Bosch HP270-2 User Manual

DOMESTIC HOT WATER
HEAT PUMP 200 / 250 / 270 L
This document is confidential and restricted to exclusive use by the official technical
assistance of Bosch in the countries of destination of this product.
TECHNICAL MANUAL FOR AFTER SALES AND
SERVICE TECHNICIANS

Bosch HP270-2 Specifications

General

Brand	Bosch
Model	HP270-2
Category	Heat Pump
Language	English

Summary

Operation Modes

HP 270-2 Operation Modes

Lists Combi, Heat Pump, and Electric Heater modes with their respective temperature settings and adjustments.

New Platform Operation Modes

Covers Combi, Economic, and Electric Heater modes for HP270-3 and HP200/250-1.

Conditions for Operation Sequence

Outlines the step-by-step activation sequence of the heat pump components upon startup.

Comfort Improvement and Air Defrost

Changes in Air Defrost Sequence

Describes current and new air defrost sequences, including conditions and activation for different models.

Heat Pump Diagram and Operation Modes

Operation Modes Conditions Table

Details operating conditions for Combi, Heat Pump, Electric Heater, and Full modes.

Model Updates and Changes

Introduction of HP 270-3 Model

Highlights product changes for HP 270-3, including new HMI, pump, and fan control.

Introduction of HP 200/250-1 Platform

Details product changes for HP 200/250-1, such as new tank platform and module design.

Protection Modes

Anti-Freeze Protection

Details the anti-freeze protection mechanism for the module and tank, active in various modes.

Legionella Disinfection and Air Defrost

Legionella Disinfection

Explains the legionella function to assure hot water temperature, with stop conditions.

Air Defrost Sequence Conditions

Service Mode Parameters (HP270-2/HP200-250-1)

Failure and Test Display Codes

Service Mode Parameters (HP270-3)

Parameter Descriptions and Symbols

Details service mode parameters (0d-13d) and their corresponding display symbols for HP270-3.

Troubleshooting - Code E01

E01 - Lock Out Error (Top NTC Sensor)

Troubleshooting flowchart for Code E01 related to the hot water NTC temperature sensor.

Troubleshooting - Code E02

E02 - Lock Out Error (Bottom NTC Sensor)

Troubleshooting flowchart for Code E02 related to the cold/bottom water NTC sensor.

Troubleshooting - Code E03

E03 - Lock Out Error (Air NTC Sensor)

Troubleshooting flowchart for Code E03 related to the air NTC temperature sensor.

Troubleshooting - Code E04

E04 - Warning Code (High Tank Temperature)

Troubleshooting for Code E04, a warning for high storage tank temperature detected by the NTC.

Troubleshooting - Code E05

E05 - Lock Out Error (Fins NTC Sensor)

Troubleshooting flowchart for Code E05 related to the evaporator fins NTC temperature sensor.

Troubleshooting - Codes E06 & E07

E06 - Warning Code (Button Press)

E07 - Lock Out Error (Coil NTC Sensor)

Troubleshooting flowchart for Code E07 related to the coil NTC temperature sensor.

Troubleshooting - Code E08

E08 - Lock Out Error (Pocket NTC Sensor)

Troubleshooting flowchart for Code E08 related to the pocket (middle of tank) NTC sensor.

Troubleshooting - Code E09

E09 - Lock Out Error (High Pressure Circuit)

Troubleshooting for Code E09 fault in the high pressure circuit side.

Troubleshooting - Code E09 Continuation

E09 - Compressor and Refrigerant Issues

Continues E09 troubleshooting focusing on compressor, refrigerant, and water flow issues.

Troubleshooting - Code E10

Troubleshooting - Code E11

E11 - Lock Out Error (Low Pressure Circuit)

Troubleshooting for Code E11 fault in the low pressure circuit side, air flow issues.

Troubleshooting - Specific Model Errors (HP 200_250-1/270-3)

EF6 - Lock Out Error (Incorrect Purge)

Troubleshooting for EF6 Lock Out Error regarding incorrect purge of hydraulic circuit.

E10 - Lock Out Error (E-Heater)

Troubleshooting for E10 Lock Out Error related to the E-heater.

Troubleshooting - Codes E13 & E15

E13 - Lock Out Error (Top NTC Position)

Troubleshooting for E13 Lock Out Error due to incorrect position of Top NTC sensor.

E15 - Lock Out Error (Circulation Pump)

Troubleshooting for E15 Lock Out Error related to circulation pump insufficient rotation.

Troubleshooting - Codes E16, E17 & E18

E16 - Lock Out Error (Hydraulic Circuit Purge)

Troubleshooting for E16 Lock Out Error regarding incorrect purge of hydraulic circuit.

E17 - Lock Out Error (Fan Rotation)

Troubleshooting for E17 Lock Out Error related to fan with insufficient rotation.

E18 - Lock Out Error (Discharge NTC Position)

Troubleshooting for E18 Lock Out Error due to incorrect position of discharge NTC sensor.