Heat Controller BHD-301 Service Manual
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Heat Controller BHD-301 Service Manual

Heat Controller BHD-301 Service Manual

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HEAT CONTROLLER, INC.
MODELS: BHD-301
BHD-501
BHD-651
Service Manual
CAUTION
-Before servicing the unit, read the "safety precautions" in this manual.
-Only for authorized service personnel.
Dehumidifier

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Summary of Contents for Heat Controller BHD-301

  • Page 1 HEAT CONTROLLER, INC. Dehumidifier MODELS: BHD-301 BHD-501 BHD-651 Service Manual CAUTION -Before servicing the unit, read the "safety precautions" in this manual. -Only for authorized service personnel.

  • Page 2: Table Of Contents

    CONTENTS 1. PREFACE 1.1 SAFETY PRECAUTIONS ...........................3 1.2 FEATURES AND DIMENSIONS ........................3 1.2.1 FEATURES............................3 1.2.2 DIMENSIONS ............................3 1.3 SPECIFICATIONS ............................4 1.4 CONTROL TYPE ............................5 1.4.1 MECHANICAL TYPE.........................5 1.4.2 ELECTRONIC TYPE .........................5 1.5 HOW TO OPERATE DEHUMIDIFIER ......................6 1.5.1 HOW DOES THE DEHUMIDIFIER WORK? ..................6 1.5.2 LOCATION FOR THE DEHUMIDIFIER.....................6 1.5.3 MICRO SWITCH..........................6 1.5.4 AUTO DEFROST..........................6...

  • Page 3: Preface

    1. PREFACE This Service Manual provides various service information, including the mechanical and electrical parts. This dehumidifier was manufactured and assembled under the strict quality control procedures. The refrigerant is charged at the factory. Be sure to read the safety precaution prior to servicing the unit. 1.1 SAFETY PRECAUTIONS •...

  • Page 4: Specifications

    1.3 SPECIFICATIONS MODELS BHD-301 BHD-501 BHD-651 ITEMS CAPACITY(Pints/24hrs) POWER SUPPLY(Phase,V,Hz) 1Ø, 115V,60Hz INPUT(W) RUNNING CURRENT(A) ENERGY FACTOR(L/kw.h) 1.23 1.56 1.54 REFRIGERANT R134a REFRIGERANT CHARGE, oz(g) 5.29(150) 7.23(205) 8.82(250) THERMISTOR OPEN 33.8˚F(1±0.5°C) CLOSE 50˚F(10±0.5°C) SOLENOID VALVE Using Temp/Humid.:-4~122˚F(-20~50°C)/95%RH Rating:7W/90mA COMPRESSOR MODEL No.

  • Page 5: Control Type

    1.4 CONTROL TYPE 1.4.1 Mechanical type Humidity Control • When you first use the dehumidifier, turn the humidity control to 5 or 6. If you still have moisture, turn the humidity control to a higher setting. High MAX is the highest setting. •...

  • Page 6: How To Operate Dehumidifier

    1.5 HOW TO OPERATE DEHUMIDIFIER 1.5.1 HOW DOES THE DEHUMIDIFIER WORK? Motor Moist, humid air is drawn over a cold refrigerated Condenser Evaporator dehumidifying coil. Moisture in the air condenses on this coil and drains into a bucket (or through the bucket into a Humid Air Out hose and drain).

  • Page 7: Humidity Controller

    Press the Power button to stop the unit manually. Figure 7 1.5.6 DRYER (BHD-301) Dryer is used to prevent capillary blockage from moisture in the refrigerant system and H/E, condenser and evaporator. Also, dryer is used to remove corrosion of the components.

  • Page 8: Circuit Diagram

    2. CIRCUIT DIAGRAM • MODEL : BHD-301 PART NO. Q'TY DESCRIPTION PER SET MARKS BHD-301 6411A20001Z POWER CORD ASSEMBLY 6600FX5001G SWITCH, ROCKER 4681A20040J MOTOR ASSEMBLY 6748C-0003D PTC ASSEMBLY 2521C-A8626 RE-COMPRESSOR, SET 6750C-0009E 6871A20289B PWB(PCB) ASSEMBLY, DISPLAY 6877A30013L SENSOR ASSEMBLY 6601A30001B...
  • Page 9 • MODEL : BHD-501/BHD-651 PART NO. Q'TY DESCRIPTION PER SET MARKS BHD-501 BHD-651 6411A20001Z POWER CORD ASSEMBLY 4681A20040J 4681A20040K MOTOR ASSEMBLY CAPACITOR 0CZZA20001R 0CZZA20005J 2520UCAA014 2520UCBA007 COMPRESSOR, SET 6750U-L058A 6750U-L048A OLP. 6871A20460A PWB(PCB) ASSEMBLY, DISPLAY SENSOR ASSEMBLY 6877A30013L 6600A30003C SWITCH ASSEMBLY, MICRO 6871A10141C PWB(PCB) ASSEMBLY, MAIN COIL ASSEMBLY, SOLENOID...

  • Page 10: Disassembly Instructions

    3. DISASSEMBLY INSTRUCTIONS 3.1 MECHANICAL PARTS 3.1.1 BUCKET AND AIR FILTER 1. Turn the Humidity Control off(Mechanical type) or press the power button off. (Electronic type) 2. Disconnect the power supply. 3. Remove the bucket. (See Figure 9) 4. Pull out the air filter. (See Figure 10) Figure 9 Figure 10...

  • Page 11: Control Parts

    ASSEMBLY, MAIN and pull it out after unhooking from 2 rectangular holes of the control box (lower). (See Figure 17) 3.2.4 CAPACITOR (Except BHD-301) 1. Remove the screw that fastens the capacitor. (See Figure 17) Figure 17 2. Disconnect all leads from the capacitor and then remove it from control box.

  • Page 12: Coil Assembly, Solenoid

    ASSEMBLY, SOLENOID. (See Figure 19) 3. Pull it out upwards. Figure 19 3.2.7 CONTROL PANEL 3.2.6.1 CONTROL PANEL - Mechanical Type (BHD-301) 1. Disconnect housing and all leads of the rocker switch, SWITCH ASSEMBLY, ROTARY and PWB(PCB) ASSEMBLY, DISPLAY from PWB(PCB) ASSEMBLY, MAIN (3.1.3) 2.

  • Page 13: Fan And Motor

    3.2.8 FAN AND MOTOR 1. Turn the nut left and full out the Fan by hands carefully. 2. Remove 2 screws that fasten Heat Exchange. 3. Lift the H/E and open the H/E around 45 degree clockwise carefully. (See Figure 22) 4.

  • Page 14: Refrigerating Cycle

    (See Figure 28) Figure 28 3.3.2 PTC OR OVERLOAD PROTECTOR (OLP) FOR RECIPROCATING COMPRESSOR (BHD-301) 1. Discharge the refrigerant by using a refrigerant Recovery System. 2. After purging the unit completely, unbraze the suction and discharge tubes at the compressor connections.

  • Page 15: How To Replace Refrigeration System

    3.4 HOW TO REPLACE THE REFRIGERATION SYSTEM 1. When replacing a refrigeration component, be sure 7. Recharge as follows : to discharge the refrigerant system by using a 1) Refrigeration cycle systems are charged from the refrigerant recovery system. High-side. If the total charge cannot be put 2.
  • Page 16 Equipment needed: Vacuum pump, charging cylinder, manifold gauge, brazing equipment. pinch-off tool capable of making a vapor-proof seal, leak detector, tubing cutter, hand tools to remove components, service valve. EVAPORATOR ASSEMBLY (LOW PRESSURE SIDE) CONDENSER ASSEMBLY (HIGH PRESSURE SIDE) COMPOUND GAUGE MANIFOLD GAUGE CAPILLARY...

  • Page 17: Troubleshooting Guide

    4. TROUBLESHOOTING GUIDE CONDITION CAUSE REMEDY 1. Dehumidifier does not start. (Both No power Check power supply at outlet. compressor and fan motor do not Correct if none. operate.) Poor plug contact at outlet. Install plug properly or replace it. Bucket is full.
  • Page 18 CONDITION CAUSE REMEDY 5. Noisy operating If cracked, out of balance, or partially missing, replace it Loose foreign material inside the housing. Remove it. Tube hits frame. Adjust tubing routine carefully. Fan blade hits frame Check Motor Mount. If loose, tighten it. Internal compressor noise.

  • Page 19: Exploded Views

    5. EXPLODED VIEWS • MODEL: BHD-301 149980 268714 349600 554030 354210 359012 264110 249950 346811 435300 130900 162615 135312 266002 238310 149410 268712 436500 266003 352113 235512 152302 35211A 266011 552111 558511 752140 330870 130411 667482 144410 550140 554160 567502 148390 —19—...
  • Page 20 • MODEL: BHD-501 149980 W0CZZ 349600 554030 354210 359012 268714 346811 249950 435300 264110 130900 162615 135312 238310 268712 436500 552204 35211A 152302 266011 352113 752140 330870 567502 130401 554160 144410 148390 550140 —20—...
  • Page 21 • MODEL: BHD-651 149980 W0CZZ 349600 554030 354210 359012 268714 346811 249950 435300 264110 130900 162615 135312 238310 268712 436500 552204 35211A 152302 266011 352113 752140 330870 567502 130401 554160 144410 550140 148390 —21—...

  • Page 22: Replacement Parts List

    6. REPLACEMENT PARTS LIST • MODEL: BHD-301 PART NO. LOCATION REMARK DESCRIPTION BHD-301 130411 BASE ASSEMBLY 3041A10042C 130900 CABINET 3090A10042A 135312 FRONT GRILLE,ASSEMBLY 3531A10285D 330870 DRAIN PAN ASSEMBLY 3087A10019B 148390 TANK ASSEMBLY,BUCKET 4839A10002A 149410 KNOB ASSEMBLY 4941A30019B 152302 FILTER(MECH),AIR 5230A20040A...
  • Page 23 • MODEL: BHD-501 PART NO. LOCATION REMARK DESCRIPTION BHD-501 130411 BASE ASSEMBLY 3041A10042A 130900 CABINET 3090A10042A 135312 FRONT GRILLE,ASSEMBLY 3531A10254C 330870 DRAIN PAN ASSEMBLY 3087A10019A 148390 TANK ASSEMBLY,BUCKET 4839A10002A 152302 FILTER(MECH),AIR 5230A20040A 162615 SENSOR ASEMBLY 6877A30013L W0CZZ CAPACITOR 0CZZA20001R 249950 CONTROL BOX,ASSEMBLY 4995A20359E 264110...
  • Page 24 • MODEL: BHD-651 PART NO. LOCATION REMARK DESCRIPTION BHD-651 130411 BASE ASSEMBLY 3041A10042A 130900 CABINET 3090A10042A 135312 FRONT GRILLE,ASSEMBLY 3531A10254C 330870 DRAIN PAN ASSEMBLY 3087A10019A 148390 TANK ASSEMBLY,BUCKET 4839A10002A 152302 FILTER(MECH),AIR 5230A20040A 162615 SENSOR ASEMBLY 6877A30013L W0CZZ CAPACITOR 0CZZA20005J 249950 CONTROL BOX,ASSEMBLY 4995A20359L 264110...
  • Page 25 MEMO —25—...
  • Page 26 MEMO —26—...
  • Page 27 Specifications and performance data subject to change without notice. HEAT CONTROLLER, INC. 1900 WELLWORTH AVENUE • JACKSON, MICHIGAN 49203 THE QUALITY LEADER IN CONDITIONING AIR P/No.: 3828A31001C...

This manual is also suitable for:

Bhd-501Bhd-651Comfort-aire bhd-301Comfort-aire bhd-501Comfort-aire bhd-651

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