Manuals / Toshiba / Household Appliance / Heat Pump

Toshiba HWS-802XWHM3-E, HWS-802XWHT6-E, HWS-802H-E, HWS-3001CSHM3-E(-UK), HWS-2101CSHM3-E(-UK)

Models: HWS-1402XWHT9-E HWS-1402XWHM3-E HWS-1402XWHT6-E HWS-1501CSHM3-E(-UK) HWS-1402H-E HWS-2101CSHM3-E(-UK) HWS-3001CSHM3-E(-UK) HWS-802XWHM3-E HWS-802H-E HWS-802XWHT6-E

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[A09] Error Overheat prevention thermostat failure (Hot water supply/Heating operation)

Start

Water cycle contains water	No
Water cycle contains water
Yes
Flow switch is normal	No
Flow switch is normal
Yes
At normal temperature,	No
overheat preventive thermostat
is normal
Yes

Put water into water circuit (Recommended: 1 - 2 Bar)

Replace flow switch

Replace heater unit exchanger air vent valve

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).

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Toshiba HWS-802XWHM3-E, HWS-802XWHT6-E, HWS-802H-E, HWS-3001CSHM3-E(-UK), HWS-2101CSHM3-E(-UK), HWS-1402H-E, HWS-1402XWHT6-E

Contents

Outdoor Unit AIR TO WATER HEAT PUMPHydro Unit Hot Water CylinderContents 9 Method of Defect Diagnosis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . DANGER 1 SAFETY PRECAUTIONSAbout symbols 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 R410ACopper pipe 2-2.Installing refrigerant pipe2-2-1.Steel pipe and joint Table 2-1Wall thickness of copper pipe2-2-2.Processing of piping materials Flare and precautionsFlare dimension FigureOuter diameter mm Flare connecting procedure and precautionsNominal diameter Tightening torque N•m kgf•m2-3-1.Necessary tools 2-3.ToolsGeneral tools Conventional tools are available 2-4.Recharging of refrigerant Fig. 2-4-1Configuration of refrigerant chargingCylinder with siphon Why flux is necessary 2-5.Brazing of pipesLow temperature brazing metal Characteristics of fluxFig Prevention of oxidation during brazing Specifications Unit name HWS-802XWHM3-E, 802XWHT6-E 4 Outside Drawing4-1.Hydro unit HWS-1402XWHM3-E, 1402XWHT6-E, 1402XWHT9-EOutdoor unit HWS-802H-EHWS-1102H-E, 1402H-E HWS-3001CSHM3-E-UKHWS-2101CSHM3-E-UK 4-3.Hot water cylinderHWS-1501CSHM3-E-UK HWS-1402XWHT9-E Wiring DiagramHydro Unit HWS-802XWHT6-E5-2.Outdoor Unit Control board5-3.Hot Water Cylinder Unit 6-1.Hydro Unit Key Electric Component RatingHWS-802XWHM3-E, 802XWHT6-E Component name HWS-1402XWHM3-E, 1402XWHT6-E, 1402XWHT9-EModel name Type name6-2.Outdoor Unit HWS-802H-EHWS-1102H-E, 1402H-E 6-3.Hot Water Cylinder Unit 6-4.Water Heat Exchange Control Board 6-5.Outdoor Control Board HWS-802H-EHWS-1102H-E, 1402H-E System DiagramSystem Diagram 7-1.WaterInstallation example of water circuit Refrigerant 7-2.Refrigeration Cycle System DiagramHWS-802XWHM3-E, 802XWHT6-E/802H-E R410A ... 1.8 kg8 Operational Description ItemItem Item Item TTW sensor ItemOperation flow and applicable data, etc Hot water cylinder unit2 Heating operation 3 Cooling operation Operation Operation flow and applicable data, etc Switches to Hot waterItem HOT WATER button set to ON8 Anti bacteria ANTI BACTERIA operation 9 Night set back NIGHT SET BACK operation 11 AUTO operation 12 Nighttime low-noiseoperation Operation flow and applicable data, etc Hz signal correctionItem Hydro unit1-2High temperature release control 2 Heater control 2 Control at the time of heating heater operation 3 Circulation pump control Flow rateL/min Operation flow and applicable data, etcFlow rateL/min Operation flow and applicable data, etc Item8-1Pipingfreeze prevention control 8-2Piping freeze prevention control 3. Hydro Unit TD C ItemOperation flow and applicable data, etc 111 109 106 103 96Operation flow and applicable data, etc SettingsItem Current degradationTL C ItemOperation flow and applicable data, etc WE tapTE C 2tap/20 secs to W1 24 Stop time count ItemOperation flow and applicable data, etc 2tap/20 secs to W1 21 1tap/20 secs to W14-wayvalve CompressorOutdoor fan Outdoor PMV 0pulsewhen TO sensor fails UsualHeating TC Cooling TL C ItemOperation flow and applicable data, etc a b c d e9 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 exchangePage Page Defect mode detected by the outdoor unit Page Page Defect mode detected by the remote control A01 Error Pump flow determination 9-4.Diagnosis flow chart for each error code9-4-1.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 F04 Error TD sensor failure F03 Error TC sensor failureF06 Error TE sensor failure F08 Error TO sensor failure F07 Error TL sensor failureF10 Error TWI sensor failure F14 Error TTW sensor failure F11 Error TWO sensor failureF17 Error TFI sensor failure F18 Error THO sensor failure F19 Error THO sensor detach failureF20 Error TFI detach failure F23 Error Lo pressure sensor detach failureL07 Error F29 Error EEPROM failureF30 Error Enhanced IC failure L09 ErrorDiagnosis procedure for each check code 9-4-2.Outdoor Unit Failure DetectionCheck 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 sensors9-5-1.Operation check mode 9-5.Operation check by PC board switchOperation check mode 9-6.Brief method for checking the key components 9-6-1.Hydro unit9-6-2.Outdoor unit 10Hydro unit and Outdoor Unit Settings Hydro unit 1. Hydro unit Setting2. Hydro unit Function Code Setting Details Function code tableItem First shipmentDetails Remote controller function code tableItem Fist shipment1, 4 1, 4 2,3. Trial Operation 4. Auto Curve Setting 5. Time Setting 1 46. Scheduled Operation Setting 3,6,77. Frost Protection Setting 2,3 1,38. NIGHT Operation Setting 3 2,42 3 4 9. Anti Bacteria Setting3 2,4 51 10. Hot Water Boost Setting 11. Nighttime Low-noiseSetting12. Forced Defrosting Setting 13. Rated Operation SettingPress the TEST Sensor temperature display callingbutton for temperature setting and CLbutton returns to the normal 15. Failure History Calling Function3 Pressing the TEST displayOutdoor unit 16 Outdoor Unit Setting For operation Note: All the LEDs have no color when off1 Overview For displaySwitch 2 LED indication switching SW800, SW803 operation2 -1.Indication switching list Function and details2 -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 UnitWork procedure Remarks Work procedureElectric parts assembly Relay boardExchange parts name Exchange parts name Work procedureRemarks Pump Work procedureRemarks fixingFlow switch Work procedureFlow switch Exchange parts nameExchange parts name Exchange parts name Exchange parts Work procedure2.Outdoor Unit 2-1. HWS-802H-E RemarksExchange parts name Exchange parts Work procedureCompressor lead, Relay connector RemarksExchange parts name name name Remarks Work procedureExchange parts SW804name 2-2. HWS-1102H-E, 1402H-E Exchange parts name Exchange parts name name name Remarks Work procedureExchange parts Recess Pulse motor valve body12Periodic Inspection Items <Inspection items>13Part Exploded View, Part List Hydro UnitPage Number of pieces per unit Outdoor Unit HWS802H-ESafety Sensor assembly 701 F6 TS, TE, TD sensor Inverter Assembly HWS-802H-EReactor Control board assembly Bushing Collar 707 FuseSafety Outdoor Unit HWS-1102H-E, 1402H-E Safety 707 Fuse Inverter Assembly HWS-1102H-E, 1402H-EReactor Control board assembly Bushing Collar Terminal 3PSafety