Manuals / Toshiba / Household Appliance / Heat Pump

Toshiba HWS-1402XWHM3-E, HWS-802XWHT6-E, HWS-802H-E Heating operation, Element Short circuit

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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Check code	Outdoor LED		Check and Action procedure
Check code	indication		(No specific description indicates outdoor unit parts.)
	indication		(No specific description indicates outdoor unit parts.)

[P20]	<Indication 1> <Indication 2>	[Hi pressure protection operation]
						No
			Service valve is fully opened.			No		Open fully service valve
			Service valve is fully opened.					Open fully service valve
			Yes

						Heating season
						Heating season
			Reset the power source and perform			Heating operation
			a trail operation according to the season.

			Cooling season
			Cooling operation
			Outdoor TL sensor is normal.			No
						No	Replace sensor

			(Measure resistance)
			(Measure resistance)
			Yes
			Yes

			Outdoor fan is free from crack			No	Check outdoor fan
			Outdoor fan is free from crack				Check outdoor fan
			or looseness.				If defective, replace or tighten it
			Yes
			Yes

			Outdoor fan operates normally.			No	Check the same item as
			Outdoor fan operates normally.				Check the same item as
			Yes				those for [P22] abnormality


			Something prevents outdoor unit			Yes
			heat exchange			Yes	Remove the disturbing
			heat exchange				Remove the disturbing
			- Clogged heat exchanger				element
			- short circuit


			No

Check for refrigerant overcharged, clogged cycle, pipe break, abnormal overload, etc. If defective, repair defective portion

	Something prevents heat
	exchange of hydro unit.	Yes
	exchange of hydro unit.		Remove the
	- Clogged filter

			disturbing element
	- Clogged heat exchanger		disturbing element
	- Clogged heat exchanger
	- Short circuit
	No

Check for refrigerant overcharged, clogged cycle, pipe break, abnormal overload, etc. If defective, repair defective portion

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Image 98

Toshiba HWS-1402XWHM3-E Heating operation, Yes Outdoor fan operates normally Check the same item as, Element Short circuit

Contents

HWS-802XWHT6-E HWS-1102H-E HWS-1402XWHM3-E HWS-1402H-E Hydro Unit Outdoor UnitHot Water Cylinder HWS-1501CSHM3-E-UK HWS-2101CSHM3-E-UK HWS-3001CSHM3-E-UK Contents Method of Defect Diagnosis ∗ Ground wire of class D grounding About symbols∗ For details, see the schematic About indication ∗ For details, see the parts price list No modification Do not modify the unitDo not make additional charge of the refrigerant Failure to do so may cause an electric shock ∗ Thick gloves such as cotton work gloves Safety During Installation and Service NEW Refrigerant R410A Copper pipe Installing refrigerant pipeSteel pipe and joint Wall thickness of copper pipe 3 Flare processing related dimension for R410A Flare and precautionsFlare dimension 4 Dimension of flare for R410A and flare nut Flare connecting procedure and precautions 5 Tightening torque of flare for R410A Reference values General tools Conventional tools are available ToolsNecessary tools Gauge manifold Recharging of refrigerant For refrigerant charging, see the figure below Cylinder without siphon Gauge manifold Outdoor unit Refrigerant cylinder Flux Brazing of pipesMaterials of brazing Brazing Prevention of oxidation during brazing Robber plug Specifications Page Outside Drawing Hydro unit HWS-802H-E HWS-1102H-E, 1402H-E HWS-3001CSHM3-E-UKHWS-2101CSHM3-E-UK HWS-1501CSHM3-E-UK Wiring Diagram Block of the outdoor unit Control board Hot Water Cylinder Unit Model name Component name Type name Rating M3-E T6-E Key Electric Component RatingHWS-802XWHM3-E, 802XWHT6-E Model name Component name Type name Rating M3-E T6-E T9-E US-622KXTMQO-SS Component name Type name RatingCAM-MD12TF-15 OFF = 125 ± 4 C, on = 90 ± 5 C Thermal cut-out Model name Component nameType name Rating CSH Water Heat Exchange Control Board D503 Green, Outdoor = Hydro P01Red P02White Earth lead wire P09 BlackOutdoor Control Board F03 250 V, 10 a F700250V,3.15A System DiagramSystem Diagram Water Installation example of water circuit HWS-1402XWHM3-E, 1402XWHT6-E, 1402XWHT9-E/1102H-E, 1402H-E Refrigeration Cycle System DiagramHWS-802XWHM3-E, 802XWHT6-E/802H-E Outdoor unit Hydro unit Operational Description Hot water supply Temperature setting Operation Remote control settingsHeating Temperature setting Cooling Temperature setting Backup heater control Hot water temperature 40C to 75CHeating temperature 20C to 55C Hydro unit Outdoor unit Cooling temperature 10C to 25CTransmit Hot water cylinder unit Operation flow and applicable data, etcTTW sensor TWI Pump priority Pressing the ZONE1, 2 button and then Operation ModeStarts a cooling operation Zone Operation with heating priority Simultaneous operations of hot water supply and cooling Heating side Switches to Hot water Supply operationHOT Water button set to on HOT Water Boost button set to on 75C Hot water operation Another 30 minutes can be set with FC0B HOT Water button set to onAnti bacteria Anti Bacteria operation Supply heater Night set back Night SET Back operation Operation 35B 30C 25D 20E Nighttime low-noise operation Operation Temperature settings Water outlet temperature Hz signal correctionController set temperature Inverter output change TC TWO TC=TWO THO Keep Keep TSCF-4 TSCF-0TSCF-2 Circulation pump control Hydro Unit Non-interlocked with the built-in pump SW1 Flow rateL/minSW3 SW2 SW3 Heating operation Night Set Back 1Piping freeze prevention controlAutomatic restart control TWI, TWO, THO Piping freeze prevention controlTWO Hydro Unit Room temperature thermostat control Option TCB-PCMO3E PMV Pulse motor valve control Current release control Settings YesCurrent degradation Main circuit control current TL C WE tap + 1 tap/20 secs Number of rotation hold For 1102H-E Hot water supply and heating fan controlFor 802H-E For 1402H-E OFF Heating operation startsInside brackets For 802H-E Output equal to 40W Not energizedIntermittently energized Continuously energized 802H-E 1102H-E, 1402H-E Heating Cooling TC TWO+2 61C Procedure of defect diagnosis Remark Method of Defect Diagnosis Matters to be confirmed first Check the power supply voltageAbout the installation of the temperature sensor 1 Non-defective operation How to determine from the check code on the remote control Outline of the determination diagramProcedure of defect diagnosis How to cancel a check code on the remote controller 2TWO How to diagnose by error codeDefect mode detected by the water heat exchange 3TWI Diagnostic functional operation Number Diagnostic functional operation Number Defect mode detected by the outdoor unit Diagnostic functional operation Number Diagnostic functional operation Number Determination and action Defect mode detected by the remote controlDiagnostic functional operation Hydro unit failure detection Diagnosis flow chart for each error codeA01 Error Pump flow determination Replace TWI, TWO, and THO sensors A02 Error Temperature rise and error short circuitReplace flow switch Yes Water outlet Yes TTW 85C is detected Replace TTW sensor A03 Error Temperature rise and error short circuitStart A04 Error Freeze prevention control A05 Error Piping freeze prevention control Water circuit Yes Lower set temperatureRemove waste Place buffer tank Cooling overload operation Yes Raise set temperatureWhere frost remains Yes Defrost outdoor unit Water cycle contains water Put water into water circuit Recommended 1 2 Bar TWI sensor is Attach TWI sensor A11 Error Release protection operationSecure water Waste stuck inside Remove waste A12 Error Heating or Hot water supply heater failure E04 Error F06 Error TE sensor failure F03 Error TC sensor failureF04 Error TD sensor failure Yes Replace water heat exchange control board F10 Error TWI sensor failure F07 Error TL sensor failureF08 Error to sensor failure F17 Error TFI sensor failure F11 Error TWO sensor failureF14 Error TTW sensor failure F18 Error THO sensor failure F19 Error THO sensor detach failure Lo pressure sensor Yes Is detached CN207 When operation F20 Error TFI detach failureF23 Error Lo pressure sensor detach failure TFI s ensor Is attached to pipe L07 Error F29 Error Eeprom failureF30 Error Enhanced IC failure L09 Error Diagnosis procedure for each check code Outdoor Unit Failure Detection Compressor is normal Yes Board side Wiring connectionIs normal Check and correct Lock compressor Replace it Yes Check outdoor control board If defective, replace it Heat sink temperature sensor TH failure → See F13 detailsCommunication failure between MCUs Eeprom failure → See F31 details Power voltage abnormally Yes Outdoor control Deal with short circuit Short circuit, etc YesHeat sink overheat failure Is cleared, Blower is not blocked Way valve invert failure SW804 SW801 Element Short circuit Heating operationYes Outdoor fan operates normally Check the same item as Correct wiring Replace outdoor board Power voltage is normal Check wiring 230ACV ±Diagram Yes Replace fan motor TL sensor resistance characteristic is normal Characteristic tableTL sensor connector CN604 is connected Correct TE sensor 100 Suction temperature sensor TS failureTS sensor resistance characteristic is normal TD, TL sensors 101TC, TWI, TWO, TFI, TTW, TE, TS, to sensors Operation check mode Operation check by PC board switchOperation check mode Rotary Check contents Remark Switch Hydro unit Component name Check procedureBrief method for checking the key components 103 802H-E 32.6 ± 3.3 Ω Outdoor unit104 14.8 ± 1.5 Ω 105 10Hydro unit and Outdoor Unit SettingsHydro unit Hydro unit Setting Hydro unit Function Code Setting 106 107 Details First shipment Nighttime low-noise end time 108Details Fist shipment Trial Operation 109 110 Auto Curve SettingSet temperature A40 B35 C30 D25 E20 20 T1 TSC-F Time Setting 111 112 Scheduled Operation SettingSet temperature, day , and time Frost Protection Setting 113 Night Operation Setting 114 Anti Bacteria Setting 115 116 Hot Water Boost SettingNighttime Low-noise Setting 117 Forced Defrosting SettingRated Operation Setting Display Function of Set Temperature and Other Settings 118 Failure History Calling Function 119 Outdoor unit Outdoor Unit Setting 120 121 122 Function and details 123 Current Compressor PMV openness Operation Pulse Frequency Item setting Temperature sensor124 LED indication SW804 Operation when press button switch SW801 is pressed125 SW804 Operation when press button switch SW801 is pressed 126 Hydro Unit 11How to Exchange Main PartsWork procedure Remarks 127 Remote Remote controller cable128 Controller holder Relay board Electric parts assembly129 MgSW 130 Expansion vessel Exchange parts name Work procedure Remarks131 Fixing 132Pump Board Manometer Exchanger inlet pipe so that the wire is place on133 134 135 Outdoor Unit 2-1. HWS-802H-E 136 137 Lead Remove the power source cable from the power138 CN202 Black Fan motor lead Binding tie Compressor lead, Relay connector 139 Flange nut 140Propeller fan Turn it right to loosen Fan motor 141 142 143 Valve body 144Spring Pulse motor 145 146 Heat exchanger Inverter assembly147 Valve fixing board Reactor lead CN05 White 148Case thermostat, fan motor Reactor lead Name Electric parts Reactor Replacement 1Perform the step149 Reactor lead Binding tie Reactor body 150 Fixing rubber Projection/Refrigerant cycle side Fan motor 151 Compressor nut 3 nuts 152 Recess Pulse motor valve body Pulse motor valve coil 1. How to remove 1Perform the step153 Positioning Motorized Projection Control valve coil 154 12Periodic Inspection ItemsInspection items 13Part Exploded View, Part List 155 156 157 HWS802H-E 158Outdoor Unit 002 159 160 Inverter Assembly HWS-802H-ESensor assembly 701 F6 TS, TE, TD sensor TD, TL sensor 161 162 Outdoor Unit HWS-1102H-E, 1402H-E 163 TS, TE, to sensor Inverter Assembly HWS-1102H-E, 1402H-E164 Reactor 16543158190 4316V357 166