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Hitachi YUTAMPO Series User Manual

Hitachi YUTAMPO Series
94 pages
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YUTAMPO SERIES
Indoor unit
YUTAMPO
TAW-(190/270)RHC
Outdoor unit
RAW-35RHC
Service Manual

Table of Contents

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Hitachi YUTAMPO Series Specifications

General IconGeneral
ModelYUTAMPO Series
Power ConsumptionVaries by model
Frequency50Hz
Safety FeaturesOverheat protection
DimensionsVaries by model
WeightVaries by model
ApplicationSpace heating

Summary

Preparation

Control Panel Functionality

Explanation of buttons and indicators on the controller's interface.

Preparing for Operation

Steps for initial setup, including filling the tank and powering on.

Setting Hot Water Temperature

Instructions for adjusting the desired hot water temperature and related settings.

Control Functions

System Diagram

Schematic overview of the system's electrical and functional connections.

Basic Operation

How to start/stop heating and understand status indicators.

Standard Operation without Electrical Heater

Description of normal operation using only the heat pump.

DHW Heater Function

Details on the operation and settings of the backup electrical heater.

Anti Legionella Function

Setup and operation of the weekly sterilization cycle for legionella prevention.

Boost Function

Manually forcing a one-time heating cycle for exceptional DHW demand.

Emergency Function

Using the electrical heater for operation in case of outdoor unit malfunction.

Night Shift Function

Reducing compressor load to lower noise levels during night hours.

Timers Function

Setting up simple and schedule timers for automated heating operations.

Smart Function

Managing heat pump operation based on electricity availability.

Pump Down Procedure Function

Procedure for collecting refrigerant for part replacement.

Electrical Checks of Main Parts

Outdoor Unit Electrical Checks

Detailed electrical checks for various components of the outdoor unit.

Outdoor Unit Power Circuit

Schematic and explanation of the outdoor unit's main power circuit.

Servicing

Troubleshooting

Discharge Procedure and Power Shut Off

Safe procedure to discharge capacitors and shut off power before checks.

Self-Diagnosis Lighting Mode

Interpreting the LED indicators (LD301) for self-diagnosis.

Checking Electrical Parts of Outdoor Unit

Flowchart for diagnosing electrical faults in the outdoor unit.

Checking the Refrigerant Cycle

Procedure for diagnosing issues related to the refrigerant cycle.

Troubleshooting by Alarm Code (Tank)

Diagnosing issues based on alarm codes reported by the tank unit.

Troubleshooting by Protection Code (Outdoor Unit)

Interpreting protection codes and diagnosing faults in the outdoor unit.

Maintenance Notes

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