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Heat Controller BHD-301-G User Manual

Heat Controller BHD-301-G
17 pages
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Heat Controller, Inc. 1900 Wellworth Ave. Jackson, MI 49203 (517)787-2100 www.heatcontroller.com
SERVICE MANUAL
Portable Dehumidifer Series
with R-410A:
BHD-301-G
BHD-501-G
BHD-651-G
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Heat Controller BHD-301-G Specifications

General IconGeneral
Product colorWhite
Water tank capacity5 L
Water level indicatorYes
Suitable for room area up to139 m²
Suitable for room volume up to- m³
Weight and Dimensions IconWeight and Dimensions
Depth236 mm
Width340 mm
Height505 mm
Weight13608 g

Summary

Preface and Unit Features

Safety Precautions

Essential safety guidelines for servicing the unit, including power disconnection and testing.

Insulation Resistance Test

Procedure for conducting an insulation resistance test to ensure user safety after servicing.

Unit Features

Highlights key functionalities such as auto-defrosting, wide temperature range operation, and display.

Control Locations

Identifies the location and function of all control buttons and indicator lights on the unit.

Outside Dimensions

Provides the physical dimensions (width, height, depth) for different dehumidifier models.

Humidity Set Control

Explains how to set the desired humidity level and the continuous dehumidification mode.

Fan Speed Control

Details how to adjust fan speed for optimal moisture removal or quieter operation.

Timer Settings

Describes the auto start and auto stop timer functions.

Display Information

Explains the information shown on the unit's display regarding humidity and timer settings.

Error Codes

Lists and explains common error codes displayed by the unit.

Product Installation Instructions

Operating Conditions

Specifies the recommended environmental conditions for optimal dehumidifier performance.

Turning the Unit On or Off

Step-by-step guide for powering the unit on, off, and initial self-check procedures.

Operation with Water Tank

Details how the unit operates with its internal water tank and the full tank indicator.

Product Operation and Maintenance

Operation with Continuous Drainage

Instructions for connecting and using the continuous drainage hose.

Maintenance Precautions

Important safety advice before cleaning or performing maintenance on the unit.

Air Filter Maintenance

Steps for removing, cleaning, and drying the air filter for efficient operation.

Unit Enclosure Cleaning

Guidance on cleaning the exterior cabinet of the dehumidifier.

Water Tank Cleaning

Instructions for washing and drying the water collection tank.

Electronic Functions and Controls

Powering On the Unit

Describes the unit's self-diagnosis process upon initial power-up.

Setting Relative Humidity

How to adjust humidity settings and the compressor/fan cycling behavior.

Continuous Dehumidification Mode

Details on operating the unit in continuous mode and its fan operation.

Powering Off the Unit

Procedure for turning the unit off and its subsequent actions.

Compressor Protection

Information regarding the 3-minute time delay for compressor restarts.

Protection and Failure Modes

Explanation of unit protections like water-full, anti-icing, and sensor failures.

Basic Test Procedures for Components

Defective Compressor Testing

Methods for testing compressor windings, ground faults, and efficiency.

External Thermal Overload Test

Procedure to test the external thermal overload protector on the compressor.

Internal Overload Checking

How to check the internal overload protector embedded in compressor windings.

Sealed Refrigeration System Repairs

Required Equipment

List of essential tools and equipment for refrigeration system servicing.

Equipment Capabilities

Specifications for equipment capabilities required for refrigerant handling.

Hermetic Component Replacement

Step-by-step guide for replacing sealed refrigeration circuit components.

Compressor Motor Burnout

Procedures for addressing compressor motor burnout, including flushing and reassembly.

Rotary Compressor Troubleshooting

Specific service notes and troubleshooting tips for rotary compressors.

Refrigerant Charge Procedure

Critical steps for accurately charging the system with the correct refrigerant amount.

Fan Motor and Capacitor Tests

Fan Motor Testing

Methods for testing the fan motor's operation at different speed settings.

Capacitor Testing

Procedures for testing capacitors for functionality using an ohmmeter.

Troubleshooting Guide

General Troubleshooting Categories

Classifies troubles into starting failure, ineffective AC, and structure damage.

Room Airconditioner Voltage Limits

Specifies the acceptable operating voltage range for the unit.

PCB Fault Codes Identification

Lists and explains specific fault codes displayed on the Printed Circuit Board.

Water Level Protection Abnormal

Troubleshooting steps for issues with water level sensing or alarms.

Automatic Trouble Alarm

Diagnosing alarms related to temperature sensors or loose connections.

Humidity Sensor Check

Procedure to diagnose humidity sensor failures, including moisture and connectivity checks.

Fail to Start or Motor Failure

Flowchart for troubleshooting unit or motor startup issues.

Abnormal Noise Diagnosis

Guide to identify the source and resolve abnormal noises from the unit.

Complaint and Remedy Table

A comprehensive list of common complaints, their causes, and suggested remedies.

Fan Motor Noise Issues

Specific causes and remedies for abnormal fan motor noise.

Compressor Fan Motor Runs Only

Troubleshooting steps when only the compressor fan motor is operating.

Insufficient Capacity Troubleshooting

Diagnosing and resolving issues causing reduced dehumidification capacity.

Compressor Not Stopping

Troubleshooting when the compressor fails to turn off at the set humidity level.

Frequent Unit Starts and Stops

Identifying causes for the unit cycling on and off too frequently.

Wiring Diagram

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