To Next PageTo Next PageWhat to do if temporary installation and removal of the Toshiba Air to Water Heat Pump are repeated?
If you repeatedly install and remove your Toshiba Air to Water Heat Pump, such as when leased, always use new pipes for the refrigerant piping work.
What to do if the Toshiba Air to Water Heat Pump uses a different type of refrigerator oil?
If the existing Toshiba Air to Water Heat Pump uses refrigerator oil other than Mineral oil, Suniso, Freol-S, MS (Synthetic oil), alkyl benzene (HAB, Barrel-freeze), ester series, or PVE only of ether series, make sure to use new pipes for the refrigerant piping works.
Why refrigerant cannot be recovered from Toshiba HWT-1101HW-E Heat Pump?
If refrigerant cannot be recovered using a commercially available dryer attached to the existing pipes, it is possible that a large quantity of dirty oil or moisture remains inside the pipes.
What to do if I see residue or metal dust in my Toshiba Heat Pump?
If you observe discolored oil, a large quantity of residue, shiny metal dust, or other wear residue or mixture of foreign matter, the existing pipes should not be reused as they are.
What to do if there is a heavy scratch or dent on my Toshiba HWT-1101HW-E pipe?
If there is a heavy scratch or dent on the pipe, be sure to use new pipes for the refrigerant piping works.
What to do if existing pipe thickness is thinner than specified for my Toshiba HWT-1101HW-E Heat Pump?
If the existing pipe thickness is thinner than the specified 'Pipe diameter and thickness,' be sure to use new pipes for the refrigerant piping works.
Details qualifications and knowledge for installers and service persons.
Lists specific work and corresponding protective gear required.
Explains indications for DANGER, WARNING, and CAUTION.
Explains illustrated marks for prohibited, mandatory, and cautious items.
Lists warning indications and their descriptions for safety.
Safety precautions related to electrical shock and fire.
Procedures for turning off the breaker before work.
Prohibits specific actions to prevent electrocution.
General safety precautions for installation, servicing, and removal.
Specific precautions for electrical shock hazards.
Prohibits actions that could lead to electric shock.
Precautions for working with electrical parts and site safety.
Importance of earth wires and prohibition of modifications.
Using specified parts and keeping children away from equipment.
Insulating measures and fire prevention during brazing.
Safety cautions regarding R32 refrigerant and contamination.
Proper assembly, cabling, and ventilation for safety.
Importance of checking insulation resistance.
Mandatory actions for refrigerant leaks, post-repair checks.
Warnings for operating with closed valves and checks after reinstallation.
Precautions for cooling checks after shutdown due to heat.
Safety precautions for installation and location selection.
Mandatory procedures for pump-down and pipe handling.
Prohibits venting gases to the atmosphere by law.
Importance of wearing gloves and confirming leaks during brazing.
Safety advice for users regarding damaged parts.
Safety precautions for relocating the unit by qualified personnel.
Cautions regarding R32 refrigerant and preventing contamination.
General safety rules for R32 installation and service.
Cautions on similar dimensions and not mixing refrigerants or oils.
Use of high-pressure tools and clean pipes with nitrogen gas.
Use of vacuum pump for earth protection and R32 charging method.
Specifications for copper pipes used with R32.
Types of joints (flare, socket) for copper pipes.
Piping specifications including thickness and flare nuts.
Table of tools and their applicability for R32 and R22.
List of general tools required for installation and service.
Technical specifications for the Hydro unit models.
Technical specifications for the Outdoor unit models.
Technical specifications for larger Hydro unit models.
Technical specifications for larger Outdoor unit models.
External dimensions and connection ports of the Hydro unit.
External dimensions and mounting details of the Outdoor unit.
External dimensions and mounting details for larger Outdoor units.
External dimensions of Hot water cylinder models.
Diagram showing the water flow and components in the system.
Various examples of water circuit installations with buffer tanks.
Diagrams illustrating the refrigeration cycle for different models.
Wiring diagram for the Hydro unit, including control boards.
Wiring diagram for the Outdoor unit (HWT-401/601HW-E).
Wiring diagrams for larger Outdoor units.
Wiring diagram for the Hot water cylinder unit.
Electric component ratings for Hydro unit models.
Electric component ratings for larger Hydro unit models.
Electric component ratings for Outdoor unit models.
Electric component ratings for Hot water cylinder unit models.
Details of the water heat exchange control board (MCC-1753).
Details of the Hydro unit sub control board (MCC-1755).
Details of the Outdoor control board (MCC-1768).
Details of Outdoor control boards for larger models.
Details of the MCC-1705 board (Compressor, Fan IPDU).
Cautions regarding R32 refrigerant and preventing contamination.
General safety rules for R32 installation and service.
Copper pipes and joints specifications for R32 installations.
Procedures and precautions for processing refrigerant piping materials.
Lists required tools for refrigerant handling.
Steps for charging the specified amount of new refrigerant.
Materials used for brazing pipes, including filler metals.
Explanation of flux necessity, characteristics, and types.
Brazing methods, including oxidation prevention.
Essential conditions for reusing existing refrigerant pipes.
Cases where existing pipes cannot be reused.
Specifics for branching pipes in twin systems.
Methods for curing pipes when units are left open.
Flowchart for final checks after installation.
Checks and cautions for handling existing pipes.
Procedure for recovering refrigerant.
Guidelines and cautions for charging additional refrigerant.
Safe practices for recovering refrigerant.
Procedures for safely decommissioning the unit.
Requirements for labelling decommissioned equipment.
Overview of basic operation modes.
Detailed description of operation modes and control methods.
Control functions specific to the Hydro unit.
Control functions specific to the Outdoor unit.
Purpose and details of operation control via remote controller.
Operation flow and description for hot water supply.
Operation flow and description for heating.
Operation flow and description for cooling.
Graphs showing heat pump operation ranges based on temperatures.
Heat pump operation ranges for specific models.
Details on hot water supply operation start conditions and modes.
Details on heating operation start conditions and modes.
Details on cooling operation start conditions and modes.
Modes for simultaneous hot water supply and heating.
Modes for simultaneous hot water supply and cooling.
Control methods for boiler integration with heat pump.
Boiler output control, limits, and A02 error detection.
2-zone temperature control with boiler integration.
How to operate the hot water boost function.
Function to prevent bacteria by raising hot water temperature.
Operation for energy saving during sleeping hours.
Operation to prevent pipe freezing when unit is unused.
Automatic adjustment of water temp based on outside air temp.
Control of compressor and heater output for water temperature.
Control actions based on TC sensor temperature.
Freeze prevention control based on TC and TWO sensors.
Heater control for hot water supply operations.
Backup and booster heater control during heating.
Backup heater control during defrosting.
Forcible energization of backup heater to prevent freeze.
Control of built-in and external circulation pumps.
P1 pump control for hot water supply.
P1 pump control for heating operation.
Synchronization of external pump P2.
Control of external circulation pump P2 during cooling.
Control based on water flow sensor readings.
Mixing valve control for different zone temperatures.
Installing and setting up room temperature control.
Control method for room temperature.
Cooling thermostat operation and temperature settings.
Cooling thermostat operation and temperature settings.
Control of hot water supply using a cylinder thermostat.
Changing operation modes and forced stop/restart.
Limiting heat pump operation for peak periods.
Connecting the unit to a Smart Grid network for control.
Managing output signals for various functions.
Performance curves (Q-H characteristics) for hydro units.
Automatic restart after power outage.
Controls to prevent freezing of water piping.
Further piping freeze prevention controls.
Protection against high return water from boiler systems.
Control of the Pulse Motor Valve for operation status.
Control to detect refrigerant cycle abnormalities.
Control of compressor rotation to manage current values.
Control of outdoor fan motor rotations.
Fan control logic for cooling operation.
Fan control for hot water supply and heating.
Control logic for defrosting the outdoor heat exchanger.
Procedures for defrost operation.
Preliminary defrost operation when compressor temperature is low.
Energizing inactive compressor to warm it.
Prevention of compressor stoppage due to short circuits.
Compressor protection against over current.
Control to release high pressure using PD sensor.
High pressure switch function for compressor protection.
Compressor case thermostat for protection against high temperatures.
Control of bottom plate heater based on outdoor temperature.
Procedure for starting up the compressor from hibernation.
Control for liquid injection based on conditions.
Initial checks for diagnosing system defects.
Operations that do not indicate defects.
Overview of defect diagnosis procedures and check codes.
Flow charts for diagnosing specific error codes.
Checking operations via PC board switches.
Quick checks for key components.
Verifying power supply voltage for normal operation.
Checking cable connections for proper wiring.
Correct installation of temperature sensors.
Normal operations that may appear as defects.
Steps for diagnosing defects.
Using check codes from the remote controller for diagnosis.
Procedure to cancel check codes.
Flowchart for diagnosing Hydro unit errors (A01-A08).
Details on diagnostic operations and error codes.
Diagnostic functional operations for communication and sensor errors.
Table of outdoor unit defect modes and troubleshooting.
Troubleshooting based on outdoor unit LED indications.
Troubleshooting for high pressure SW operation.
Troubleshooting for high pressure SW, power source, heat sink.
Troubleshooting for gas leak detection.
Troubleshooting for 4-way valve reversal.
Troubleshooting for high pressure protection operation.
Troubleshooting for fan system issues.
Troubleshooting for compressor drive element short circuits.
Troubleshooting for compressor motor position detection.
Troubleshooting for TD sensor failures.
Troubleshooting for TE sensor failures.
Troubleshooting for TL sensor failures.
Troubleshooting for TO sensor failures.
Troubleshooting for TS sensor failures.
Troubleshooting for TH sensor failures.
Troubleshooting for incorrect wiring of TE/TS sensors.
Troubleshooting for PD sensor failures.
Troubleshooting for EEPROM failures.
Diagnosis for flow sensor errors.
Diagnosis for flowing quantity errors.
Diagnosis for overheat protection errors.
Diagnosis for antifreeze operation (2).
Diagnosis for release protection operation.
Diagnosis for heating/hot water heater errors.
Diagnosis flowcharts for pump errors.
Diagnosis for communication errors between units.
Diagnosis for TC sensor errors.
Diagnosis for TD sensor errors.
Diagnosis for TE sensor errors.
Diagnosis for TL sensor errors.
Diagnosis for TO sensor errors.
Diagnosis for TWI sensor errors.
Diagnosis for TWO sensor errors.
Diagnosis for TTW sensor errors.
Diagnosis for TFI sensor errors.
Diagnosis for THO sensor errors.
Diagnosis for THO disconnection errors.
Diagnosis for TFI sensor detachment errors.
Diagnosis for low pressure sensor errors.
Diagnosis for enhanced IC errors on control board.
Diagnosis for flow sensor errors.
Diagnosis for flowing quantity errors.
Error related to mismatched outdoor and hydro unit models.
Communication errors in group control.
Communication errors related to hydro unit capability code.
Error related to ZONE settings.
Error related to 0-10V setting in group control.
Troubleshooting for compressor breakdown.
Troubleshooting for compressor lock issues.
Troubleshooting for case thermostat operation errors.
Error for unset model type.
Failure due to combination mismatch.
Communication issues between MCUs.
Troubleshooting for high pressure SW operation.
Troubleshooting for high pressure SW, power source, and case thermostat.
Troubleshooting for high pressure SW, fan, and heat exchanger issues.
Troubleshooting for power source issues.
Troubleshooting for heat sink overheat.
Troubleshooting for gas leak detection.
Troubleshooting for high pressure SW operation, hydro heat exchanger issues.
Troubleshooting for high pressure SW operation, refrigerant issues.
Troubleshooting for 4-way valve reversal.
Troubleshooting for high pressure protection operation.
Troubleshooting for fan system issues.
Troubleshooting for compressor drive element short circuits.
Troubleshooting for compressor motor position detection.
Troubleshooting for TD sensor failures.
Troubleshooting for TE sensor failures.
Troubleshooting for TL sensor failures.
Troubleshooting for TO sensor failures.
Troubleshooting for TS sensor failures.
Troubleshooting for TH sensor failures.
Troubleshooting for incorrect wiring of TE/TS sensors.
Troubleshooting for PD sensor failures.
Troubleshooting for EEPROM failures.
Resistance characteristics of various temperature sensors.
Mode to check operation of valves and pumps via PC board switches.
List of components and their check procedures.
Quick checks for key Hydro unit components like sensors.
Quick checks for key Outdoor unit components like compressor, fan motor.
DN code settings for Hydro unit functions.
Procedures for setting Hydro unit DN codes via remote controller.
Step-by-step guide to set Hydro unit DN codes.
Step-by-step guide to set Remote Controller DN codes.
Table of DN codes, items, details, and factory defaults.
Continuation of the DN code table with more settings.
Further continuation of the DN code table.
Final part of the DN code table.
Table of remote controller DN settings.
Procedure to reset Hydro unit DN codes.
Procedure to reset Remote Controller DN codes.
Procedure for performing test runs of heating, cooling, and hot water operations.
Setting up auto curves for temperature control.
Auto-curve settings for ZONE1 based on outside temperature.
Auto-curve settings for ZONE2 using percentage or fixed values.
Shifting auto-curve temperatures using remote controller.
Setting the date, month, year, and time.
Setting up scheduled operations for various modes and temperatures.
Methods for setting daily operational ranges.
Copying daily settings from the previous day.
Resetting daily scheduled settings.
Setting days when the schedule timer is not used.
Locking/unlocking specific remote controller functions.
Enabling the schedule timer function.
Setting frost protection to prevent freezing during absence.
Setting the end time for frost protection operation.
Setting for energy saving during specified hours.
Setting to prevent bacteria by raising hot water temperature.
Changing anti-bacteria temperature and holding time.
Changing anti-bacteria start time and cycle.
Temporarily prioritizing hot water supply operation.
Reducing noise output during night time.
Activating forced defrosting mode for the outdoor unit.
Calling sensor temperature display for installation verification.
Data for Hydro unit sensors.
Data for Outdoor unit sensors.
Service data for operational history.
Function to list and reset alarm data.
Function for drying concrete, used for specific installation needs.
Procedure to start the floor drying operation.
Displays latest power consumption data.
Resets power consumption data.
Displays sensor values for verification.
Control for refrigerant recovery operation (pump down).
Overview of service support functions using switches and LEDs.
LED indications for abnormalities.
Current trouble indications via LED display.
Display of sensor values, current, compressor frequency, and PMV position.
LED display mapping to control content.
Special operations for maintenance and inspection.
Setting the DN code after replacing the Hydro unit PC board.
Setting jumper wires after replacing the Outdoor unit PC board.
Procedures for removing and attaching Hydro unit parts.
Procedure for removing and attaching the remote controller.
Procedures for detaching and attaching control boards.
Procedures for exchanging electric parts assembly.
Procedure for removing and attaching the right side board.
Procedure for removing and attaching the upper board.
Procedure for removing and attaching the bottom board.
Procedure for replacing the expansion vessel.
Procedure for replacing the overpressure preventive valve.
Procedure for replacing the air vent valve.
Procedure for removing and attaching the pump.
Procedure for removing and attaching the flow sensor.
Procedure for removing and attaching the manometer.
Procedure for removing and attaching the heater assembly.
Procedure for removing and checking TC, TWI, TWO, THO sensors.
Details on removing and checking sensors.
Procedure for replacing the water heat exchanger assembly.
Detachment and attachment of front panel and top cover.
Procedure for removing and attaching the front cabinet.
Steps for detaching the inverter.
Steps for attaching the inverter.
Checking the outdoor control board.
Steps for detaching the outdoor control board.
Steps for attaching the outdoor control board.
Procedure for detaching and attaching the right side cabinet.
Procedure for detaching and attaching the left side cabinet.
Procedure for removing the fan motor.
Procedure for attaching the fan motor.
Procedure for detaching the compressor.
Procedure for detaching the reactor.
Procedure for detaching and attaching the electronic expansion valve coil.
Procedure for removing and attaching the fan guard.
Location for TD sensor installation.
Location for TL sensor installation.
Location for TS sensor installation.
Location for TE sensor installation.
Location for TO sensor installation.
Installation of TL sensor on the condenser outlet pipe.
Detachment and attachment of front panel and top cover.
Procedure for removing and attaching the plate stay.
Procedure for removing and attaching the air-outlet cabinet.
Procedure for removing and attaching the right side cabinet.
Procedure for detaching and attaching the IPDU board.
More steps for IPDU board attachment, including heat sink preparation.
Cable management using binding bands for IPDU.
Procedure for detaching and attaching the Interface CDB and Reactor.
Procedure for removing the fan motor.
Precautions and final steps for fan motor assembly.
Procedure for detaching the compressor and its lead.
Compressor attachment, vacuum process, and refrigerant encapsulation.
Procedure for detaching and attaching the PMV coil.
Procedure for detaching and attaching the 4-way valve coil.
Procedure for detaching and attaching the liquid injection PMV coil.
Procedure for detaching and attaching the 2-way valve coil.
Procedure for detaching and attaching the fan guard.
Instructions for installing the Hydro unit in humid locations for cooling.
List of inspection items for Hydro unit, Outdoor unit, and Hot water cylinder.
Exploded view and part list for the Hydro Unit.
Exploded view of Hydro Unit parts.
Part numbers and descriptions for Hydro unit components.
Exploded view of Outdoor Unit parts.
Exploded view of Inverter Assembly parts.
Part numbers and descriptions for Outdoor Unit components.
Exploded view of Inverter Assembly parts for larger models.
Part numbers and descriptions for larger Outdoor Unit components.
General