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SERVICE MANUAL
Portable Dehumidifer Series
with R-410A:
BHD-301-G
BHD-501-G
BHD-651-G
Heat Controller, Inc. • 1900 Wellworth Ave. • Jackson, MI 49203 • (517)787-2100 • www.heatcontroller.com
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BHD-G Service Manual Portable Dehumidifier with R-410A Heat Controller, Inc. TABLE OF CONTENTS 1. PREFACE ............................................................................................ 2 1.1 SAFETY PRECAUTIONS ...................................................... 2 1.2 INSULATION RESISTANCE TEST ........................................ 2 1.3 UNIT FEATURES ................................................................... 2 1.4 CONTROL LOCATIONS ...................................
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Heat Controller, Inc. Portable Dehumidifier with R-410A BHD-G Service Manual 1. PREFACE This SERVICE MANUAL provides various servicing information for the unit, including the mechanical and electrical parts, etc. This dehumidifier was manufactured and assembled under a strict quality control system. The refrigerant is charged at the factory. Be sure to read the safety precautions prior to servicing the unit. 1.1 SAFETY PRECAUTIONS 1. When servicing the unit, set the POWER SWITCH to OFF and U
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BHD-G Service Manual Portable Dehumidifier with R-410A Heat Controller, Inc. 3. Humidity Set Control The humidity level can be set within a range of 35%RH (Relative Humidity) to 85%RH (Relative Humidity) in 5% increments. For drier air, press the button and set to a lower percent value(%). When the value displays 35%,press the button again will activate the continuous dehumidifying operation. For damper air, press the button and set a higher percent value(%). TIMER Set Control
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Heat Controller, Inc. Portable Dehumidifier with R-410A BHD-G Service Manual 2. Product Installation Instructions Install the portable dehumidifier in a flat and spacious location where the air outlets will not be obstructed. Do not install underneath desks or inside cupboards as this will restrict the air flow. 16in (40cm) or more Maintain a clearance of at least 8 inches (20cm) in the front and rear of the unit to maintain correct air-flow. 3. Product Operation 8in (20cm) or more 8in
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BHD-G Service Manual Portable Dehumidifier with R-410A Heat Controller, Inc. 3.4 OPERATION WITH CONTINUOUS DRAINAGE On the rear of the unit, remove the rubber plug carefully. Remove the water tank first, then push the hose onto the connector located inside of the hole. The hose should go down smoothly without bends or kinks. Place the end of the hose into a suitable drainage location for condensate removal. 3.5 MAINTENANCE 3.5.1 Precaution Be sure to unplug the unit before cleaning. Do not use
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Heat Controller, Inc. Portable Dehumidifier with R-410A BHD-G Service Manual 4.Electronic function 4.1 POWERING ON THE UNIT When the unit is just powered on or the dropped power is just restored, the unit will immediately perform the self- diagnosis. The check items include the water-full, temperature sensor and humidity sensor. If there is no defect, the power LED will flash at 0.5Hz while all other LEDs are off. All buttons are invalid except the ON/OFF button. 4.2 SETTING THE RELATIVE HUMID
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BHD-G Service Manual Portable Dehumidifier with R-410A Heat Controller, Inc. 5.Basic Test Procedures 5.1 DEFECTIVE COMPRESSOR Compressors are single phase, 115 volt. All compressor motors are permanent split capacitor type using only a running capacitor across the start and run terminal. All compressors are internally spring mounted and externally mounted on rubber isolators. COMPRESSOR WINDING TEST Remove compressor terminal box cover and disconnect wires from terminals. Using an ohmmeter, c
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Heat Controller, Inc. Portable Dehumidifier with R-410A BHD-G Service Manual TERMINAL OVERLOAD (Internal) Some model compressors are equipped with an internal overload. The overload is embedded in the motor windings to sense the winding temperature and/or current draw. The overload is connected in series with the common motor terminal. Should the internal temperature and/or current draw become excessive, the contacts in the overload will open, turning off the compressor. The overload will aut
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BHD-G Service Manual Portable Dehumidifier with R-410A Heat Controller, Inc. 11. Break vacuum by charging system from the high side with the correct amount of refrigerant specified. This will prevent boiling the oil out of the crankcase. NOTE: If the entire charge will not enter the high side, allow the remainder to enter the low side in small increments while operating the unit. 12. Restart unit several times after allowing pressures to stabilize. Pinch off lines, cut and solder the ends. Re
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Heat Controller, Inc. Portable Dehumidifier with R-410A BHD-G Service Manual CAPACITOR - TEST 1. Remove capacitor from unit. 2. Check for visual damage such as bulges, cracks, or leaks. 3. For dual rated, apply an ohmmeter lead to common (C) terminal and the other probe to the compressor (HERM) terminal. A satisfactory capacitor will cause a deflection on the pointer, then gradually move back to infinity. 4. Reverse the leads of the probe and momentarily touch the capacitor terminals. The defl
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BHD-G Service Manual Portable Dehumidifier with R-410A Heat Controller, Inc. 6. TROUBLESHOOTING GUIDE 6.1 TROUBLESHOOTING GUIDE In general, possible trouble is classified in three kinds. One is called Starting Failure which is caused from an electri- cal defect, another is ineffective Air Conditioning caused by a defect in the refrigeration circuit and improper applica- tion, and the other is called the Structure Damage. ROOM AIRCONDITIONER VOLTAGE LIMITS: NAMEPLATE RATING MINIMUM MAXIMUM 115V 1
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Heat Controller, Inc. Portable Dehumidifier with R-410A BHD-G Service Manual 6.3.3 Humidity sensor check 6.3.4 Fail to start or fail to start motor 12
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BHD-G Service Manual Portable Dehumidifier with R-410A Heat Controller, Inc. 6.3.5 Abnormal noise Check whether the lines are vibrating or coming into contact with other lines or compressor Check whether the noise is from inside the line. 6.3.6 Complaint and remedy Complaint Cause Remedy Transformer (Discharge Check resistance between the two input/output lines on transformer before transformer. Replace the transformer if either of the input/ No display or any button testing) output is op
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Heat Controller, Inc. Portable Dehumidifier with R-410A BHD-G Service Manual Complaint Cause Remedy Replace the fan if cracked, out of balance, or partially Fan missing. Replace the blower if cracked, out of balance, or partially Blower missing. Fan motor noise Loose screws Tighten them. Replace the motor if knocking sounds continues when Worn bearings running, or if the motor hums or noise appears to be internal while running. Voltage Check voltage. Call an electrician if not within limits.
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BHD-G Service Manual Portable Dehumidifier with R-410A Heat Controller, Inc. 7. Wiring Diagram 15
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