Toshiba HWT-1102S21ST9W-E(TR) User Manual

1
AIR TO WATER HEAT PUMP
Service Manual
FILE No. AE0-2203W
-All In One Type-
Model name:
Hydro unit
HWT-602S21SM3W-E(TR)
HWT-602S21SM6W-E(TR)
HWT-602S21ST6W-E(TR)
HWT-602S21MM3W-E(TR)
HWT-602S21MM6W-E(TR)
HWT-602S21MT6W-E(TR)
HWT-1102S21SM3W-E(TR)
HWT-1102S21SM6W-E(TR)
HWT-1102S21ST6W-E(TR)
HWT-1102S21ST9W-E(TR)
HWT-1102S21MM3W-E(TR)
HWT-1102S21MM6W-E(TR)
HWT-1102S21MT6W-E(TR)
HWT-1102S21MT9W-E(TR)
HWT-1402S21SM3W-E(TR)
HWT-1402S21SM6W-E(TR)
HWT-1402S21ST6W-E(TR)
HWT-1402S21ST9W-E(TR)
HWT-1402S21MM3W-E(TR)
HWT-1402S21MM6W-E(TR)
HWT-1402S21MT6W-E(TR)
HWT-1402S21MT9W-E(TR)
Outdoor unit
HWT-401HW-E(TR)
HWT-601HW-E(TR)
HWT-801HW-E(TR)
HWT-1101HW-E(TR)
HWT-1401HW-E(TR)
HWT-801HRW-E
HWT-1101HRW-E
HWT-1401HRW-E
HWT-801H8W-E
HWT-1101H8W-E
HWT-1401H8W-E
HWT-801H8RW-E
HWT-1101H8RW-E
HWT-1401H8RW-E

Toshiba HWT-1102S21ST9W-E(TR) Specifications

General

Brand	Toshiba
Model	HWT-1102S21ST9W-E(TR)
Category	Heat Pump
Language	English

Summary

Specifications

Refrigeration Cycle and Water System Diagrams

Water System Diagram

Refrigeration Cycle System Diagram

Wiring Diagrams

Key Electric Component Ratings

Refrigerant R32 Safety and Handling

Safety During Installation and Servicing

Covers safety precautions for installing and servicing refrigerant systems.

Refrigerant Piping Installation

Details the procedures and materials for installing refrigerant piping.

Recharging Refrigerant

Provides the procedure for recharging refrigerant into the system.

Brazing of Pipes

Explains the process and materials for brazing refrigerant pipes.

Instructions for Re-using R22 or R407C Piping

Charging Additional Refrigerant

General Safety Precautions for R32 Refrigerant

Essential safety measures specific to R32 refrigerant.

Method of Failure Diagnosis

Matters to Confirm First

Initial checks to perform before diagnosing failures.

Outline of Determination Diagram

Diagnosis Flow Charts by Check Code

Detailed flow charts for diagnosing specific check codes.

Failure Modes Detected by Outdoor Unit

TD Sensor Failure

Troubleshooting steps for discharge temperature sensor (TD) failure.

TE Sensor Failure

Troubleshooting steps for heat exchanger temperature sensor (TE) failure.

TL Sensor Failure

Troubleshooting steps for heat exchanger temperature sensor (TL) failure.

TO Sensor Failure

Troubleshooting steps for outdoor temperature sensor failure.

TS Sensor Failure

TH Sensor Failure

TE and TS Sensor Wrong Wiring

PD Sensor Failure

Compressor Breakdown

Troubleshooting for compressor breakdown after operation starts.

Compressor Lock

Diagnosis for over-current detection after compressor start-up.

Failure in Current Detection Circuit

Troubleshooting for failures in the current detection circuit.

Case Thermostat Operation Failure

Communication Failure Between Outdoor MCUs

Converter Circuit Failure

Discharge Temperature Failure

High Pressure Switch Failure

Troubleshooting for high pressure switch failure.

Power Supply Voltage Failure

Diagnoses issues related to power supply voltage being too high or low.

Heat Sink Overheating Failure

Detection of Gas Leak

Steps to detect and diagnose refrigerant gas leaks.

4-Way Valve Inversion Failure

High Pressure Protection Operation

Outdoor Fan System Failure

Short-Circuit of Compressor Drive Element

Troubleshooting for abnormal short circuits of compressor drive elements.

Compressor Motor Position Detection Circuit Trouble

Hydro Unit Failure Detection

A01: Flowing Quantity Failure

Troubleshooting flow chart for issues with water flow quantity.

A02: Temperature Increase Failure (Heating)

Troubleshooting flow chart for temperature increase failures during heating.

A03: Temperature Increase Failure (Hot Water Supply)

Troubleshooting flow chart for temperature increase failures during hot water supply.

A04: Antifreeze Operation (1)

Troubleshooting flow chart for antifreeze operation issues.

A05: Piping Antifreeze Operation

Troubleshooting flow chart for pipe antifreeze operations.

A08: Low Pressure Sensor Operation Failure

Troubleshooting flow chart for low pressure sensor failures.

A09: Overheat Protection Operation

Troubleshooting flow chart for overheat protection operation.

A10: Antifreeze Operation (2)

Troubleshooting flow chart for antifreeze operation issues.

A11: Operation of Release Protection

Troubleshooting flow chart for release protection operations.

A12: Heating, Hot Water Heater Failure

Troubleshooting flow chart for heating and hot water heater failures.

A13/A14: Pump Failure

Troubleshooting flow charts for pump failures (zone 1 and zone 2).

E04: Communication Failure (Hydro Unit & Outdoor Unit)

F03: TC Sensor Failure

F04: TD Sensor Failure

F06: TE Sensor Failure

F07: TL Sensor Failure

F08: TO Sensor Failure

F10: TWI Sensor Failure

F11: TWO Sensor Failure

F14: TTW Sensor Failure

F17: TFI Sensor Failure

F18: THO Sensor Failure

F19: Detection of THO Disconnection Failure

F20: TFI Detach Failure

F23: Low Pressure Sensor Failure

Troubleshooting flow chart for low pressure sensor failures.

F30: Enhanced IC Failure

F32: Flow Sensor Failure

Troubleshooting flow chart for flow sensor failures.

F33: Flowing Quantity Failure

Troubleshooting flow chart for flowing quantity failures.

L07: Communication Failure

L09: Communication Failure

P03: Discharge Temperature Failure

P04: High Pressure Switch Failure

Troubleshooting for high pressure switch failure.

P05: Power Supply Voltage Failure

Diagnoses issues related to power supply voltage being too high or low.

P07: Heat Sink Overheating Trouble

P15: Gas Leak Detection

Steps to detect and diagnose refrigerant gas leaks.

P19: 4-Way Valve Reversal Trouble

P20: High Pressure Protection Operation

P22: Fan System Trouble

P26: Short-Circuit of Compressor Drive Element

Troubleshooting for abnormal short circuits of compressor drive elements.

P29: Compressor Motor Position Detection Circuit Trouble

Temperature Sensor, Temperature-Resistance Characteristic Table

Operation Check by PC Board Switch

Brief Method for Checking Key Components

PC Board Replacement Procedure Manual

P.C. Board (MCC-1768) Replacement Procedure Manual

P.C. Board (MCC-1675) Replacement Procedure Manual

P.C. Board (MCC-1781) Replacement Procedure Manual

How to exchange main parts

Periodic Inspection Items

Hydro Unit Inspection Items

Outdoor Unit Inspection Items

Hot Water Cylinder Inspection Items