Midea RSJ-800/SZN1-H User Manual

Midea R410A Direct Heating Type HPWH 50Hz Technical Manual MCAC-HTSM-201906
1
Midea R410A
Direct Heating Commercial Heat Pump
50Hz
Technical Manual
Applicable Model:
RSJ-120/ZN1-540V1
RSJ-200/SZN1-540V1
RSJ-420/SZN1-H
RSJ-800/SZN1-H
Midea reserves the right to discontinue, or change specification or designs at any time without notices and
without incurring obligations.
Midea CAC Confidential

Midea RSJ-800/SZN1-H Specifications

General

Brand	Midea
Model	RSJ-800/SZN1-H
Category	Heat Pump
Language	English

Summary

Part 1 General Information

1 Product lineup

Describes the product range and models available for the heat pump water heater.

Part 2 Performance

1 Features

Highlights the key characteristics and benefits of the heat pump water heater.

2 Specifications

Details the technical specifications for each model of the heat pump water heater.

6 Wiring diagrams

Shows the electrical connection schematics for the unit's components.

8 Electrical characteristics

Lists the key electrical parameters and ratings for each model.

9 Capacity table

Presents performance data (capacity and COP) under various operating conditions.

Part 3 Installation

1. Safety information

Crucial safety guidelines for installation, operation, and maintenance of the unit.

2. Unit installation

General instructions and procedures for installing the heat pump unit.

2.3 Unit installation caution

Specific precautions and considerations for unit placement and foundation.

2.6 Water pipeline system

2.9 Electric connection of the unit

3 Trial run

3.1 Check list

4 Fault analysis and solutions

4.1 Abnormal phenomena

Phenomena need to contact Midea service agency

4.2 Error code list

Provides a comprehensive list of error codes and their corresponding reasons.

E1: Power phase sequence error

E2: Communication error of host unit and wired controller, main unit and slave unit.

E3, E4, E5, E6, E7, E9, Ed, EA

P0: System low pressure protection.

Troubleshooting steps for system low pressure protection faults.

P1: System high pressure protection.

Troubleshooting steps for system high pressure protection faults.

P2: Compressor current of system is overload.

Troubleshooting steps for compressor overload protection.

P4: Protection for discharge high temperature.

Troubleshooting steps for protection due to high discharge temperature.

P7: Host unit is not matched with wired controller...

P8: Water outlet high temperature protection.

Troubleshooting steps for water outlet high temperature protection.

C1: Compressor low current protection.

Troubleshooting steps for compressor low current protection.

5 Maintenance

General maintenance guidelines

Part 4 Wired Controller

2 Introduction of function buttons

3 Operation instruction

Guides users on how to operate the wired controller for various functions.

3.1 Turn on and turn off the main unit

3.2 Setting operating modes and parameters

Instructions for setting operating modes, temperature, and other parameters.

Setting water temperature

Timing setting

3.4 Check

3.5 Error handling

Instructions on how to interpret and handle unit errors displayed on the controller.

4 Installation

4.1 Caution

General safety precautions and important considerations for controller installation.

4.2 Preparation before installation

4.4 Wire connection