWHT6-E, 1402XWHT9-E
Model name
Component name
Type name
6-2.Outdoor Unit
HWS-802H-E
HWS-1102H-E, 1402H-E
6-3.Hot Water Cylinder Unit
6-4.Water Heat Exchange Control Board
6-5.Outdoor Control Board
HWS-802H-E
HWS-1102H-E, 1402H-E
Diagram
System Diagram
System
7-1.Water
Installation example of water circuit
7-2.Refrigeration Cycle System Diagram
HWS-802XWHM3-E, 802XWHT6-E/802H-E
Refrigerant
R410A ... 1.8 kg
8 Operational Description
Item
Item
Item
Item
Item
Operation flow and applicable data, etc
TTW sensor
Hot water cylinder unit
2 Heating operation
3 Cooling operation
Operation
Switches to Hot water
Item
Operation flow and applicable data, etc
HOT WATER button set to ON
8 Anti bacteria ANTI BACTERIA operation
9 Night set back NIGHT SET BACK operation
11 AUTO operation
12 Nighttime low-noiseoperation
Hz signal correction
Item
Operation flow and applicable data, etc
Hydro unit
1-2High temperature release control
2 Heater control
2 Control at the time of heating heater operation
3 Circulation pump control
Operation flow and applicable data, etc
Flow rateL/min
Flow rateL/min
Item
Operation flow and applicable data, etc
8-1Pipingfreeze prevention control
8-2Piping freeze prevention control
3. Hydro Unit
Item
Operation flow and applicable data, etc
TD C
111 109 106 103 96
Settings
Item
Operation flow and applicable data, etc
Current degradation
Item
Operation flow and applicable data, etc
TL C
WE tap
Item
Operation flow and applicable data, etc
TE C 2tap/20 secs to W1 24 Stop time count
2tap/20 secs to W1 21 1tap/20 secs to W1
Compressor
Outdoor fan
4-wayvalve
Outdoor PMV 0pulse
when TO sensor fails
Usual
Item
Operation flow and applicable data, etc
Heating TC Cooling TL C
a b c d e
9 Method of Defect Diagnosis
9-1.Matters to be confirmed first
9-3.Outline of the determination diagram
9-3-4.How to diagnose by error code
Defect mode detected by the water heat exchange
Page
Page
Defect mode detected by the outdoor unit
Page
Page
Defect mode detected by the remote control
9-4.Diagnosis flow chart for each error code
A01 Error Pump flow determination
9-4-1.Hydro unit failure detection
Page
Page
A04 Error Freeze prevention control
A05 Error Piping freeze prevention control
Page
Page
Page
A11 Error Release protection operation
Page
E04 Error
F03 Error TC sensor failure
F04 Error TD sensor failure
F06 Error TE sensor failure
F07 Error TL sensor failure
F08 Error TO sensor failure
F10 Error TWI sensor failure
F11 Error TWO sensor failure
F14 Error TTW sensor failure
F17 Error TFI sensor failure
F18 Error THO sensor failure
F19 Error THO sensor detach failure
F20 Error TFI detach failure
F23 Error Lo pressure sensor detach failure
F29 Error EEPROM failure
F30 Error Enhanced IC failure
L07 Error
L09 Error
Diagnosis procedure for each check code
9-4-2.Outdoor Unit Failure Detection
Check code
Any of the following abnormality may occur
Check code
Check code
Check code
Check code
Check code
Check code
Check code
TC, TWI, TWO, TFI, TTW, TE, TS, TO sensors
TD, TL sensors
9-5.Operation check by PC board switch
9-5-1.Operation check mode
Operation check mode
9-6.Brief method for checking the key components
9-6-1.Hydro unit
9-6-2.Outdoor unit
10Hydro unit and Outdoor Unit Settings
Hydro unit 1. Hydro unit Setting
2. Hydro unit Function Code Setting
Function code table
Item
Details
First shipment
Remote controller function code table
Item
Details
Fist shipment
1, 4 2,
1, 4
3. Trial Operation
4. Auto Curve Setting
5. Time Setting
1 4
6. Scheduled Operation Setting
3,6,7
7. Frost Protection Setting
2,3 1,3
8. NIGHT Operation Setting
3 2,4
9. Anti Bacteria Setting
2 3 4
3 2,4 51
10. Hot Water Boost Setting
11. Nighttime Low-noiseSetting
12. Forced Defrosting Setting
13. Rated Operation Setting
Sensor temperature display calling
button for temperature setting
Press the TEST
and CL
15. Failure History Calling Function
3 Pressing the TEST
button returns to the normal
display
Outdoor unit 16 Outdoor Unit Setting
Note: All the LEDs have no color when off
1 Overview
For operation
For display
2 LED indication switching SW800, SW803 operation
2 -1.Indication switching list
Switch
Function and details
2 -2.Abnormality indication
Current value for the outdoor unit only is shown
<Special operation>
CN701 Between 1 to 4 Voltage = Approx.
11How to Exchange Main Parts
1. Hydro Unit
Work procedure
Work procedure
Electric parts assembly
Remarks
Relay board
Exchange parts name
Work procedure
Exchange parts name
Remarks
Work procedure
Remarks
Pump
fixing
Work procedure
Flow switch
Flow switch
Exchange parts name
Exchange parts name
Exchange parts name
Work procedure
2.Outdoor Unit 2-1. HWS-802H-E
Exchange parts
Remarks
Exchange parts
name
Work procedure
Compressor lead, Relay connector
Exchange parts
Remarks
Exchange parts
name
name
name
Work procedure
Exchange parts
Remarks
SW804
name
2-2. HWS-1102H-E, 1402H-E
Exchange parts
name
Exchange parts
name
name
name
Work procedure
Exchange parts
Remarks
Recess Pulse motor valve body
12Periodic Inspection Items
<Inspection items>
13Part Exploded View, Part List
Hydro Unit
Page
Number of pieces per unit
Outdoor Unit
HWS802H-E
Safety
Inverter Assembly HWS-802H-E
Reactor Control board assembly Bushing Collar
Sensor assembly 701 F6 TS, TE, TD sensor
707 Fuse
Safety
Outdoor Unit HWS-1102H-E, 1402H-E
Safety
Inverter Assembly HWS-1102H-E, 1402H-E
Reactor Control board assembly Bushing Collar
707 Fuse
Terminal 3P
Safety