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
BHD-G Service Manual |
Portable Dehumidifier with R-410A |
Heat Controller, Inc. |
TABLE OF CONTENTS |
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1. PREFACE............................................................................................ |
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1.1 SAFETY PRECAUTIONS....................................................... |
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1.2 INSULATION RESISTANCE TEST........................................ |
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1.3 UNIT FEATURES................................................................... |
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1.4 CONTROL LOCATIONS......................................................... |
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1.5 OUTSIDE DIMENSIONS........................................................ |
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2. Product Installation Instructions ..................................................... |
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3. Product Operation.............................................................................. |
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3.1 Operating Conditions:............................................................ |
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3.2 Turning the unit “ON” or “OFF”............................................... |
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3.3 Operation with Water Tank..................................................... |
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3.4 Operation with Continuous drainage...................................... |
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3.5 MAINTENANCE..................................................................... |
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4. Electronic function............................................................................. |
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4.1 |
Powering on the unit.............................................................. |
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4.2 |
Setting the relative humidity................................................... |
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4.3 |
Continuous Dehumidification mode....................................... |
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4.4 |
Powering off the unit.............................................................. |
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4.5 |
Compressor protection........................................................... |
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4.6 |
Protection and failure mode................................................... |
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5. Basic Test Procedures....................................................................... |
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5.1 |
Defective Compressor........................................................... |
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5.2 SEALED REFRIGERATION SYSTEM REPAIRS.................. |
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5.3 FAN MOTOR.......................................................................... |
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5.4 CAPACITOR.......................................................................... |
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6. TROUBLESHOOTING GUIDE........................................................... |
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6.1 TROUBLESHOOTING GUIDE............................................. |
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6.2 Fault Codes.......................................................................... |
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6.3 TROUBLE SHOOTING........................................................ |
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7. WIRING DIAGRAM............................................................................ |
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Heat Controller, Inc. |
Portable Dehumidifier with R-410A |
BHD-G Service Manual |
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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.
1.1SAFETY PRECAUTIONS
1.When servicing the unit, set the POWER SWITCH to OFF and unplug the power cord.
2.Inspect the service cord for damage or wear.
If a short circuit is found, replace all parts which have been overheated or damaged by the short circuit.
3.After servicing the unit, conduct an insulation resistance test to protect the user from being exposed to electrical shock hazards.
1.2INSULATION RESISTANCE TEST
1.Unplug the power cord and connect a jumper lead between the two (2) live test pins.
2.The grounding conductor (yellow/green) should be open.
3.Measure the resistance value with an ohm meter between the jumped lead and each exposed metallic part on the unit at all the positions (except OFF) on the ROTARY SWITCH or POWER SWITCH.
4.The value should be over 1MΩ.
1.3UNIT FEATURES
•Auto-defrosting.
•Suitable for low-temperature and high-humidity weather.
•Water-full alarm and auto shutdown functions.
•Powerful dehumidification in wide temperature range between 41°F-90°F (5°C~32°C)
•LED display.
•Humidity display and setting.
•Self diagnose and defect display
1.4CONTROL LOCATIONS
Control pads:
When you push the button to change operation modes, the unit will make a beep sound to indicate that it is changing modes.
1.POWER
Press to turn the dehumidifier on and off.
2.CHECK FILTER
The check filter feature is a reminder to clean the Air Filter for more efficient operation. The LED light will illuminate after 250 hours of operation. To reset after cleaning the filter, press CHECK FILTER and the light will go off.
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BHD-G Service Manual |
Portable Dehumidifier with R-410A |
Heat Controller, Inc. |
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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
Use the (+) or (-) buttons to set the Auto start and Auto stop time from 0.0 to 24 hours.
4.Fan speed
Control the fan speed. By pressing either High or Normal fan speed. Set the fan control to High for maximum moisture removal. When the humidity has been reduced and quieter operation is preferred, set the fan control to Normal.
5. TIMER
Press to initiate the Auto start and Auto stop feature, in conjuction with the
and
keys.
6. Display
Shows the set % humidity level from 35% to 85% or auto start/stop time (0~24 hours) while setting, then shows the actual (+5% accuracy) room % humidity level in a range of 30%RH (Relative Humidity) to 90%RH(Relative humidity).
Error Codes:
AS- Humidity sensor error--Unplug the unit and plug it back in. If error repeats, call for service. ES- Temperature sensor error-- Unplug the unit and plug it back in. If error repeats, call for service.
P1- Unit is defrosting-- Allow the unit time to automatically defrost. The error will clear after the unit self defrosts.
P2- Bucket is full-- Empty the bucket and replace in the right position.
CO- Continuous dehumidifying mode is selected.
1.5 OUTSIDE DIMENSIONS
Model |
Width |
Height |
Depth |
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in. (mm) |
in. (mm) |
in. (mm) |
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BHD-301-G |
13.28” (340) |
19.88” (505) |
9.96” (253) |
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BHD-501-G |
15.47” (393) |
24.49” (622) |
12.64” (321) |
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BHD-651-G |
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Heat Controller, Inc. |
Portable Dehumidifier with R-410A |
BHD-G Service Manual |
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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
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8in (20cm) or |
8in (20cm) or more |
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more |
3.1 OPERATING CONDITIONS:
This unit is designed to operate in an environment between 41°F-90°F (5°C and |
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8in (20cm) or more |
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8in (20cm) or more |
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35°C). |
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If the unit has been switched off and needs to be switched on again quickly, allow approximately three minutes for the compressor to start up and for dehumidifaction to resume.
Do not connect the dehumidifier to a multiple socket outlet, which is also being used for other electrical appliances. Select a suitable location, making sure you have easy access to an electrical outlet.
Plug the unit into a 115V~60Hz electrical socket-outlet with a ground connection.
Make sure the Water Tank is correctly inserted otherwise the unit will not operate properly.
3.2TURNING THE UNIT “ON” OR “OFF”
3.2.1Plug the cord to the proper power recepticable. The unit’s program will run a self-check, if it is normal, the power indicator flashes (at 0.5Hz). Press Power button now, the unit will start operating under DEHUMIDIFYING mode with 60% setting humidity. Press the Humidity (+) or (-) button will change humidity setting.
3.2.2Press Continuous button to start the continous dehumidification mode. During this mode, the Humidity (+) or (-) button are disabled.
3.2.3Press the Power button to turn off the unit.(You do not need to unplug the power cord except when the unit will not be in use for a long period of time.)
3.3OPERATION WITH WATER TANK
Water will drain into the tank. When the tank is full, the unit stops operating, the water Full indicator light will flash. Do not remove the water tank while the machine is still working wait for the unit to completely stop to remove the bucket.
If not, some water may drip.
To empty the water tank, remove the tank as shown, empty the water and replace the tank back in the unit. Ensure components of water tank are correctly positioned.
The unit will re-start when the water tank is restored to its correct position.
1. Pull out the bucket a little.
2. Hold both sides of the |
3. Pour the water out |
bucket with even strength, |
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and pull it all the way out |
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from the unit. |
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BHD-G Service Manual |
Portable Dehumidifier with R-410A |
Heat Controller, Inc. |
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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.
3.5MAINTENANCE
3.5.1Precaution
Be sure to unplug the unit before cleaning.
Do not use harsh detergents, thinners or other chemical agents to clean the unit as this may damage the unit.
Do not wash the unit directly under a tap or hose. The electrical components inside may be damaged and the unit become unsafe as a result.
3.5.2 Air filter
Clean the air filter at least once every two weeks to prevent impaired performance of the unit.
Pull the air filter out and Wash the air filter with clean water, and then carefully dry (see figure below).
3.5.3 Unit enclosure
Use a soft, clean cloth to wipe the surface. Do not use water as this may cause an electrical fault or shock hazard.
3.5.4 Water tank
Wash the tank using warm water 104°F (about 40°C) with neutral detergent. Rinse and allow to air dry. Replace tank when dry.
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