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Bosch TA071 - User Manual

Bosch TA071
28 pages
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Installation and Maintenance Manual
TA Series
6 720 220 046
Revised 03-11

Table of Contents

Questions and Answers

  • P
    Paul SilvaAug 4, 2025
    What to do if my Bosch TA071 has no flow or low flow?
    • D
      douglasbradAug 4, 2025
      If your Bosch Heat Pump experiences no flow or low flow, several factors could be the cause. Here's what you can check: * Ensure the power supply is working. * Verify the on/off switch is in the 'ON' position. * Engage the heat pump contactor. * Inspect for and repair any broken or loose wires. * Purge any air from the piping system. * Remove the pump cartridge and clean it if the pump shaft/impeller is stuck. * Consider replacing the pump if it's defective. * Repair any kinks in the water piping and check for proper line size.

Summary

INITIAL INSPECTION AND PREPARATION

SAFETY AND LOCATION GUIDELINES

INSTALLATION PROCEDURES

DUCT SYSTEM INSTALLATION

ELECTRICAL WIRING GUIDELINES

Discusses field wiring compliance, voltage requirements, and phase balance for unit operation.

ECM INTERFACE BOARD FUNCTIONALITY

THERMOSTAT CONNECTION DETAILS

Details thermostat wiring to the ECM Interface Board and the function of each terminal.

UNIT STATUS AND CONFIGURATION

UPM CONTROLLER SAFETY FEATURES

SAFETY SENSORS AND CONTROLS

Lists high pressure, low pressure, freeze protection, and condensate overflow sensors.

UPM OPERATIONAL PROTECTIONS

Describes anti-short cycle, random start, low pressure bypass, and power interruption protection.

UPM CONTROLLER FAULT INDICATION AND RESET

ELECTRIC HEATER PACKAGE CONSIDERATIONS

ELECTRIC HEATER PACKAGE OPTION

Details factory-installed electric heater packages, power supply requirements, and compatibility.

SEQUENCE OF OPERATION

SYSTEM CHECKOUT AND START-UP

TROUBLESHOOTING COMMON ISSUES

UNIT OPERATION PROBLEMS

Addresses issues with flow, temperature, heat output, and lockouts.

PRESSURE CONTROL AND PERFORMANCE ISSUES

COOLING AND HEATING PERFORMANCE DIAGNOSIS

MAINTENANCE PROCEDURES

WIRING DIAGRAMS

SINGLE PHASE ECM BLOWER MOTOR WIRING

Provides the wiring diagram for a single-phase ECM blower motor system.

SINGLE PHASE ECM WITH ELECTRIC HEAT

Shows the wiring diagram for units with electric heat and a single-phase ECM blower motor.

OPERATING DATA TABLES

COOLING AND HEATING SPECIFICATIONS

Presents operating pressure and temperature data for cooling and heating modes across different models.

UNIT CHECK-OUT SHEET

Bosch TA071 Specifications

General IconGeneral
BrandBosch
ModelTA071
CategoryHeat Pump
LanguageEnglish

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